Citigroup Commercial Mortgage Trust 2017-B1

Commercial Mortgage Pass-Through Certificates, Series 2017-B1

STATEMENT TO NOTEHOLDERS

June 17, 2025


TRANSACTION PARTIES


Depositor:	Citigroup Commercial Mortgage Securities Inc.
Master Servicer:	Wells Fargo Bank, National Association
Certificate Administrator:	Citibank, N.A.
Special Servicer:	LNR Partners, LLC
Trustee / Custodian:	Deutsche Bank Trust Company Americas
Asset Representations Reviewer /
	BellOak, LLC
Operating Advisor:




	Danny Lee	Citibank, Agency and Trust
	(212) 816-4936	388 Greenwich Street Trading, 4th Floor
danny1.lee@citi.com		New York, NY 10013


TABLE OF CONTENTS


1	.	Distribution Summary	2
1.1	.	Summary	2
1.2	.	Factors	3
2	.	Distribution Detail	4
2.1	.	Interest Detail	4
2.2	.	Interest Shortfall Detail	5
2.3	.	Principal Detail	6
3	.	Reconciliation Detail	7
4	.	Other Information	8
5	.	Stratification Detail	9
6	.	Mortgage Loan Detail	14
7	.	NOI Detail	16
8	.	Delinquency Loan Detail	18
9	.	Collateral Performance Delinquency and Loan Status Detail	19
10	.	Appraisal Reduction Detail	20
11	.	Historical Appraisal Reduction Detail	21
12	.	Loan Modification Detail	24
13	.	Historical Loan Modification Detail	25
14	.	Specially Serviced Loan Detail	30
15	.	Historical Specially Serviced Loan Detail	31
16	.	Unscheduled Principal Detail	35
17	.	Historical Unscheduled Principal Detail	36
18	.	Liquidated Loan Detail	37
19	.	Historical Liquidated Loan Detail	38
20	.	CREFC Investor Reporting Package Legends	39
21	.	Notes	40


Reports Available at sf.citidirect.com	v. 21.09.28	Page 1 of 40	© Copyright 2025 Citigroup

Citigroup Commercial Mortgage Trust 2017-B1

Commercial Mortgage Pass-Through Certificates, Series 2017-B1

DISTRIBUTION SUMMARY

June 17, 2025


					Accrual		Other				Non-Cash
	Original	Prior	Pass-Through		Day	Interest	(As Interest)	Principal	Total	Realized Loss	Balance		Current
Class	Balance	Balance	Rate		Count	Distributed	Distributed	Distributed	Distributed	/(Recovery)	Change		Balance

A-1	21,308,000.00	-	2.008000	%	30/360	-	-	-	-	-	-		-
A-2	52,843,000.00	-	3.053000	%	30/360	-	-	-	-	-	-		-
A-3	245,000,000.00	234,879,287.66	3.197000	%	30/360	625,757.57	-	1,611,027.05	2,236,784.62	-	-		233,268,260.61
A-4	268,110,000.00	268,110,000.00	3.458000	%	30/360	772,603.65	-	-	772,603.65	-	-		268,110,000.00
A-AB	38,890,000.00	16,080,387.45	3.243000	%	30/360	43,457.25	-	1,223,296.11	1,266,753.36	-	-		14,857,091.34
A-S	89,450,000.00	89,450,000.00	3.711000	%	30/360	276,624.12	-	-	276,624.12	-	-		89,450,000.00
B	38,016,000.00	38,016,000.00	3.963000	%	30/360	125,547.84	-	-	125,547.84	-	-		38,016,000.00
C	36,899,000.00	36,899,000.00	4.240832	%	30/360	130,402.06	-	-	130,402.06	-	-		36,899,000.00
D	41,370,000.00	41,370,000.00	3.000000	%	30/360	103,425.00	-	-	103,425.00	-	-		41,370,000.00
E	21,245,000.00	21,245,000.00	3.300000	%	30/360	58,423.75	-	-	58,423.75	-	-		21,245,000.00
F	8,945,000.00	8,945,000.00	3.300000	%	30/360	24,598.75	-	-	24,598.75	-	-		8,945,000.00
G	8,945,000.00	8,945,000.00	3.300000	%	30/360	24,598.75	-	-	24,598.75	-	-		8,945,000.00
H	23,481,024.00	20,997,401.13	3.300000	%	30/360	13,074.40	-	-	13,074.40	147,981.12	-		20,849,420.01
R	-	-	0.000000	%	30/360	-	-	-	-	-	-		-
VRR	47,079,054.00	41,312,477.76	0.000000	%	30/360	143,648.44	-	149,174.90	292,823.34	7,788.48	-		41,155,514.38
Total	941,581,078.00	826,249,554.00				2,342,161.58	-	2,983,498.06	5,325,659.64	155,769.60	-		823,110,286.34
Notional
X-A	715,601,000.00	608,519,675.11	0.852066	%	30/360	432,082.36	-	-	432,082.36	-	(2,834,323.16	)	605,685,351.95
X-B	38,016,000.00	38,016,000.00	0.277832	%	30/360	8,801.73	-	-	8,801.73	-	-		38,016,000.00
X-D	41,370,000.00	41,370,000.00	1.240832	%	30/360	42,777.70	-	-	42,777.70	-	-		41,370,000.00
X-E	21,245,000.00	21,245,000.00	0.940832	%	30/360	16,656.65	-	-	16,656.65	-	-		21,245,000.00
X-F	17,890,000.00	17,890,000.00	0.940832	%	30/360	14,026.24	-	-	14,026.24	-	-		17,890,000.00
X-H	23,481,024.00	20,997,401.13	0.940832	%	30/360	16,462.53	-	-	16,462.53	-	(147,981.12	)	20,849,420.01
Total	857,603,024.00	748,038,076.24				530,807.21	-	-	530,807.21	-	(2,982,304.28	)	745,055,771.96

Grand Total	1,799,184,102.00	1,574,287,630.24				2,872,968.79	-	2,983,498.06	5,856,466.85	155,769.60	(2,982,304.28	)	1,568,166,058.30


Reports Available at sf.citidirect.com	v. 21.09.28	Page 2 of 40	© Copyright 2025 Citigroup

Citigroup Commercial Mortgage Trust 2017-B1

Commercial Mortgage Pass-Through Certificates, Series 2017-B1

DISTRIBUTION SUMMARY - FACTORS

June 17, 2025


					Other				Non-Cash
			Record	Interest	(As Interest)	Principal	Total	Realized Loss	Balance	Current
Class	CUSIP		Date	Distributed	Distributed	Distributed	Distributed	/(Recovery)	Change	Balance

A-1	17326	CAW4	05/30/2025	-	-	-	-	-	-	-
A-2	17326	CAX2	05/30/2025	-	-	-	-	-	-	-
A-3	17326	CAY0	05/30/2025	2.55411253	-	6.57562061	9.12973314	-	-	952.11534943
A-4	17326	CAZ7	05/30/2025	2.88166667	-	-	2.88166667	-	-	1,000.00000000
A-AB	17326	CBA1	05/30/2025	1.11744022	-	31.45528696	32.57272718	-	-	382.02857650
A-S	17326	CBB9	05/30/2025	3.09249994	-	-	3.09249994	-	-	1,000.00000000
X-A	17326	CBE3	05/30/2025	0.60380346	-	-	0.60380346	-	-	846.40093006
X-B	17326	CBF0	05/30/2025	0.23152699	-	-	0.23152699	-	-	1,000.00000000
X-D	17326CAJ3 U1740GAE4 17326CAK0		05/30/2025	1.03402707	-	-	1.03402707	-	-	1,000.00000000
X-E	17326CAL8 U1740GAF1 17326CAM6		05/30/2025	0.78402683	-	-	0.78402683	-	-	1,000.00000000
X-F	17326CAN4 U1740GAG9 17326CAP9		05/30/2025	0.78402683	-	-	0.78402683	-	-	1,000.00000000
X-H	17326CBK9 U1740GAM6 17326CBL7		05/30/2025	0.70109932	-	-	0.70109932	-	-	887.92635321
B	17326	CBC7	05/30/2025	3.30250000	-	-	3.30250000	-	-	1,000.00000000
C	17326	CBD5	05/30/2025	3.53402694	-	-	3.53402694	-	-	1,000.00000000
D	17326CAA2 U1740GAA2 17326CAB0		05/30/2025	2.50000000	-	-	2.50000000	-	-	1,000.00000000
E	17326CAC8 U1740GAB0 17326CAD6		05/30/2025	2.75000000	-	-	2.75000000	-	-	1,000.00000000
F	17326CAE4 U1740GAC8 17326CAF1		05/30/2025	2.75000000	-	-	2.75000000	-	-	1,000.00000000
G	17326CAG9 U1740GAD6 17326CAH7		05/30/2025	2.75000000	-	-	2.75000000	-	-	1,000.00000000
H	17326CBG8 U1740GAL8 17326CBH6		05/30/2025	0.55680706	-	-	0.55680706	6.30215786	-	887.92635321
R	17326	CAU8	05/30/2025	-	-	-	-	-	-	-
VRR	17326	CAT1	05/30/2025	3.05121764	-	3.16860445	6.21982209	0.16543408	-	874.17887326


Reports Available at sf.citidirect.com	v. 21.09.28	Page 3 of 40	© Copyright 2025 Citigroup

Citigroup Commercial Mortgage Trust 2017-B1

Commercial Mortgage Pass-Through Certificates, Series 2017-B1

DISTRIBUTION INFORMATION - INTEREST DETAIL

June 17, 2025


			Rate					Interest			Shortfall				Paid
															Cap
							Accrual	Net	Accreted	Non	Carry	Cap Carryover			Carryover
Class	Uncapped Capped				Next		Dates	Accrued	/Deferred	Recovered	Forward	/Basis Risk	Accrued	Carry Forward /Basis Risk		Total

A-1	2.00800	%	2.00800	%	2.00800	%	05/01-05/31	-	-	-	-	-	-	-	-	-
A-2	3.05300	%	3.05300	%	3.05300	%	05/01-05/31	-	-	-	-	-	-	-	-	-
A-3	3.19700	%	3.19700	%	3.19700	%	05/01-05/31	625,757.57	-	-	-	-	625,757.57	-	-	625,757.57
A-4	3.45800	%	3.45800	%	3.45800	%	05/01-05/31	772,603.65	-	-	-	-	772,603.65	-	-	772,603.65
A-AB	3.24300	%	3.24300	%	3.24300	%	05/01-05/31	43,457.25	-	-	-	-	43,457.25	-	-	43,457.25
A-S	3.71100	%	3.71100	%	3.71100	%	05/01-05/31	276,624.12	-	-	-	-	276,624.12	-	-	276,624.12
B	3.96300	%	3.96300	%	3.96300	%	05/01-05/31	125,547.84	-	-	-	-	125,547.84	-	-	125,547.84
C	4.31828	%	4.24083	%	4.24083	%	05/01-05/31	130,402.06	-	-	-	-	130,402.06	-	-	130,402.06
D	3.00000	%	3.00000	%	3.00000	%	05/01-05/31	103,425.00	-	-	-	-	103,425.00	-	-	103,425.00
E	3.30000	%	3.30000	%	3.30000	%	05/01-05/31	58,423.75	-	-	-	-	58,423.75	-	-	58,423.75
F	3.30000	%	3.30000	%	3.30000	%	05/01-05/31	24,598.75	-	-	-	-	24,598.75	-	-	24,598.75
G	3.30000	%	3.30000	%	3.30000	%	05/01-05/31	24,598.75	-	-	-	-	24,598.75	-	-	24,598.75
H	3.30000	%	3.30000	%	3.30000	%	05/01-05/31	57,742.85	-	-	49,675.47	-	13,074.40	-	-	13,074.40
R	0.00000	%	0.00000	%	0.00000	%	05/01-05/31	-	-	-	-	-	-	-	-	-
VRR	0.00000	%	0.00000	%	0.00000	%	05/01-05/31	143,648.44	-	-	-	-	143,648.44	-	-	143,648.44
Total								2,386,830.03	-	-	49,675.47	-	2,342,161.58	-	-	2,342,161.58
Notional
X-A	1.00278	%	0.85207	%	0.85207	%	05/01-05/31	432,082.36	-	-	-	-	432,082.36	-	-	432,082.36
X-B	0.35528	%	0.27783	%	0.27783	%	05/01-05/31	8,801.73	-	-	-	-	8,801.73	-	-	8,801.73
X-D	1.31828	%	1.24083	%	1.24083	%	05/01-05/31	42,777.70	-	-	-	-	42,777.70	-	-	42,777.70
X-E	1.01828	%	0.94083	%	0.94083	%	05/01-05/31	16,656.65	-	-	-	-	16,656.65	-	-	16,656.65
X-F	1.01828	%	0.94083	%	0.94083	%	05/01-05/31	14,026.24	-	-	-	-	14,026.24	-	-	14,026.24
X-H	1.01828	%	0.94083	%	0.94083	%	05/01-05/31	16,462.53	-	-	-	-	16,462.53	-	-	16,462.53
Total								530,807.21	-	-	-	-	530,807.21	-	-	530,807.21

Grand Total								2,917,637.24	-	-	49,675.47	-	2,872,968.79	-	-	2,872,968.79


Reports Available at sf.citidirect.com	v. 21.09.28	Page 4 of 40	© Copyright 2025 Citigroup

Citigroup Commercial Mortgage Trust 2017-B1

Commercial Mortgage Pass-Through Certificates, Series 2017-B1

DISTRIBUTION INFORMATION - INTEREST SHORTFALL DETAIL

June 17, 2025


											Cap Carryover /
	Non-Recov Shortfall				Carry Forward Interest					Basis Risk Shortfall
			Other
Class	PPIS	SSRA	Shortfall	Prior	Int. on Prior	New	Paid	Outstanding	Prior	Int. on Prior	New	Paid	Outstanding

A-1	-	-	-	-	-	-	-	-	-	-	-	-	-
A-2	-	-	-	-	-	-	-	-	-	-	-	-	-
A-3	-	-	-	-	-	-	-	-	-	-	-	-	-
A-4	-	-	-	-	-	-	-	-	-	-	-	-	-
A-AB	-	-	-	-	-	-	-	-	-	-	-	-	-
A-S	-	-	-	-	-	-	-	-	-	-	-	-	-
B	-	-	-	-	-	-	-	-	-	-	-	-	-
C	-	-	-	-	-	-	-	-	-	-	-	-	-
D	-	-	-	-	-	-	-	-	-	-	-	-	-
E	-	-	-	-	-	-	-	-	-	-	-	-	-
F	-	-	-	-	-	-	-	-	-	-	-	-	-
G	-	-	-	-	-	-	-	-	-	-	-	-	-
H	-	-	-	1,820,733.22	5,007.02	44,668.45	-	1,870,408.69	-	-	-	-	-
R	-	-	-	-	-	-	-	-	-	-	-	-	-
VRR	-	-	-	-	-	-	-	-	-	-	-	-	-
Total	-	-	-	1,820,733.22	5,007.02	44,668.45	-	1,870,408.69	-	-	-	-	-
Notional
X-A	-	-	-	-	-	-	-	-	-	-	-	-	-
X-B	-	-	-	-	-	-	-	-	-	-	-	-	-
X-D	-	-	-	-	-	-	-	-	-	-	-	-	-
X-E	-	-	-	-	-	-	-	-	-	-	-	-	-
X-F	-	-	-	-	-	-	-	-	-	-	-	-	-
X-H	-	-	-	-	-	-	-	-	-	-	-	-	-
Total	-	-	-	-	-	-	-	-	-	-	-	-	-

Grand Total	-	-	-	1,820,733.22	5,007.02	44,668.45	-	1,870,408.69	-	-	-	-	-


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Citigroup Commercial Mortgage Trust 2017-B1

Commercial Mortgage Pass-Through Certificates, Series 2017-B1

DISTRIBUTION INFORMATION - PRINCIPAL DETAIL

June 17, 2025


					Non-Cash		Cumulative
	Prior	Principal	Accreted	Realized Loss	Balance	Current	Realized	Class %		Class %		Sub %		Sub %
Class	Balance	Distributed	Principal	/(Recovery)	Change	Balance	Loss	Original		Current		Original		Current

A-1	-	-	-	-	-	-	-	2.26	%	0.00	%	30.00	%	33.98	%
A-2	-	-	-	-	-	-	-	5.61	%	0.00	%	30.00	%	33.98	%
A-3	234,879,287.66	1,611,027.05	-	-	-	233,268,260.61	-	26.02	%	28.34	%	30.00	%	33.98	%
A-4	268,110,000.00	-	-	-	-	268,110,000.00	-	28.47	%	32.57	%	30.00	%	33.98	%
A-AB	16,080,387.45	1,223,296.11	-	-	-	14,857,091.34	-	4.13	%	1.80	%	30.00	%	33.98	%
A-S	89,450,000.00	-	-	-	-	89,450,000.00	-	9.50	%	10.87	%	20.00	%	22.54	%
B	38,016,000.00	-	-	-	-	38,016,000.00	-	4.04	%	4.62	%	15.75	%	17.68	%
C	36,899,000.00	-	-	-	-	36,899,000.00	-	3.92	%	4.48	%	11.63	%	12.96	%
D	41,370,000.00	-	-	-	-	41,370,000.00	-	4.39	%	5.03	%	7.00	%	7.67	%
E	21,245,000.00	-	-	-	-	21,245,000.00	-	2.26	%	2.58	%	4.63	%	4.95	%
F	8,945,000.00	-	-	-	-	8,945,000.00	-	0.95	%	1.09	%	3.63	%	3.81	%
G	8,945,000.00	-	-	-	-	8,945,000.00	-	0.95	%	1.09	%	2.62	%	2.67	%
H	20,997,401.13	-	-	147,981.12	-	20,849,420.01	2,631,603.99	2.49	%	2.53	%	0.00	%	0.00	%
R	-	-	-	-	-	-	-	0.00	%	0.00	%	0.00	%	0.00	%
VRR	41,312,477.76	149,174.90	-	7,788.48	-	41,155,514.38	138,505.47	5.00	%	5.00	%	0.00	%	0.00	%

Total	826,249,554.00	2,983,498.06	-	155,769.60	-	823,110,286.34	2,770,109.46	99.99	%	100.00	%


Reports Available at sf.citidirect.com	v. 21.09.28	Page 6 of 40	© Copyright 2025 Citigroup

Citigroup Commercial Mortgage Trust 2017-B1

Commercial Mortgage Pass-Through Certificates, Series 2017-B1

RECONCILIATION DETAIL

June 17, 2025


SOURCE OF FUNDS			ALLOCATION OF FUNDS

Interest Funds Available			Scheduled Fees
Scheduled Interest	2,893,315.70		Servicing Fee	4,384.52
Prepayment Interest Shortfall	-		Trustee/Certificate Administrator Fee	4,695.85
Interest Adjustments	-		Operating Advisor Fee	768.46
ASER Amount	-		Asset Representations Reviewer Ongoing Fee	165.41
Realized Loss in Excess of Principal Balance	-		CREFC Intellectual Property Royalty License Fee	355.73
Total Interest Funds Available		2,893,315.70	Total Scheduled Fees		10,369.97
Principal Funds Available			Additional Fees, Expenses, etc.
Scheduled Principal	607,498.51		Additional Servicing Fee	-
Curtailments	-		Special Servicing Fee	7,000.00
Unscheduled Principal Collections	2,531,769.15		Work-out Fee	2,976.94
Net Liquidation Proceeds	-		Liquidation Fee	-
Repurchased Principal	-		Trust Fund Expenses	-
Substitution Principal	-		Trust Advisor Expenses	-
Other Principal	-		Reimbursement of Nonrecoverable Advances To the Servicer	155,769.60
			Reimbursement of Interest on Advances to the Servicer	-
Total Principal Funds Available		3,139,267.66
			Borrower Reimbursable Trust Fund Expenses	-
Other Funds Available
			Other Expenses	-
Yield Maintenance Charges	-
Withdrawal of Withheld Amounts from the Interest Reserve			Total Additional Fees, Expenses, etc.		165,746.54
Account	-
			Distributions
Deposit of Withheld Amounts to the Interest Reserve Account	-
			Interest Distribution	2,872,968.79
Total Other Funds Available		-	Principal Distribution	2,983,498.06
			Yield Maintenance Charge Distribution	-
			Total Distributions		5,856,466.85




Total Funds Available		6,032,583.36
			Total Funds Allocated		6,032,583.36


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Citigroup Commercial Mortgage Trust 2017-B1

Commercial Mortgage Pass-Through Certificates, Series 2017-B1

OTHER INFORMATION

Interest Reserve Account Information

June 17, 2025


Beginning Interest Reserve Account Balance	0.00
Deposit of Withheld Amounts to the Interest Reserve Account	0.00
Withdrawal of Withheld Amounts from the Interest Reserve Account	0.00
Ending Interest Reserve Account Balance	0.00
Excess Liquidation Proceeds Reserve Account Information
Beginning Excess Liquidation Proceeds Reserve Account Balance	0.00
Deposit to the Excess Liquidation Proceeds Reserve Account	0.00
Withdrawal from the Excess Liquidation Proceeds Reserve Account	0.00
Ending Excess Liquidation Proceeds Reserve Account Balance	0.00
ARD Mortgage Loan Information
Excess Interest	0.00
Collateral Information
% of Cut-Off Principal Balance Outstanding	87.417887	%
Controlling Class Information
The Controlling Class is Class H.
The Controlling Class Representative is Investin Pro RED Holdings, LLC
There Are No Disclosable Special Servicer Fees.


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Citigroup Commercial Mortgage Trust 2017-B1

Commercial Mortgage Pass-Through Certificates, Series 2017-B1

STRATIFICATION DETAIL

June 17, 2025


Anticipated Remaining Term

Anticipated Remaining	Asset	Ending Scheduled	% of			Wtd Avg
Term Range	Count	Balance	Agg.Bal. WAC		WAM	DSCR

60 Months or Less	48	823,110,286.37	100.00	4.1179	25	2.081011
61 to 90 Months	0	0.00	0.00	0.0000	0	0.000000
91 Months or Greater	0	0.00	0.00	0.0000	0	0.000000
Total	48	823,110,286.37	100.00	4.1179	25	2.081011

Debt Service Coverage Ratio

Debt Service Coverage	Asset	Ending Scheduled	% of			Wtd Avg
Ratio Range	Count	Balance	Agg.Bal. WAC		WAM	DSCR

1.250 or Less	7	143,237,356.29	17.40	3.7639	25	0.314005
1.251 to 1.500	9	95,460,933.81	11.60	4.4675	22	1.341150
1.501 to 1.750	5	71,180,705.95	8.65	4.6429	26	1.600369
1.751 to 2.000	3	56,725,519.57	6.89	4.4105	25	1.778224
2.001 to 2.250	6	121,671,954.01	14.78	4.1326	25	2.077960
2.251 to 2.500	7	103,529,007.98	12.58	4.2010	25	2.380804
2.501 to 2.750	2	32,030,619.79	3.89	4.1894	25	2.640972
2.751 to 3.000	2	44,500,000.00	5.41	3.9297	25	2.893371
3.001 to 3.250	1	6,525,000.00	0.79	4.4050	26	3.203100
3.251 to 3.500	0	0.00	0.00	0.0000	0	0.000000
3.501 to 3.750	3	35,292,188.97	4.29	4.4138	26	3.647304
3.751 to 4.000	1	40,000,000.00	4.86	3.9400	25	3.764400
4.001 or Greater	2	72,957,000.00	8.86	3.4852	25	4.279985
Total	48	823,110,286.37	100.00	4.1179	25	2.081011


Reports Available at sf.citidirect.com	v. 21.09.28	Page 9 of 40	© Copyright 2025 Citigroup

Citigroup Commercial Mortgage Trust 2017-B1

Commercial Mortgage Pass-Through Certificates, Series 2017-B1

STRATIFICATION DETAIL

June 17, 2025


Ending Schedule Balance

Ending Schedule Balance	Asset	Ending Scheduled	% of			Wtd Avg
Range	Count	Balance	Agg.Bal. WAC WAM			DSCR

1 to 5,000,000	6	22,275,999.49	2.71	4.6740	25	1.672622
10,000,001 to 15,000,000	4	52,631,796.96	6.39	4.1696	24	1.411317
15,000,001 to 20,000,000	2	30,700,000.00	3.73	3.3795	25	-0.660290
20,000,001 to 25,000,000	9	201,327,548.33	24.46	4.0658	24	2.597744
25,000,001 to 30,000,000	2	59,919,170.76	7.28	4.5448	26	2.236722
30,000,001 to 35,000,000	0	0.00	0.00	0.0000	0	0.000000
35,000,001 to 40,000,000	2	77,500,000.00	9.42	3.6932	25	1.942916
40,000,001 to 45,000,000	1	41,700,000.00	5.07	4.3200	26	1.756900
45,000,001 to 50,000,000	1	47,103,035.06	5.72	4.6300	26	1.574800
5,000,001 to 10,000,000	17	127,185,825.59	15.45	4.5028	25	2.030196
50,000,001 to 55,000,000	2	103,766,910.18	12.61	3.7747	25	2.770685
55,000,001 to 60,000,000	1	59,000,000.00	7.17	3.7700	26	2.048800
60,000,001 to 65,000,000	0	0.00	0.00	0.0000	0	0.000000
65,000,001 to 70,000,000	0	0.00	0.00	0.0000	0	0.000000
70,000,001 to 75,000,000	0	0.00	0.00	0.0000	0	0.000000
75,000,001 to 80,000,000	0	0.00	0.00	0.0000	0	0.000000
80,000,001 to 85,000,000	0	0.00	0.00	0.0000	0	0.000000
85,000,000+	0	0.00	0.00	0.0000	0	0.000000
Total	48	823,110,286.37	100.00	4.1179	25	2.081011


Reports Available at sf.citidirect.com	v. 21.09.28	Page 10 of 40	© Copyright 2025 Citigroup

Citigroup Commercial Mortgage Trust 2017-B1

Commercial Mortgage Pass-Through Certificates, Series 2017-B1

STRATIFICATION DETAIL

June 17, 2025


Loan Rate

	Asset	Ending Scheduled	% of			Wtd Avg
Loan Rate Range	Count	Balance	Agg.Bal. WAC WAM			DSCR

4.00 or Less	12	312,157,000.00	37.92	3.6095	25	2.272520
4.01 to 4.25	7	143,787,340.65	17.47	4.1444	23	1.743148
4.26 to 4.50	13	175,635,145.98	21.34	4.3666	25	2.405144
4.51 to 4.75	9	149,626,546.08	18.18	4.6455	25	1.832058
4.76 to 5.00	6	37,883,032.49	4.60	4.8640	24	1.348089
5.01 to 5.25	1	4,021,221.17	0.49	5.1100	25	1.306600
5.26 to 5.50	0	0.00	0.00	0.0000	0	0.000000
5.51 to 5.75	0	0.00	0.00	0.0000	0	0.000000
5.76 to 6.00	0	0.00	0.00	0.0000	0	0.000000
6.01 to 6.25	0	0.00	0.00	0.0000	0	0.000000
6.26 to 6.50	0	0.00	0.00	0.0000	0	0.000000
6.51 to 6.75	0	0.00	0.00	0.0000	0	0.000000
6.76 to 7.00	0	0.00	0.00	0.0000	0	0.000000
7.01 or Greater	0	0.00	0.00	0.0000	0	0.000000
Total	48	823,110,286.37	100.00	4.1179	25	2.081011

Property Type

	Asset	Ending Scheduled	% of			Wtd Avg
Property Type Range	Count	Balance	Agg.Bal. WAC WAM			DSCR

Industrial	0	0.00	0.00	0.0000	0	0.000000
Lodging	4	107,221,379.76	13.03	4.6232	26	2.229344
Mixed Use	7	161,808,119.79	19.66	3.7885	25	3.114069
Multifamily	3	71,371,713.66	8.67	4.2864	25	2.115004
Office	8	123,818,641.65	15.04	4.2450	25	1.018972
Other	5	78,200,000.00	9.50	3.4958	25	0.314758
Retail	11	183,885,614.99	22.34	4.1395	24	2.016810
Self Storage	9	90,962,451.47	11.05	4.2425	25	3.127048
Total	48	823,110,286.37	100.00	4.1179	25	2.081011


Reports Available at sf.citidirect.com	v. 21.09.28	Page 11 of 40	© Copyright 2025 Citigroup

Citigroup Commercial Mortgage Trust 2017-B1

Commercial Mortgage Pass-Through Certificates, Series 2017-B1

STRATIFICATION DETAIL

June 17, 2025


Remaining Amortization Term

Remaining Amortization	Asset	Ending Scheduled	% of			Wtd Avg
Term Range	Count	Balance	Agg.Bal.	WAC	WAM	DSCR

240 Months or Less	23	517,279,293.78	62.84	3.8764	25	2.250855
241 to 270 Months	25	305,830,992.59	37.16	4.5263	25	1.793740
271 to 300 Months	0	0.00	0.00	0.0000	0	0.000000
301 Months or Greater	0	0.00	0.00	0.0000	0	0.000000
Total	48	823,110,286.37	100.00	4.1179	25	2.081011

Seasoning

	Asset	Ending Scheduled	% of			Wtd Avg
Seasoning Range	Count	Balance	Agg.Bal.	WAC	WAM	DSCR

12 Months or Less	0	0.00	0.00	0.0000	0	0.000000
13 to 24 Months	0	0.00	0.00	0.0000	0	0.000000
25 to 36 Months	0	0.00	0.00	0.0000	0	0.000000
37 to 48 Months	0	0.00	0.00	0.0000	0	0.000000
49 Months or Greater	48	823,110,286.37	100.00	4.1179	25	2.081011
Total	48	823,110,286.37	100.00	4.1179	25	2.081011


Reports Available at sf.citidirect.com	v. 21.09.28	Page 12 of 40	© Copyright 2025 Citigroup

Citigroup Commercial Mortgage Trust 2017-B1

Commercial Mortgage Pass-Through Certificates, Series 2017-B1

STRATIFICATION DETAIL

June 17, 2025


State

	Asset	Ending Scheduled	% of			Wtd Avg
State Range	Count	Balance	Agg.Bal. WAC WAM			DSCR

Alabama	0	0.00	0.00	0.0000	0	0.000000
Arizona	0	0.00	0.00	0.0000	0	0.000000
California	3	75,688,597.31	9.20	4.3790	25	2.283995
Florida	4	31,605,000.00	3.84	4.2439	25	3.108452
Georgia	0	0.00	0.00	0.0000	0	0.000000
Illinois	3	15,993,747.06	1.94	4.8536	25	1.082622
Indiana	1	4,692,746.14	0.57	4.7900	25	1.346600
Kansas	1	13,172,832.49	1.60	4.8500	22	1.408000
Kentucky	0	0.00	0.00	0.0000	0	0.000000
Maryland	0	0.00	0.00	0.0000	0	0.000000
Michigan	1	21,599,609.36	2.62	4.5900	26	1.374900
N/A	3	67,700,000.00	8.22	3.4300	25	0.000000
Nevada	1	9,508,119.79	1.16	4.2591	25	2.524600
New Jersey	0	0.00	0.00	0.0000	0	0.000000
New York	11	234,434,913.60	28.48	3.9353	25	2.400059
North Carolina	0	0.00	0.00	0.0000	0	0.000000
Ohio	1	7,149,213.66	0.87	4.4890	25	2.392000
Pennsylvania	1	23,000,000.00	2.79	4.0510	25	2.852400
Texas	5	54,760,779.25	6.65	4.3823	25	2.115205
Various	0	0.00	0.00	0.0000	0	0.000000
Total	48	823,110,286.37	100.00	4.1179	25	2.081011


Reports Available at sf.citidirect.com	v. 21.09.28	Page 13 of 40	© Copyright 2025 Citigroup

Citigroup Commercial Mortgage Trust 2017-B1

Commercial Mortgage Pass-Through Certificates, Series 2017-B1

MORTGAGE LOAN DETAIL

June 17, 2025


			Prop			Paid					Beginning	Ending		Payment Workout Mod
			Type			Through	Gross		Interest	Principal	Scheduled	Scheduled	Maturity	Status		Strategy Code
Loan ID	OMCR		(1)	City	State	Date	Coupon		Payment	Payment	Balance	Balance	Date	(2	)	(3	)	(4	)

304101882	1		MU	New York	NY	06/09/2025	3.43000	%	73,840.28	-	25,000,000.00	25,000,000.00	06/09/2027	0		0		0
304101843	10		RT	New York	NY	06/06/2025	4.36600	%	112,788.33	-	30,000,000.00	30,000,000.00	08/06/2027	0		0		0
1749262	11		OF	Troy	MI	06/01/2025	4.59000	%	85,542.84	43,108.95	21,642,718.31	21,599,609.36	08/01/2027	0		0		0
1647690	12		RT	Various	XX	06/01/2025	4.19000	%	88,528.15	-	24,536,250.00	24,536,250.00	11/01/2026	0		0		0
1749833	13		LO	Lafayette	LA	06/01/2025	4.42000	%	78,994.56	42,475.65	20,754,664.62	20,712,188.97	08/01/2027	0		0		8
300801642	14		MU	Lahaska	PA	06/01/2025	4.05100	%	80,232.31	-	23,000,000.00	23,000,000.00	07/01/2027	0		0		0
1749778	15		MF	Dallas	TX	06/01/2025	4.16000	%	80,680.60	-	22,522,500.00	22,522,500.00	07/01/2027	0		0		0
304101831	16		MU	Corona	NY	06/06/2025	4.36000	%	82,597.78	-	22,000,000.00	22,000,000.00	07/06/2027	0		0		0
300801633	17		MU	New Rochelle	NY	06/01/2025	3.80000	%	70,352.78	-	21,500,000.00	21,500,000.00	07/01/2027	0		0		0
308511018	18		RT	Torrance	CA	06/01/2025	3.65750	%	64,429.61	-	20,457,000.00	20,457,000.00	06/01/2027	0		0		0
304101851	19		OF	New York	NY	06/06/2025	3.33000	%	44,446.25	-	15,500,000.00	15,500,000.00	08/06/2027	0		0		0
304101891	1	A	N/A			06/09/2025	3.43000	%	44,304.17	-	15,000,000.00	15,000,000.00	06/09/2027	0		0		0
453011619	1	B	N/A			06/09/2025	3.43000	%	44,894.89	-	15,200,000.00	15,200,000.00	06/09/2027	0		0		0
453011576	1	C	N/A			06/09/2025	3.43000	%	110,760.42	-	37,500,000.00	37,500,000.00	06/09/2027	0		0		0
1749343	2		RT	Metairie	LA	06/01/2025	3.77000	%	191,536.94	-	59,000,000.00	59,000,000.00	08/01/2027	0		0		0
300801632	20		OF	Wichita	KS	06/01/2025	4.85000	%	55,120.75	25,352.25	13,198,184.74	13,172,832.49	04/01/2027	0		0		0
304101858	21		SS	Various	XX	06/06/2025	4.51000	%	54,299.76	22,806.75	13,981,771.22	13,958,964.47	08/06/2027	0		0		0
1749084	22		RT	Plano	TX	06/01/2025	4.64000	%	31,787.17	40,318.10	7,955,632.89	7,915,314.79	08/01/2027	0		0		0
1648607	24		LO	El Paso	TX	06/01/2025	4.71500	%	38,593.81	18,555.57	9,505,540.54	9,486,984.97	08/01/2027	0		8		8
1749362	25		OF	Houston	TX	06/01/2025	4.25000	%	34,098.15	19,695.48	9,317,140.37	9,297,444.89	07/01/2027	0		0		0
304101839	26		N/A	Maitland	FL	06/06/2025	3.92000	%	35,443.33	-	10,500,000.00	10,500,000.00	07/06/2027	0		0		0
1647637	27		OF	Rochester	NY	05/01/2025	4.28000	%	30,649.74	2,557,635.02	8,316,178.80	5,758,543.78	08/01/2027	B		11		0
203041833	29		MU	Reno	NV	06/06/2025	4.25906	%	34,923.79	14,323.25	9,522,443.04	9,508,119.79	07/06/2027	0		0		0
1749761	3		OF	Milwaukee	WI	06/01/2025	4.14000	%	183,087.45	90,018.46	51,356,928.64	51,266,910.18	07/01/2027	0		0		0
304101859	30		RT	Chicago	IL	01/06/2020	4.91000	%	-	-	8,770,446.11	8,770,446.11	08/06/2027	3		2		0
304101862	31		RT	Ka'anapali	HI	06/06/2025	4.08000	%	28,891.61	14,491.89	8,223,417.77	8,208,925.88	08/06/2027	0		0		0
308511032	32		RT	Hercules	CA	06/06/2025	4.74000	%	33,223.25	11,065.55	8,139,627.80	8,128,562.25	08/06/2027	0		0		0
1749956	33		MU	Brooklyn	NY	06/01/2025	4.40000	%	31,447.78	-	8,300,000.00	8,300,000.00	08/01/2027	0		0		0
300801641	34		MF	Marysville	OH	06/01/2025	4.48900	%	27,681.06	11,789.43	7,161,003.09	7,149,213.66	07/01/2027	0		0		0
300801651	35		SS	Miami Gardens	FL	06/01/2025	4.40500	%	29,321.39	-	7,730,000.00	7,730,000.00	08/01/2027	0		0		0
300801648	36		SS	Hialeah	FL	06/01/2025	4.40500	%	25,983.38	-	6,850,000.00	6,850,000.00	08/01/2027	0		0		0
300801649	37		SS	Hialeah	FL	06/01/2025	4.40500	%	24,750.59	-	6,525,000.00	6,525,000.00	08/01/2027	0		0		0


Reports Available at sf.citidirect.com	v. 21.09.28	Page 14 of 40	© Copyright 2025 Citigroup

Citigroup Commercial Mortgage Trust 2017-B1

Commercial Mortgage Pass-Through Certificates, Series 2017-B1

MORTGAGE LOAN DETAIL

June 17, 2025


		Prop			Paid					Beginning	Ending		Payment Workout Mod
		Type			Through	Gross		Interest	Principal	Scheduled	Scheduled	Maturity	Status Strategy Code
Loan ID	OMCR	(1)	City	State	Date	Coupon		Payment	Payment	Balance	Balance	Date	(2	)	(3	)	(4	)

1749521	38	RT	Saugerties	NY	07/01/2025	4.73000	%	24,375.29	8,152.37	5,984,522.19	5,976,369.82	08/01/2027	0		0		0
304101856	39	RT	Brooklyn	NY	06/06/2025	4.45000	%	23,758.06	-	6,200,000.00	6,200,000.00	08/06/2027	0		0		0
304101861	4	LO	San Diego	CA	06/06/2025	4.63000	%	188,233.59	109,460.02	47,212,495.08	47,103,035.06	08/06/2027	0		8		8
300801659	40	MH	Brookings	OR	06/01/2025	4.92000	%	24,784.62	7,663.90	5,850,028.95	5,842,365.05	08/01/2027	0		0		0
304101838	41	SS	Balch Springs	TX	06/06/2025	4.57000	%	21,831.09	8,998.89	5,547,533.49	5,538,534.60	07/06/2027	0		0		0
300801640	42	SS	Castle Rock	CO	06/01/2025	4.23500	%	18,104.42	9,149.53	4,964,459.23	4,955,309.70	07/01/2027	0		0		0
1749567	43	RT	Goshen	IN	06/01/2025	4.79000	%	19,388.70	7,862.48	4,700,608.62	4,692,746.14	07/01/2027	0		0		0
1749823	45	OF	Barrington	IL	06/01/2025	5.11000	%	17,727.11	7,412.74	4,028,633.91	4,021,221.17	07/01/2027	0		0		0
300801653	46	SS	Shreveport	LA	06/01/2025	4.77300	%	15,532.18	6,304.51	3,779,043.33	3,772,738.82	08/01/2027	0		0		0
300801652	47	OF	Skokie	IL	06/01/2025	4.37700	%	12,090.53	5,738.17	3,207,817.95	3,202,079.78	08/01/2027	0		0		0
300801650	48	SS	Baton Rouge	LA	06/01/2025	4.95300	%	6,971.46	2,639.69	1,634,543.57	1,631,903.88	08/01/2027	0		0		0
300801657	5	MU	Bronx	NY	06/01/2025	3.41800	%	154,522.08	-	52,500,000.00	52,500,000.00	08/01/2027	0		0		0
304101849	7	MF	New York	NY	06/06/2025	4.32000	%	155,124.00	-	41,700,000.00	41,700,000.00	08/06/2027	0		0		0
308511008	8	SS	Various	XX	06/06/2025	3.94000	%	135,711.11	-	40,000,000.00	40,000,000.00	07/06/2027	0		0		0
300801656	9	LO	Various	XX	06/01/2025	4.72400	%	121,928.54	54,249.01	29,973,419.77	29,919,170.76	08/01/2027	0		0		0
Total	Count = 47							2,893,315.70	3,139,267.66	826,249,554.03	823,110,286.37


Reports Available at sf.citidirect.com	v. 21.09.28	Page 15 of 40	© Copyright 2025 Citigroup

Citigroup Commercial Mortgage Trust 2017-B1

Commercial Mortgage Pass-Through Certificates, Series 2017-B1

NOI DETAIL

June 17, 2025


			Property			Ending	Preceding	Most		Most Recent	Most Recent
			Type			Scheduled	Fiscal	Recent		Financial As of	Financial Asof
Loan ID	OMCR		(1)	City	State	Balance	Year NOI	NOI		Start Date	End Date

304101882	1		MU	New York	NY	25,000,000.00	191,484,942.44	47,339,159.48		01/01/2025	03/31/2025
304101843	10		RT	New York	NY	30,000,000.00	2,630,482.76	689,184.09		01/01/2025	03/31/2025
1749262	11		OF	Troy	MI	21,599,609.36	2,567,090.69	667,633.21		01/01/2025	03/31/2025
1647690	12		RT	Various	XX	24,536,250.00	1,850,786.91	1,253,813.91		Not Available	Not Available
1749833	13		LO	Lafayette	LA	20,712,188.97	5,070,580.52	5,955,013.26		04/01/2024	03/31/2025
300801642	14		MU	Lahaska	PA	23,000,000.00	2,737,569.02	2,152,719.40		Not Available	Not Available
1749778	15		MF	Dallas	TX	22,522,500.00	2,288,834.10	652,121.44		01/01/2025	03/31/2025
304101831	16		MU	Corona	NY	22,000,000.00	2,194,721.64	605,808.22		01/01/2025	03/31/2025
300801633	17		MU	New Rochelle	NY	21,500,000.00	4,278,138.28	684,012.00		01/01/2025	03/31/2025
308511018	18		RT	Torrance	CA	20,457,000.00	59,746,222.00	44,097,365.00		Not Available	Not Available
304101851	19		OF	New York	NY	15,500,000.00	646,698.51	(119,489.48	)	Not Available	Not Available
304101891	1	A	N/A			15,000,000.00	-	-		Not Available	Not Available
453011619	1	B	N/A			15,200,000.00	-	-		Not Available	Not Available
453011576	1	C	N/A			37,500,000.00	-	-		Not Available	Not Available
1749343	2		RT	Metairie	LA	59,000,000.00	17,197,853.81	11,430,273.74		Not Available	Not Available
300801632	20		OF	Wichita	KS	13,172,832.49	1,230,397.39	1,088,531.98		Not Available	Not Available
304101858	21		SS	Various	XX	13,958,964.47	2,060,726.75	520,724.32		01/01/2025	03/31/2025
1749084	22		RT	Plano	TX	7,915,314.79	1,272,584.00	966,211.00		Not Available	Not Available
1648607	24		LO	El Paso	TX	9,486,984.97	1,542,528.17	1,542,938.40		04/01/2024	03/31/2025
1749362	25		OF	Houston	TX	9,297,444.89	1,119,548.00	274,845.50		01/01/2025	03/31/2025
304101839	26		N/A	Maitland	FL	10,500,000.00	955,436.00	241,224.00		01/01/2025	03/31/2025
1647637	27		OF	Rochester	NY	5,758,543.78	1,635,663.00	1,585,836.00		01/01/2025	03/31/2025
203041833	29		MU	Reno	NV	9,508,119.79	12,679,152.27	3,217,102.97		01/01/2025	03/31/2025
1749761	3		OF	Milwaukee	WI	51,266,910.18	8,154,416.17	6,381,643.54		Not Available	Not Available
304101859	30		RT	Chicago	IL	8,770,446.11	384,123.00	84,600.00		Not Available	Not Available
304101862	31		RT	Ka'anapali	HI	8,208,925.88	1,079,315.57	632,460.36		Not Available	Not Available
308511032	32		RT	Hercules	CA	8,128,562.25	904,708.00	688,321.70		Not Available	Not Available
1749956	33		MU	Brooklyn	NY	8,300,000.00	571,362.05	417,244.05		Not Available	Not Available
300801641	34		MF	Marysville	OH	7,149,213.66	1,150,008.63	291,532.89		01/01/2025	03/31/2025
300801651	35		SS	Miami Gardens	FL	7,730,000.00	1,260,155.50	312,319.11		01/01/2025	03/31/2025
300801648	36		SS	Hialeah	FL	6,850,000.00	1,036,491.34	274,477.41		01/01/2025	03/31/2025
300801649	37		SS	Hialeah	FL	6,525,000.00	933,953.42	232,165.43		01/01/2025	03/31/2025
Reports Available at sf.citidirect.com			v. 21.09.28			Page 16 of 40				© Copyright 2025 Citigroup

Citigroup Commercial Mortgage Trust 2017-B1

Commercial Mortgage Pass-Through Certificates, Series 2017-B1

NOI DETAIL

June 17, 2025


		Property			Ending	Preceding	Most	Most Recent	Most Recent
		Type			Scheduled	Fiscal	Recent	Financial As of	Financial Asof
Loan ID	OMCR	(1)	City	State	Balance	Year NOI	NOI	Start Date	End Date

1749521	38	RT	Saugerties	NY	5,976,369.82	712,467.00	531,853.00	Not Available	Not Available
304101856	39	RT	Brooklyn	NY	6,200,000.00	513,664.01	330,075.00	Not Available	Not Available
304101861	4	LO	San Diego	CA	47,103,035.06	6,907,263.48	6,388,654.33	04/01/2024	03/31/2025
300801659	40	MH	Brookings	OR	5,842,365.05	792,245.45	654,255.59	Not Available	Not Available
304101838	41	SS	Balch Springs	TX	5,538,534.60	688,898.78	542,533.41	Not Available	Not Available
300801640	42	SS	Castle Rock	CO	4,955,309.70	697,896.91	332,335.03	01/01/2024	06/30/2024
1749567	43	RT	Goshen	IN	4,692,746.14	510,271.03	355,424.06	Not Available	Not Available
1749823	45	OF	Barrington	IL	4,021,221.17	447,957.17	333,685.93	Not Available	Not Available
300801653	46	SS	Shreveport	LA	3,772,738.82	466,900.54	226,954.97	Not Available	Not Available
300801652	47	OF	Skokie	IL	3,202,079.78	637,004.41	137,364.84	01/01/2025	03/31/2025
300801650	48	SS	Baton Rouge	LA	1,631,903.88	151,113.47	78,499.57	Not Available	Not Available
300801657	5	MU	Bronx	NY	52,500,000.00	7,293,705.89	6,249,415.73	Not Available	Not Available
304101849	7	MF	New York	NY	41,700,000.00	3,266,504.36	2,432,316.04	Not Available	Not Available
308511008	8	SS	Various	XX	40,000,000.00	12,038,684.58	9,164,193.56	Not Available	Not Available
300801656	9	LO	Various	XX	29,919,170.76	5,670,092.00	5,709,788.00	04/01/2024	03/31/2025
Total	Count = 47				823,110,286.37	371,459,159.02	167,627,141.99


Reports Available at sf.citidirect.com	v. 21.09.28	Page 17 of 40	© Copyright 2025 Citigroup

Citigroup Commercial Mortgage Trust 2017-B1

Commercial Mortgage Pass-Through Certificates, Series 2017-B1

DELINQUENCY LOAN DETAIL

June 17, 2025

Actual

Paid

Current P&I

Total P&I

Cumulative

Other Expense

Payment Workout

Most Recent

Principal

Through

Advances

Accrued Unpaid

Advances

Status

Strategy

Special Serv

Foreclosure

Bankruptcy

REO

Loan ID

OMCR

Balance

Date

(Net of ASER)

Outstanding

Interest Advances

Outstanding

)

Transfer Date

Date

1647637

5,784,409.65

05/01/2025

56,515.61

56,479.80

20,873.59

09/20/2021

304101859

9,401,987.23

01/06/2020

510,198.98

01/21/2020

Total

Count = 2

15,186,396.88

56,515.61

56,479.80

531,072.57


Reports Available at sf.citidirect.com	v. 21.09.28	Page 18 of 40	© Copyright 2025 Citigroup

Citigroup Commercial Mortgage Trust 2017-B1

Commercial Mortgage Pass-Through Certificates, Series 2017-B1

COLLATERAL PERFORMANCE - DELINQUENCY AND LOAN STATUS DETAIL

–

June 17, 2025


							Delinquent
					(Does not include loans in Bankruptcy, Foreclosure, or REO)

			30	Day			60	Day			90	Day	120			+ Day	Bankruptcy				Foreclosure						REO

Distribution

Date	Count		Balance		Count		Balance		Count		Balance		Count		Balance		Count		Balance		Count		Balance		Count			Balance


	0		0		0		0		0		0		1		8,770,446		0		0		0		0		0			0
06/17/2025
	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%	2.1	%	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%		0.0	%

	0		0		0		0		0		0		1		8,770,446		0		0		0		0		0			0
05/16/2025
	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%	2.1	%	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%		0.0	%

	0		0		1		8,342,938		0		0		1		8,770,446		0		0		0		0		0			0
04/17/2025
	0.0	%	0.0	%	2.1	%	0.0	%	0.0	%	0.0	%	2.1	%	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%		0.0	%

	1		8,368,611		0		0		0		0		1		8,770,446		0		0		0		0		0			0
03/17/2025
	2.1	%	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%	2.1	%	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%		0.0	%

	0		0		0		0		0		0		1		8,770,446		0		0		0		0		0			0
02/18/2025
	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%	2.1	%	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%		0.0	%

	0		0		0		0		0		0		1		8,770,446		0		0		0		0		0			0
01/17/2025
	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%	2.1	%	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%		0.0	%

	0		0		0		0		0		0		1		8,770,446		0		0		0		0		0			0
12/17/2024
	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%	2.1	%	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%		0.0	%

	0		0		0		0		0		0		1		8,770,446		0		0		0		0		0			0
11/18/2024
	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%	2.1	%	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%		0.0	%

	0		0		0		0		0		0		1		8,770,446		0		0		0		0		0			0
10/18/2024
	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%	2.1	%	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%		0.0	%

	0		0		0		0		0		0		1		8,770,446		0		0		0		0		0			0
09/17/2024
	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%	2.1	%	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%		0.0	%

	0		0		0		0		0		0		1		8,770,446		0		0		0		0		0			0
08/16/2024
	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%	2.1	%	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%		0.0	%

	0		0		0		0		0		0		1		8,770,446		0		0		0		0		0			0
07/17/2024
	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%	2.1	%	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%		0.0	%


Reports Available at sf.citidirect.com	v. 21.09.28	Page 19 of 40	© Copyright 2025 Citigroup

Citigroup Commercial Mortgage Trust 2017-B1

Commercial Mortgage Pass-Through Certificates, Series 2017-B1

APPRAISAL REDUCTION DETAIL

June 17, 2025


			Beginning	Ending	Appraisal	Appraisal	Most Recent	Cumulative
Loan ID	OMCR	Property Name	Scheduled Balance	Scheduled Balance	Reduction Amount	Reduction Date	ASER Amount	ASER Amount

1647637	27	Clinton Crossings Medical Office	8,316,178.80	5,758,543.78	-	11/12/2024	-	-
304101859	30	4901 West Irving Park	8,770,446.11	8,770,446.11	7,228,068.59	02/11/2025	-	571,999.49
Total	Count = 2		17,086,624.91	14,528,989.89	7,228,068.59		-	571,999.49


Reports Available at sf.citidirect.com	v. 21.09.28	Page 20 of 40	© Copyright 2025 Citigroup

Citigroup Commercial Mortgage Trust 2017-B1

Commercial Mortgage Pass-Through Certificates, Series 2017-B1

HISTORICAL APPRAISAL REDUCTION DETAIL

June 17, 2025


Distribution				Beginning	Ending	Appraisal	Appraisal	Most Recent	Cumulative
Date	Loan ID	OMCR	Property Name	Scheduled Balance Scheduled Balance Reduction Amount Reduction Date				ASER Amount	ASER Amount

6/17/2025	1647637	27	Clinton Crossings Medical Office	8,316,178.80	5,758,543.78	-	11/12/2024	-	-
6/17/2025	304101859	30	4901 West Irving Park	8,770,446.11	8,770,446.11	7,228,068.59	02/11/2025	-	571,999.49
5/16/2025	1647637	27	Clinton Crossings Medical Office	8,342,937.93	8,316,178.80	-	11/12/2024	-	-
5/16/2025	304101859	30	4901 West Irving Park	8,770,446.11	8,770,446.11	7,228,068.59	02/11/2025	-	571,999.49
4/17/2025	1647637	27	Clinton Crossings Medical Office	8,368,610.56	8,342,937.93	-	11/12/2024	-	-
4/17/2025	304101859	30	4901 West Irving Park	8,770,446.11	8,770,446.11	7,228,068.59	02/11/2025	-	571,999.49
3/17/2025	1647637	27	Clinton Crossings Medical Office	8,397,172.91	8,368,610.56	-	11/12/2024	-	-
3/17/2025	304101859	30	4901 West Irving Park	8,770,446.11	8,770,446.11	7,228,068.59	02/11/2025	-	571,999.49
2/18/2025	1647637	27	Clinton Crossings Medical Office	8,422,646.39	8,397,172.91	-	11/12/2024	-	-
2/18/2025	304101859	30	4901 West Irving Park	8,770,446.11	8,770,446.11	7,228,068.59	02/11/2025	-	571,999.49
1/17/2025	304101859	30	4901 West Irving Park	8,770,446.11	8,770,446.11	6,077,655.10	02/12/2024	-	571,999.49
12/17/2024	304101859	30	4901 West Irving Park	8,770,446.11	8,770,446.11	6,077,655.10	02/12/2024	-	571,999.49
11/18/2024	304101859	30	4901 West Irving Park	8,770,446.11	8,770,446.11	6,077,655.10	02/12/2024	-	571,999.49
10/18/2024	304101859	30	4901 West Irving Park	8,770,446.11	8,770,446.11	6,077,655.10	02/12/2024	-	571,999.49
9/17/2024	304101859	30	4901 West Irving Park	8,770,446.11	8,770,446.11	6,077,655.10	02/12/2024	-	571,999.49
8/16/2024	304101859	30	4901 West Irving Park	8,770,446.11	8,770,446.11	6,077,655.10	02/12/2024	-	571,999.49
7/17/2024	304101859	30	4901 West Irving Park	8,770,446.11	8,770,446.11	6,077,655.10	02/12/2024	-	571,999.49
6/17/2024	304101859	30	4901 West Irving Park	8,770,446.11	8,770,446.11	6,077,655.10	02/12/2024	-	571,999.49
5/17/2024	1647637	27	Clinton Crossings Medical Office	8,651,745.34	8,626,087.62	-	12/11/2023	-	-
5/17/2024	304101859	30	4901 West Irving Park	8,770,446.11	8,770,446.11	6,077,655.10	02/12/2024	-	571,999.49
4/17/2024	1647637	27	Clinton Crossings Medical Office	8,676,284.02	8,651,745.34	-	12/11/2023	-	-
4/17/2024	304101859	30	4901 West Irving Park	8,770,446.11	8,770,446.11	6,077,655.10	02/12/2024	-	571,999.49
3/15/2024	304101859	30	4901 West Irving Park	8,770,446.11	8,770,446.11	6,077,655.10	02/12/2024	-	571,999.49
2/16/2024	304101859	30	4901 West Irving Park	8,770,446.11	8,770,446.11	6,077,655.10	02/12/2024	-	571,999.49
1/18/2024	304101859	30	4901 West Irving Park	8,770,446.11	8,770,446.11	4,876,065.98	02/13/2023	-	571,999.49
12/15/2023	304101859	30	4901 West Irving Park	8,770,446.11	8,770,446.11	4,876,065.98	02/13/2023	-	571,999.49
11/17/2023	304101859	30	4901 West Irving Park	8,770,446.11	8,770,446.11	4,876,065.98	02/13/2023	-	571,999.49
10/17/2023	304101859	30	4901 West Irving Park	8,786,300.63	8,770,446.11	4,876,065.98	02/13/2023	19,930.92	571,999.49
9/15/2023	304101859	30	4901 West Irving Park	8,800,895.09	8,786,300.63	4,876,065.98	02/13/2023	20,595.28	552,068.57
8/17/2023	304101859	30	4901 West Irving Park	8,815,428.10	8,800,895.09	4,876,065.98	02/13/2023	20,595.28	531,473.29
7/17/2023	304101859	30	4901 West Irving Park	8,831,099.32	8,815,428.10	4,876,065.98	02/13/2023	19,930.92	510,878.01
6/16/2023	304101859	30	4901 West Irving Park	8,845,505.16	8,831,099.32	4,876,065.98	02/13/2023	20,595.29	490,947.09
5/17/2023	304101859	30	4901 West Irving Park	8,861,053.81	8,845,505.16	4,876,065.98	02/13/2023	19,930.92	470,351.80


Reports Available at sf.citidirect.com	v. 21.09.28	Page 21 of 40	© Copyright 2025 Citigroup

Citigroup Commercial Mortgage Trust 2017-B1

Commercial Mortgage Pass-Through Certificates, Series 2017-B1

HISTORICAL APPRAISAL REDUCTION DETAIL

June 17, 2025


Distribution				Beginning	Ending	Appraisal	Appraisal	Most Recent		Cumulative
Date	Loan ID	OMCR	Property Name	Scheduled Balance Scheduled Balance Reduction Amount Reduction Date				ASER Amount		ASER Amount

4/17/2023	1647637	27	Clinton Crossings Medical Office	8,969,923.99	8,946,467.53	-	12/12/2022	-		-
4/17/2023	304101859	30	4901 West Irving Park	8,875,333.54	8,861,053.81	4,876,065.98	02/13/2023	20,595.28		450,420.88
3/17/2023	304101859	30	4901 West Irving Park	8,893,176.62	8,875,333.54	4,876,065.98	02/13/2023	18,602.19		429,825.60
2/17/2023	304101859	30	4901 West Irving Park	8,907,321.10	8,893,176.62	4,876,065.98	02/13/2023	20,595.29		411,223.41
1/18/2023	304101859	30	4901 West Irving Park	8,921,406.03	8,907,321.10	3,964,600.49	02/11/2022	16,745.48		390,628.12
12/16/2022	304101859	30	4901 West Irving Park	8,936,645.39	8,921,406.03	3,964,600.49	02/11/2022	16,205.30		373,882.64
11/18/2022	304101859	30	4901 West Irving Park	8,950,606.86	8,936,645.39	3,964,600.49	02/11/2022	16,745.48		357,677.34
10/17/2022	304101859	30	4901 West Irving Park	8,965,727.22	8,950,606.86	3,964,600.49	02/11/2022	16,205.30		340,931.86
9/16/2022	304101859	30	4901 West Irving Park	8,979,566.25	8,965,727.22	3,964,600.49	02/11/2022	16,745.48		324,726.56
8/17/2022	304101859	30	4901 West Irving Park	8,993,347.01	8,979,566.25	3,964,600.49	02/11/2022	16,745.48		307,981.08
7/15/2022	304101859	30	4901 West Irving Park	9,008,293.21	8,993,347.01	3,964,600.49	02/11/2022	16,205.31		291,235.60
6/17/2022	304101859	30	4901 West Irving Park	9,021,953.02	9,008,293.21	3,964,600.49	02/11/2022	16,745.48		275,030.29
5/17/2022	304101859	30	4901 West Irving Park	9,036,782.65	9,021,953.02	3,964,600.49	02/11/2022	16,205.30		258,284.81
4/15/2022	304101859	30	4901 West Irving Park	9,050,322.51	9,036,782.65	3,964,600.49	02/11/2022	16,745.48		242,079.51
3/17/2022	304101859	30	4901 West Irving Park	9,067,499.87	9,050,322.51	3,964,600.49	02/11/2022	15,124.95		225,334.03
2/17/2022	304101859	30	4901 West Irving Park	9,080,910.41	9,067,499.87	3,964,600.49	02/11/2022	16,745.48		210,209.08
1/18/2022	304101859	30	4901 West Irving Park	9,094,264.48	9,080,910.41	2,716,535.50	03/11/2021	11,473.97		193,463.60
12/17/2021	304101859	30	4901 West Irving Park	9,108,799.44	9,094,264.48	2,716,535.50	03/11/2021	11,103.84		181,989.63
11/18/2021	304101859	30	4901 West Irving Park	9,122,036.09	9,108,799.44	2,716,535.50	03/11/2021	11,473.97		170,885.79
10/18/2021	304101859	30	4901 West Irving Park	9,136,457.88	9,122,036.09	2,716,535.50	03/11/2021	11,103.84		159,411.82
9/17/2021	304101859	30	4901 West Irving Park	9,149,578.09	9,136,457.88	2,716,535.50	03/11/2021	11,473.97		148,307.98
8/17/2021	304101859	30	4901 West Irving Park	9,162,643.06	9,149,578.09	2,716,535.50	03/11/2021	11,473.97		136,834.01
7/16/2021	304101859	30	4901 West Irving Park	9,176,899.38	9,162,643.06	2,716,535.50	03/11/2021	11,103.84		125,360.04
6/17/2021	304101859	30	4901 West Irving Park	9,189,849.32	9,176,899.38	2,716,535.50	03/11/2021	11,473.97		114,256.20
5/17/2021	304101859	30	4901 West Irving Park	9,203,994.77	9,189,849.32	2,716,535.50	03/11/2021	11,103.84		102,782.23
5/17/2021	304101861	4	Old Town San Diego Hotel Portfolio	52,238,198.79	52,142,057.56	-		(152,355.24	)	-
4/16/2021	304101859	30	4901 West Irving Park	9,216,830.63	9,203,994.77	2,716,535.50	03/11/2021	11,473.97		91,678.39
4/16/2021	304101861	4	Old Town San Diego Hotel Portfolio	52,327,266.50	52,238,198.79	13,176,669.56	12/11/2020	-		152,355.24
3/17/2021	1648607	24	Hotel Indigo El Paso	10,395,520.76	10,376,494.06	-		(10,601.99	)	-
3/17/2021	304101859	30	4901 West Irving Park	9,233,374.53	9,216,830.63	2,716,535.50	03/11/2021	10,363.58		80,204.42
3/17/2021	304101861	4	Old Town San Diego Hotel Portfolio	52,436,131.77	52,327,266.50	13,176,669.56	12/11/2020	47,399.41		152,355.24
2/18/2021	1648607	24	Hotel Indigo El Paso	10,410,402.46	10,395,520.76	-	12/11/2020	-		10,601.99
2/18/2021	304101859	30	4901 West Irving Park	9,246,086.69	9,233,374.53	1,675,140.96	04/13/2020	7,075.38		69,840.84


Reports Available at sf.citidirect.com	v. 21.09.28	Page 22 of 40	© Copyright 2025 Citigroup

Citigroup Commercial Mortgage Trust 2017-B1

Commercial Mortgage Pass-Through Certificates, Series 2017-B1

HISTORICAL APPRAISAL REDUCTION DETAIL

June 17, 2025


Distribution				Beginning	Ending	Appraisal	Appraisal	Most Recent	Cumulative
Date	Loan ID	OMCR	Property Name	Scheduled Balance Scheduled Balance Reduction Amount Reduction Date				ASER Amount	ASER Amount

2/18/2021	304101861	4	Old Town San Diego Hotel Portfolio	52,524,413.46	52,436,131.77	13,176,669.56	12/11/2020	52,477.92	104,955.83
1/15/2021	1648607	24	Hotel Indigo El Paso	10,425,223.98	10,410,402.46	-	12/11/2020	-	10,601.99
1/15/2021	304101859	30	4901 West Irving Park	9,258,745.33	9,246,086.69	1,675,140.96	04/13/2020	7,075.38	62,765.46
1/15/2021	304101861	4	Old Town San Diego Hotel Portfolio	52,612,344.58	52,524,413.46	13,176,669.56	12/11/2020	52,477.91	52,477.91
12/17/2020	1648607	24	Hotel Indigo El Paso	10,441,347.57	10,425,223.98	-	12/11/2020	-	10,601.99
12/17/2020	304101859	30	4901 West Irving Park	9,272,610.03	9,258,745.33	1,675,140.96	04/13/2020	6,847.14	55,690.08
12/17/2020	304101861	4	Old Town San Diego Hotel Portfolio	52,706,678.26	52,612,344.58	13,176,669.56	12/11/2020	-	-
11/18/2020	1648607	24	Hotel Indigo El Paso	10,456,043.96	10,441,347.57	2,614,010.99	11/12/2020	10,601.99	10,601.99
11/18/2020	304101859	30	4901 West Irving Park	9,285,157.00	9,272,610.03	1,675,140.96	04/13/2020	7,075.38	48,842.94
10/19/2020	304101859	30	4901 West Irving Park	9,298,914.07	9,285,157.00	1,675,140.96	04/13/2020	6,847.14	41,767.56
9/17/2020	304101859	30	4901 West Irving Park	9,311,350.29	9,298,914.07	1,675,140.96	04/13/2020	7,075.38	34,920.42
8/17/2020	304101859	30	4901 West Irving Park	9,323,734.15	9,311,350.29	1,675,140.96	04/13/2020	7,075.38	27,845.04
7/17/2020	304101859	30	4901 West Irving Park	9,337,334.02	9,323,734.15	1,675,140.96	04/13/2020	6,847.14	20,769.66
6/17/2020	304101859	30	4901 West Irving Park	9,349,608.49	9,337,334.02	1,675,140.96	04/13/2020	7,075.38	13,922.52
5/15/2020	304101859	30	4901 West Irving Park	9,363,102.92	9,349,608.49	1,675,140.96	04/13/2020	6,847.14	6,847.14
4/17/2020	304101859	30	4901 West Irving Park	9,375,268.89	9,363,102.92	1,675,140.96	04/13/2020	-	-


Reports Available at sf.citidirect.com	v. 21.09.28	Page 23 of 40	© Copyright 2025 Citigroup

Citigroup Commercial Mortgage Trust 2017-B1

Commercial Mortgage Pass-Through Certificates, Series 2017-B1

LOAN MODIFICATION DETAIL

June 17, 2025


				Modification	Modification
Loan ID		OMCR	Property Name	Date	Code (4)

1749833		13	DoubleTree Lafayette	04/01/2020	8
1648607		24	Hotel Indigo El Paso	07/01/2020	8
304101861		4	Old Town San Diego Hotel Portfolio	06/01/2020	8
Total	Count = 3


Reports Available at sf.citidirect.com	v. 21.09.28	Page 24 of 40	© Copyright 2025 Citigroup

Citigroup Commercial Mortgage Trust 2017-B1

Commercial Mortgage Pass-Through Certificates, Series 2017-B1

HISTORICAL LOAN MODIFICATION DETAIL

June 17, 2025


Distribution				Modification	Modification
Date	Loan ID	OMCR	Property Name	Date	Code (4)

06/17/2025	1749833	13	DoubleTree Lafayette	04/01/2020	8
06/17/2025	1648607	24	Hotel Indigo El Paso	07/01/2020	8
06/17/2025	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
05/16/2025	1749833	13	DoubleTree Lafayette	04/01/2020	8
05/16/2025	1648607	24	Hotel Indigo El Paso	07/01/2020	8
05/16/2025	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
04/17/2025	1749833	13	DoubleTree Lafayette	04/01/2020	8
04/17/2025	1648607	24	Hotel Indigo El Paso	07/01/2020	8
04/17/2025	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
03/17/2025	1749833	13	DoubleTree Lafayette	04/01/2020	8
03/17/2025	1648607	24	Hotel Indigo El Paso	07/01/2020	8
03/17/2025	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
02/18/2025	1749833	13	DoubleTree Lafayette	04/01/2020	8
02/18/2025	1648607	24	Hotel Indigo El Paso	07/01/2020	8
02/18/2025	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
01/17/2025	1749833	13	DoubleTree Lafayette	04/01/2020	8
01/17/2025	1648607	24	Hotel Indigo El Paso	07/01/2020	8
01/17/2025	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
12/17/2024	1749833	13	DoubleTree Lafayette	04/01/2020	8
12/17/2024	1648607	24	Hotel Indigo El Paso	07/01/2020	8
12/17/2024	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
11/18/2024	1749833	13	DoubleTree Lafayette	04/01/2020	8
11/18/2024	1648607	24	Hotel Indigo El Paso	07/01/2020	8
11/18/2024	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
10/18/2024	1749833	13	DoubleTree Lafayette	04/01/2020	8
10/18/2024	1648607	24	Hotel Indigo El Paso	07/01/2020	8
10/18/2024	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
09/17/2024	1749833	13	DoubleTree Lafayette	04/01/2020	8
09/17/2024	1648607	24	Hotel Indigo El Paso	07/01/2020	8
09/17/2024	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
08/16/2024	1749833	13	DoubleTree Lafayette	04/01/2020	8
08/16/2024	1648607	24	Hotel Indigo El Paso	07/01/2020	8


08/16/2024	304101861		4 Old Town San Diego Hotel Portfolio	06/01/2020	8
Reports Available at sf.citidirect.com		v. 21.09.28	Page 25 of 40		© Copyright 2025 Citigroup

Citigroup Commercial Mortgage Trust 2017-B1

Commercial Mortgage Pass-Through Certificates, Series 2017-B1

HISTORICAL LOAN MODIFICATION DETAIL

June 17, 2025


Distribution				Modification	Modification
Date	Loan ID	OMCR	Property Name	Date	Code (4)

07/17/2024	1749833	13	DoubleTree Lafayette	04/01/2020	8
07/17/2024	1648607	24	Hotel Indigo El Paso	07/01/2020	8
07/17/2024	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
06/17/2024	1749833	13	DoubleTree Lafayette	04/01/2020	8
06/17/2024	1648607	24	Hotel Indigo El Paso	07/01/2020	8
06/17/2024	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
05/17/2024	1749833	13	DoubleTree Lafayette	04/01/2020	8
05/17/2024	1648607	24	Hotel Indigo El Paso	07/01/2020	8
05/17/2024	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
04/17/2024	1749833	13	DoubleTree Lafayette	04/01/2020	8
04/17/2024	1648607	24	Hotel Indigo El Paso	07/01/2020	8
04/17/2024	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
03/15/2024	1749833	13	DoubleTree Lafayette	04/01/2020	8
03/15/2024	1648607	24	Hotel Indigo El Paso	07/01/2020	8
03/15/2024	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
02/16/2024	1749833	13	DoubleTree Lafayette	04/01/2020	8
02/16/2024	1648607	24	Hotel Indigo El Paso	07/01/2020	8
02/16/2024	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
01/18/2024	1749833	13	DoubleTree Lafayette	04/01/2020	8
01/18/2024	1648607	24	Hotel Indigo El Paso	07/01/2020	8
01/18/2024	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
12/15/2023	1749833	13	DoubleTree Lafayette	04/01/2020	8
12/15/2023	1648607	24	Hotel Indigo El Paso	07/01/2020	8
12/15/2023	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
11/17/2023	1749833	13	DoubleTree Lafayette	04/01/2020	8
11/17/2023	1648607	24	Hotel Indigo El Paso	07/01/2020	8
11/17/2023	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
10/17/2023	1749833	13	DoubleTree Lafayette	04/01/2020	8
10/17/2023	1648607	24	Hotel Indigo El Paso	07/01/2020	8
10/17/2023	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
09/15/2023	1749833	13	DoubleTree Lafayette	04/01/2020	8
09/15/2023	1648607	24	Hotel Indigo El Paso	07/01/2020	8
09/15/2023	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8


Reports Available at sf.citidirect.com	v. 21.09.28	Page 26 of 40	© Copyright 2025 Citigroup

Citigroup Commercial Mortgage Trust 2017-B1

Commercial Mortgage Pass-Through Certificates, Series 2017-B1

HISTORICAL LOAN MODIFICATION DETAIL

June 17, 2025


Distribution				Modification	Modification
Date	Loan ID	OMCR	Property Name	Date	Code (4)

08/17/2023	1749833	13	DoubleTree Lafayette	04/01/2020	8
08/17/2023	1648607	24	Hotel Indigo El Paso	07/01/2020	8
08/17/2023	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
07/17/2023	1749833	13	DoubleTree Lafayette	04/01/2020	8
07/17/2023	1648607	24	Hotel Indigo El Paso	07/01/2020	8
07/17/2023	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
06/16/2023	1749833	13	DoubleTree Lafayette	04/01/2020	8
06/16/2023	1648607	24	Hotel Indigo El Paso	07/01/2020	8
06/16/2023	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
05/17/2023	1749833	13	DoubleTree Lafayette	04/01/2020	8
05/17/2023	1648607	24	Hotel Indigo El Paso	07/01/2020	8
05/17/2023	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
04/17/2023	1749833	13	DoubleTree Lafayette	04/01/2020	8
04/17/2023	1648607	24	Hotel Indigo El Paso	07/01/2020	8
04/17/2023	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
03/17/2023	1749833	13	DoubleTree Lafayette	04/01/2020	8
03/17/2023	1648607	24	Hotel Indigo El Paso	07/01/2020	8
03/17/2023	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
02/17/2023	1749833	13	DoubleTree Lafayette	04/01/2020	8
02/17/2023	1648607	24	Hotel Indigo El Paso	07/01/2020	8
02/17/2023	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
01/18/2023	1749833	13	DoubleTree Lafayette	04/01/2020	8
01/18/2023	1648607	24	Hotel Indigo El Paso	07/01/2020	8
01/18/2023	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
12/16/2022	1749833	13	DoubleTree Lafayette	04/01/2020	8
12/16/2022	1648607	24	Hotel Indigo El Paso	07/01/2020	8
12/16/2022	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
11/18/2022	1749833	13	DoubleTree Lafayette	04/01/2020	8
11/18/2022	1648607	24	Hotel Indigo El Paso	07/01/2020	8
11/18/2022	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
10/17/2022	1749833	13	DoubleTree Lafayette	04/01/2020	8
10/17/2022	1648607	24	Hotel Indigo El Paso	07/01/2020	8
10/17/2022	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8


Reports Available at sf.citidirect.com	v. 21.09.28	Page 27 of 40	© Copyright 2025 Citigroup

Citigroup Commercial Mortgage Trust 2017-B1

Commercial Mortgage Pass-Through Certificates, Series 2017-B1

HISTORICAL LOAN MODIFICATION DETAIL

June 17, 2025


Distribution				Modification	Modification
Date	Loan ID	OMCR	Property Name	Date	Code (4)

09/16/2022	1749833	13	DoubleTree Lafayette	04/01/2020	8
09/16/2022	1648607	24	Hotel Indigo El Paso	07/01/2020	8
09/16/2022	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
08/17/2022	1749833	13	DoubleTree Lafayette	04/01/2020	8
08/17/2022	1648607	24	Hotel Indigo El Paso	07/01/2020	8
08/17/2022	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
07/15/2022	1749833	13	DoubleTree Lafayette	04/01/2020	8
07/15/2022	1648607	24	Hotel Indigo El Paso	07/01/2020	8
07/15/2022	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
06/17/2022	1749833	13	DoubleTree Lafayette	04/01/2020	8
06/17/2022	1648607	24	Hotel Indigo El Paso	07/01/2020	8
06/17/2022	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
05/17/2022	1749833	13	DoubleTree Lafayette	04/01/2020	8
05/17/2022	1648607	24	Hotel Indigo El Paso	07/01/2020	8
05/17/2022	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
04/15/2022	1749833	13	DoubleTree Lafayette	04/01/2020	8
04/15/2022	1648607	24	Hotel Indigo El Paso	07/01/2020	8
04/15/2022	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
03/17/2022	1749833	13	DoubleTree Lafayette	04/01/2020	8
03/17/2022	1648607	24	Hotel Indigo El Paso	07/01/2020	8
03/17/2022	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
02/17/2022	1749833	13	DoubleTree Lafayette	04/01/2020	8
02/17/2022	1648607	24	Hotel Indigo El Paso	07/01/2020	8
02/17/2022	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
01/18/2022	1749833	13	DoubleTree Lafayette	04/01/2020	8
01/18/2022	1648607	24	Hotel Indigo El Paso	07/01/2020	8
01/18/2022	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
12/17/2021	1749833	13	DoubleTree Lafayette	04/01/2020	8
12/17/2021	1648607	24	Hotel Indigo El Paso	07/01/2020	8
12/17/2021	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
11/18/2021	1749833	13	DoubleTree Lafayette	04/01/2020	8
11/18/2021	1648607	24	Hotel Indigo El Paso	07/01/2020	8
11/18/2021	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8


Reports Available at sf.citidirect.com	v. 21.09.28	Page 28 of 40	© Copyright 2025 Citigroup

Citigroup Commercial Mortgage Trust 2017-B1

Commercial Mortgage Pass-Through Certificates, Series 2017-B1

HISTORICAL LOAN MODIFICATION DETAIL

June 17, 2025


Distribution				Modification	Modification
Date	Loan ID	OMCR	Property Name	Date	Code (4)

10/18/2021	1749833	13	DoubleTree Lafayette	04/01/2020	8
10/18/2021	1648607	24	Hotel Indigo El Paso	07/01/2020	8
10/18/2021	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
09/17/2021	1749833	13	DoubleTree Lafayette	04/01/2020	8
09/17/2021	1648607	24	Hotel Indigo El Paso	07/01/2020	8
09/17/2021	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
08/17/2021	1749833	13	DoubleTree Lafayette	04/01/2020	8
08/17/2021	1648607	24	Hotel Indigo El Paso	07/01/2020	8
08/17/2021	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
07/16/2021	1749833	13	DoubleTree Lafayette	04/01/2020	8
07/16/2021	1648607	24	Hotel Indigo El Paso	07/01/2020	8
07/16/2021	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
06/17/2021	1749833	13	DoubleTree Lafayette	04/01/2020	8
06/17/2021	1648607	24	Hotel Indigo El Paso	07/01/2020	8
06/17/2021	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
05/17/2021	1749833	13	DoubleTree Lafayette	04/01/2020	8
05/17/2021	1648607	24	Hotel Indigo El Paso	07/01/2020	8
05/17/2021	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
04/16/2021	1749833	13	DoubleTree Lafayette	04/01/2020	8
04/16/2021	1648607	24	Hotel Indigo El Paso	07/01/2020	8
04/16/2021	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
03/17/2021	1749833	13	DoubleTree Lafayette	04/01/2020	8
03/17/2021	1648607	24	Hotel Indigo El Paso	07/01/2020	8
02/18/2021	1749833	13	DoubleTree Lafayette	04/01/2020	8
02/18/2021	1648607	24	Hotel Indigo El Paso	07/01/2020	8
01/15/2021	1749833	13	DoubleTree Lafayette	04/01/2020	8
01/15/2021	1648607	24	Hotel Indigo El Paso	07/01/2020	8
12/17/2020	1749833	13	DoubleTree Lafayette	04/01/2020	8
11/18/2020	1749833	13	DoubleTree Lafayette	04/01/2020	8
10/19/2020	1749833	13	DoubleTree Lafayette	04/01/2020	8
09/17/2020	1749833	13	DoubleTree Lafayette	04/01/2020	8
08/17/2020	1749833	13	DoubleTree Lafayette	04/01/2020	8


Reports Available at sf.citidirect.com	v. 21.09.28	Page 29 of 40	© Copyright 2025 Citigroup

Citigroup Commercial Mortgage Trust 2017-B1

Commercial Mortgage Pass-Through Certificates, Series 2017-B1

SPECIALLY SERVICED LOAN DETAIL

June 17, 2025


			Special Servicing	Ending	Ending	Most	Most Recent	Most Recent	Most Recent
		Workout	Fee Amount	Scheduled	Actual	Recent	Valuation	Special Servicer	Master Servicer
Loan ID	OMCR	Strategy (3)	Plus Adjustments	Balance	Balance	Value	Date	Transfer Date	Return Date

1647637	27	11	3,500.00	5,758,543.78	5,784,409.65	16,200,000.00	09/17/2024	09/20/2021
304101859	30	2	3,500.00	8,770,446.11	9,401,987.23	6,100,000.00	01/14/2025	01/21/2020
Total	Count = 2		7,000.00	14,528,989.89	15,186,396.88	22,300,000.00


Reports Available at sf.citidirect.com	v. 21.09.28	Page 30 of 40	© Copyright 2025 Citigroup

Citigroup Commercial Mortgage Trust 2017-B1

Commercial Mortgage Pass-Through Certificates, Series 2017-B1

HISTORICAL SPECIALLY SERVICED LOANS

June 17, 2025


				Special Servicing	Ending	Ending	Most	Most Recent	Most Recent	Most Recent
Distribution			Workout	Fee Amount	Scheduled	Actual	Recent	Valuation	Special Servicer	Master Servicer
Date	Loan ID	OMCR	Strategy (3)	Plus Adjustments	Balance	Balance	Value	Date	Transfer Date	Return Date

06/17/2025	1647637	27	11	3,500.00	5,758,543.78	5,784,409.65	16,200,000.00	09/17/2024	09/20/2021
05/16/2025	1647637	27	11	3,500.00	8,316,178.80	8,316,178.80	16,200,000.00	09/17/2024	09/20/2021
04/17/2025	1647637	27	11	3,500.00	8,342,937.93	8,422,646.39	16,200,000.00	09/17/2024	09/20/2021
03/17/2025	1647637	27	11	3,500.00	8,368,610.56	8,422,646.39	16,200,000.00	09/17/2024	09/20/2021
02/18/2025	1647637	27	11	3,500.00	8,397,172.91	8,422,646.39	16,200,000.00	09/17/2024	09/20/2021
01/17/2025	1647637	27	11	3,500.00	8,422,646.39	8,448,026.33	16,200,000.00	09/17/2024	09/20/2021
12/17/2024	1647637	27	11	3,500.00	8,448,026.33	8,474,316.88	16,200,000.00	09/17/2024	09/20/2021
11/18/2024	1647637	27	11	3,500.00	8,474,316.88	8,499,507.08	16,200,000.00	09/17/2024	09/20/2021
10/18/2024	1647637	27	11	3,500.00	8,499,507.08	8,499,507.08	16,400,000.00	10/24/2023	09/20/2021
09/17/2024	1647637	27	11	3,500.00	8,525,614.66	8,525,614.66	16,400,000.00	10/24/2023	09/20/2021
08/16/2024	1647637	27	11	3,500.00	8,550,616.50	8,550,616.50	16,400,000.00	10/24/2023	09/20/2021
07/17/2024	1647637	27	11	3,500.00	8,575,526.53	8,575,526.53	16,400,000.00	10/24/2023	09/20/2021
06/17/2024	1647637	27	11	3,500.00	8,601,363.94	8,626,087.62	16,400,000.00	10/24/2023	09/20/2021
05/17/2024	1647637	27	11	3,500.00	8,626,087.62	8,626,087.62	16,400,000.00	10/24/2023	09/20/2021
04/17/2024	1647637	27	11	3,500.00	8,651,745.34	8,676,284.02	16,400,000.00	10/24/2023	09/20/2021
03/15/2024	1647637	27	11	3,500.00	8,676,284.02	8,676,284.02	16,400,000.00	10/24/2023	09/20/2021
02/16/2024	1647637	27	11	3,500.00	8,702,794.33	8,702,794.33	16,400,000.00	10/24/2023	09/20/2021
01/18/2024	1647637	27	11	3,500.00	8,727,145.56	8,751,407.37	16,400,000.00	10/24/2023	09/20/2021
12/15/2023	1647637	27	11	3,500.00	8,751,407.37	8,776,619.70	16,400,000.00	10/24/2023	09/20/2021
11/17/2023	1647637	27	11	3,500.00	8,776,619.70	8,776,619.70	18,200,000.00	12/01/2022	09/20/2021
10/17/2023	1647637	27	11	3,500.00	8,800,699.84	8,825,736.99	18,200,000.00	12/01/2022	09/20/2021
09/15/2023	1647637	27	11	3,500.00	8,825,736.99	8,825,736.99	18,200,000.00	12/01/2022	09/20/2021
08/17/2023	1647637	27	11	3,500.00	8,849,636.77	8,849,636.77	18,200,000.00	12/01/2022	09/20/2021
07/17/2023	1647637	27	11	3,500.00	8,873,448.79	8,898,227.39	18,200,000.00	12/01/2022	09/20/2021
06/16/2023	1647637	27	11	3,500.00	8,898,227.39	8,898,227.39	18,200,000.00	12/01/2022	09/20/2021
05/17/2023	1647637	27	11	3,500.00	8,921,860.99	8,946,467.53	18,200,000.00	12/01/2022	09/20/2021
04/17/2023	1647637	27	11	3,500.00	8,946,467.53	8,946,467.53	18,200,000.00	12/01/2022	09/20/2021
03/17/2023	1647637	27	11	3,500.00	8,969,923.99	8,969,923.99	18,200,000.00	12/01/2022	09/20/2021
02/17/2023	1647637	27	11	3,500.00	8,996,491.28	8,996,491.28	18,200,000.00	12/01/2022	09/20/2021
01/18/2023	1647637	27	11	3,500.00	9,019,764.05	9,019,764.05	18,200,000.00	12/01/2022	09/20/2021
12/16/2022	1647637	27	11	3,500.00	9,042,951.36	9,042,951.36	18,200,000.00	12/01/2022	09/20/2021
11/18/2022	1647637	27	11	3,500.00	9,067,127.55	9,067,127.55	17,100,000.00	05/05/2017	09/20/2021


Reports Available at sf.citidirect.com	v. 21.09.28	Page 31 of 40	© Copyright 2025 Citigroup

Citigroup Commercial Mortgage Trust 2017-B1

Commercial Mortgage Pass-Through Certificates, Series 2017-B1

HISTORICAL SPECIALLY SERVICED LOANS


	June 17, 2025




Most Recent	Most Recent
Servicer	Master Servicer


				Special Servicing	Ending	Ending	Most	Most Recent
Distribution			Workout	Fee Amount	Scheduled	Actual	Recent	Valuation	Special
Date	Loan ID	OMCR	Strategy (3)	Plus Adjustments	Balance	Balance	Value	Date	Transfer Date	Return Date

10/17/2022	1647637	27	11	3,500.00	9,090,140.94	9,090,140.94	17,100,000.00	05/05/2017	09/20/2021
09/16/2022	1647637	27	11	3,500.00	9,114,149.42	9,114,149.42	17,100,000.00	05/05/2017	09/20/2021
08/17/2022	1647637	27	11	3,500.00	9,136,990.15	9,159,747.00	17,100,000.00	05/05/2017	09/20/2021
07/15/2022	1647637	27	11	3,500.00	9,159,747.00	9,183,508.10	17,100,000.00	05/05/2017	09/20/2021
06/17/2022	1647637	27	11	3,500.00	9,183,508.10	9,183,508.10	17,100,000.00	05/05/2017	09/20/2021
05/17/2022	1647637	27	11	3,500.00	9,206,094.14	9,252,106.98	17,100,000.00	05/05/2017	09/20/2021
04/15/2022	1647637	27	11	3,500.00	9,229,690.52	9,252,106.98	17,100,000.00	05/05/2017	09/20/2021
03/17/2022	1647637	27	11	3,500.00	9,252,106.98	9,277,738.03	17,100,000.00	05/05/2017	09/20/2021
02/17/2022	1647637	27	13	3,500.00	9,277,738.03	9,299,978.05	17,100,000.00	05/05/2017	09/20/2021
01/18/2022	1647637	27	13	3,500.00	9,299,978.05	9,299,978.05	17,100,000.00	05/05/2017	09/20/2021
12/17/2021	1647637	27	13	3,500.00	9,322,136.41	9,322,136.41	17,100,000.00	05/05/2017	09/20/2021
11/18/2021	1647637	27	13	3,500.00	9,345,320.38	9,345,320.38	17,100,000.00	05/05/2017	09/20/2021
10/18/2021	1647637	27	13	3,500.00	9,367,312.24	9,367,312.24	17,100,000.00	05/05/2017	09/20/2021
03/17/2021	1648607	24	8	-	10,376,494.06	10,376,494.06	12,800,000.00	09/28/2020	08/10/2020	02/11/2021
02/18/2021	1648607	24	1	-	10,395,520.76	10,395,520.76	12,800,000.00	09/28/2020	08/10/2020
01/15/2021	1648607	24	1	-	10,410,402.46	10,425,223.98	12,800,000.00	09/28/2020	08/10/2020
12/17/2020	1648607	24	1	-	10,425,223.98	10,516,958.99	12,800,000.00	09/28/2020	08/10/2020
11/18/2020	1648607	24	1	-	10,441,347.57	10,531,349.63	20,700,000.00	02/01/2017	08/10/2020
10/19/2020	1648607	24	1	-	10,456,043.96	10,531,349.63	20,700,000.00	02/01/2017	08/10/2020
09/17/2020	1648607	24	13	-	10,472,046.92	10,531,349.63	20,700,000.00	02/01/2017	08/10/2020
08/17/2020	1648607	24	13	-	10,486,619.17	10,531,349.63	20,700,000.00	02/01/2017	08/10/2020
06/17/2025	304101859	30	2	3,500.00	8,770,446.11	9,401,987.23	6,100,000.00	01/14/2025	01/21/2020
05/16/2025	304101859	30	2	3,500.00	8,770,446.11	9,401,987.23	6,100,000.00	01/14/2025	01/21/2020
04/17/2025	304101859	30	2	3,500.00	8,770,446.11	9,401,987.23	6,100,000.00	01/14/2025	01/21/2020
03/17/2025	304101859	30	2	3,500.00	8,770,446.11	9,401,987.23	6,100,000.00	01/14/2025	01/21/2020
02/18/2025	304101859	30	2	3,500.00	8,770,446.11	9,401,987.23	6,100,000.00	01/14/2025	01/21/2020
01/17/2025	304101859	30	2	3,500.00	8,770,446.11	9,401,987.23	6,300,000.00	12/11/2023	01/21/2020
12/17/2024	304101859	30	2	3,500.00	8,770,446.11	9,401,987.23	6,300,000.00	12/11/2023	01/21/2020
11/18/2024	304101859	30	2	3,500.00	8,770,446.11	9,401,987.23	6,300,000.00	12/11/2023	01/21/2020
10/18/2024	304101859	30	2	3,500.00	8,770,446.11	9,401,987.23	6,300,000.00	12/11/2023	01/21/2020
09/17/2024	304101859	30	2	3,500.00	8,770,446.11	9,401,987.23	6,300,000.00	12/11/2023	01/21/2020
08/16/2024	304101859	30	2	3,500.00	8,770,446.11	9,401,987.23	6,300,000.00	12/11/2023	01/21/2020


Reports Available at sf.citidirect.com	v. 21.09.28	Page 32 of 40	© Copyright 2025 Citigroup


Citigroup Commercial Mortgage Trust 2017-B1
Commercial Mortgage Pass-Through Certificates, Series 2017-B1										June 17, 2025

HISTORICAL SPECIALLY SERVICED LOANS


				Special Servicing	Ending	Ending	Most	Most Recent	Most Recent	Most Recent
Distribution			Workout	Fee Amount	Scheduled	Actual	Recent	Valuation	Special Servicer Master Servicer
Date	Loan ID	OMCR	Strategy (3)	Plus Adjustments	Balance	Balance	Value	Date	Transfer Date	Return Date

07/17/2024	304101859	30	2	3,500.00	8,770,446.11	9,401,987.23	6,300,000.00	12/11/2023	01/21/2020
06/17/2024	304101859	30	2	3,500.00	8,770,446.11	9,401,987.23	6,300,000.00	12/11/2023	01/21/2020
05/17/2024	304101859	30	2	3,500.00	8,770,446.11	9,401,987.23	6,300,000.00	12/11/2023	01/21/2020
04/17/2024	304101859	30	2	3,500.00	8,770,446.11	9,401,987.23	6,300,000.00	12/11/2023	01/21/2020
03/15/2024	304101859	30	2	3,500.00	8,770,446.11	9,401,987.23	6,300,000.00	12/11/2023	01/21/2020
02/16/2024	304101859	30	2	3,500.00	8,770,446.11	9,401,987.23	6,300,000.00	12/11/2023	01/21/2020
01/18/2024	304101859	30	2	3,500.00	8,770,446.11	9,401,987.23	7,090,000.00	12/28/2022	01/21/2020
12/15/2023	304101859	30	2	3,500.00	8,770,446.11	9,401,987.23	7,090,000.00	12/28/2022	01/21/2020
11/17/2023	304101859	30	2	3,500.00	8,770,446.11	9,401,987.23	7,090,000.00	12/28/2022	01/21/2020
10/17/2023	304101859	30	2	3,500.00	8,770,446.11	9,401,987.23	7,090,000.00	12/28/2022	01/21/2020
09/15/2023	304101859	30	2	3,500.00	8,786,300.63	9,401,987.23	7,090,000.00	12/28/2022	01/21/2020
08/17/2023	304101859	30	2	3,500.00	8,800,895.09	9,401,987.23	7,090,000.00	12/28/2022	01/21/2020
07/17/2023	304101859	30	2	3,500.00	8,815,428.10	9,401,987.23	7,090,000.00	12/28/2022	01/21/2020
06/16/2023	304101859	30	2	3,500.00	8,831,099.32	9,401,987.23	7,090,000.00	12/28/2022	01/21/2020
05/17/2023	304101859	30	2	3,500.00	8,845,505.16	9,401,987.23	7,090,000.00	12/28/2022	01/21/2020
04/17/2023	304101859	30	2	3,500.00	8,861,053.81	9,401,987.23	7,090,000.00	12/28/2022	01/21/2020
03/17/2023	304101859	30	2	3,500.00	8,875,333.54	9,401,987.23	7,090,000.00	12/28/2022	01/21/2020
02/17/2023	304101859	30	2	3,500.00	8,893,176.62	9,401,987.23	7,090,000.00	12/28/2022	01/21/2020
01/18/2023	304101859	30	2	3,500.00	8,907,321.10	9,401,987.23	7,450,000.00	12/19/2021	01/21/2020
12/16/2022	304101859	30	2	3,500.00	8,921,406.03	9,401,987.23	7,450,000.00	12/19/2021	01/21/2020
11/18/2022	304101859	30	2	3,500.00	8,936,645.39	9,401,987.23	7,450,000.00	12/19/2021	01/21/2020
10/17/2022	304101859	30	2	3,500.00	8,950,606.86	9,401,987.23	7,450,000.00	12/19/2021	01/21/2020
09/16/2022	304101859	30	2	3,500.00	8,965,727.22	9,401,987.23	7,450,000.00	12/19/2021	01/21/2020
08/17/2022	304101859	30	2	3,500.00	8,979,566.25	9,401,987.23	7,450,000.00	12/19/2021	01/21/2020
07/15/2022	304101859	30	2	3,500.00	8,993,347.01	9,401,987.23	7,450,000.00	12/19/2021	01/21/2020
06/17/2022	304101859	30	2	3,500.00	9,008,293.21	9,401,987.23	7,450,000.00	12/19/2021	01/21/2020
05/17/2022	304101859	30	2	3,500.00	9,021,953.02	9,401,987.23	7,450,000.00	12/19/2021	01/21/2020
04/15/2022	304101859	30	2	3,500.00	9,036,782.65	9,401,987.23	7,450,000.00	12/19/2021	01/21/2020
03/17/2022	304101859	30	2	3,500.00	9,050,322.51	9,401,987.23	7,450,000.00	12/19/2021	01/21/2020
02/17/2022	304101859	30	2	3,500.00	9,067,499.87	9,401,987.23	7,450,000.00	12/19/2021	01/21/2020
01/18/2022	304101859	30	2	3,500.00	9,080,910.41	9,401,987.23	8,330,000.00	01/14/2021	01/21/2020
12/17/2021	304101859	30	2	3,500.00	9,094,264.48	9,401,987.23	8,330,000.00	01/14/2021	01/21/2020
Reports Available at sf.citidirect.com			v. 21.09.28		Page 33 of 40				© Copyright 2025 Citigroup


Citigroup Commercial Mortgage Trust 2017-B1
Commercial Mortgage Pass-Through Certificates, Series 2017-B1											June 17, 2025

HISTORICAL SPECIALLY SERVICED LOANS


				Special Servicing		Ending	Ending	Most	Most Recent	Most Recent	Most Recent
Distribution			Workout	Fee Amount		Scheduled	Actual	Recent	Valuation	Special Servicer Master Servicer
Date	Loan ID	OMCR	Strategy (3)	Plus Adjustments		Balance	Balance	Value	Date	Transfer Date	Return Date

11/18/2021	304101859	30	2	3,500.00		9,108,799.44	9,413,989.49	8,330,000.00	01/14/2021	01/21/2020
10/18/2021	304101859	30	2	3,500.00		9,122,036.09	9,413,989.49	8,330,000.00	01/14/2021	01/21/2020
09/17/2021	304101859	30	2	3,500.00		9,136,457.88	9,413,989.49	8,330,000.00	01/14/2021	01/21/2020
08/17/2021	304101859	30	2	3,500.00		9,149,578.09	9,413,989.49	8,330,000.00	01/14/2021	01/21/2020
07/16/2021	304101859	30	2	3,500.00		9,162,643.06	9,413,989.49	8,330,000.00	01/14/2021	01/21/2020
06/17/2021	304101859	30	2	3,500.00		9,176,899.38	9,413,989.49	8,330,000.00	01/14/2021	01/21/2020
05/17/2021	304101859	30	2	3,500.00		9,189,849.32	9,413,989.49	8,330,000.00	01/14/2021	01/21/2020
04/16/2021	304101859	30	2	3,500.00		9,203,994.77	9,413,989.49	8,330,000.00	01/14/2021	01/21/2020
03/17/2021	304101859	30	2	3,500.00		9,216,830.63	9,413,989.49	8,330,000.00	01/14/2021	01/21/2020
02/18/2021	304101859	30	2	3,500.00		9,233,374.53	9,413,989.49	8,500,000.00	02/29/2020	01/21/2020
01/15/2021	304101859	30	2	3,500.00		9,246,086.69	9,413,989.49	8,500,000.00	02/29/2020	01/21/2020
12/17/2020	304101859	30	2	3,500.00		9,258,745.33	9,413,989.49	8,500,000.00	02/29/2020	01/21/2020
11/18/2020	304101859	30	2	3,500.00		9,272,610.03	9,413,989.49	8,500,000.00	02/29/2020	01/21/2020
10/19/2020	304101859	30	2	3,500.00		9,285,157.00	9,413,989.49	8,500,000.00	02/29/2020	01/21/2020
09/17/2020	304101859	30	2	3,500.00		9,298,914.07	9,413,989.49	8,500,000.00	02/29/2020	01/21/2020
08/17/2020	304101859	30	2	3,500.00		9,311,350.29	9,413,989.49	8,500,000.00	02/29/2020	01/21/2020
07/17/2020	304101859	30	2	3,500.00		9,323,734.15	9,413,989.49	8,500,000.00	02/29/2020	01/21/2020
06/17/2020	304101859	30	2	3,500.00		9,337,334.02	9,413,989.49	8,500,000.00	02/29/2020	01/21/2020
05/15/2020	304101859	30	2	3,500.00		9,349,608.49	9,413,989.49	8,500,000.00	02/29/2020	01/21/2020
04/17/2020	304101859	30	13	3,500.00		9,363,102.92	9,413,989.49	8,500,000.00	02/29/2020	01/21/2020
03/17/2020	304101859	30	13	3,500.00		9,375,268.89	9,413,989.49	13,900,000.00	02/15/2017	01/21/2020
02/18/2020	304101859	30	13	3,500.00		9,389,934.22	9,439,117.59	13,900,000.00	02/15/2017	01/21/2020
05/17/2021	304101861	4	8	5,441.48		52,142,057.56	52,142,057.56	65,600,000.00	10/29/2020	08/19/2020	04/21/2021
04/16/2021	304101861	4	1	(72,815.41	)	52,238,198.79	52,327,266.50	82,000,000.00	07/06/2017	08/19/2020
03/17/2021	304101861	4	1	10,195.91		52,327,266.50	53,238,204.74	82,000,000.00	07/06/2017	08/19/2020
02/18/2021	304101861	4	13	11,307.34		52,436,131.77	53,238,204.74	82,000,000.00	07/06/2017	08/19/2020
01/15/2021	304101861	4	13	11,326.27		52,524,413.46	53,238,204.74	82,000,000.00	07/06/2017	08/19/2020
12/17/2020	304101861	4	13	10,980.56		52,612,344.58	53,238,204.74	82,000,000.00	07/06/2017	08/19/2020
11/18/2020	304101861	4	13	11,365.35		52,706,678.26	53,238,204.74	82,000,000.00	07/06/2017	08/19/2020
10/19/2020	304101861	4	13	11,018.23		52,793,885.58	53,238,204.74	82,000,000.00	07/06/2017	08/19/2020
09/17/2020	304101861	4	13	6,621.75		52,887,521.50	53,238,204.74	82,000,000.00	07/06/2017	08/19/2020
05/15/2020	307971614	23	8	-		11,908,830.85	11,908,830.85	55,750,000.00	04/07/2017		04/17/2020
Reports Available at sf.citidirect.com			v. 21.09.28			Page 34 of 40				© Copyright 2025 Citigroup


Citigroup Commercial Mortgage Trust 2017-B1
Commercial Mortgage Pass-Through Certificates, Series 2017-B1								June 17, 2025
UNSCHEDULED PRINCIPAL DETAIL


		Liquidation /	Liquid / Prepay	Principal	Principal	Prepayment Interest	Prepayment	Yield Maintenance
Loan ID	OMCR	Prepayment Date	Code (5)	Collections	Adjustments	Excess / (Shortfall)	Penalties (PPP)	Penalties (YM)
1647637	27	06/01/2025	1	2,531,769.15	-	-	-	-




Reports Available at sf.citidirect.com	v. 21.09.28			Page 35 of 40			© Copyright 2025 Citigroup


Citigroup Commercial Mortgage Trust 2017-B1
Commercial Mortgage Pass-Through Certificates, Series 2017-B1									June 17, 2025

HISTORICAL UNSCHEDULED PRINCIPAL DETAIL


Distribution			Liquidation /	Liquid / Prepay	Principal	Principal	Prepayment Interest	Prepayment	Yield Maintenance
Date	Loan ID	OMCR	Prepayment Date	Code (5)	Collections	Adjustments	Excess / (Shortfall)	Penalties (PPP)	Penalties (YM)

6/17/2025	1647637	27	06/01/2025	1	2,531,769.15	-	-	-	-
4/17/2025	308511028	28	04/11/2025	2	8,807,720.12	-	-	-	-
7/17/2023	300801627	44	06/28/2023	9	4,540,137.60	-	-	-	45,473.64
6/17/2022	307971614	23	06/03/2022	5	11,446,234.79	-	-	-	-
5/17/2022	304101836	6	05/03/2022	2	42,000,000.00	-	-	-	-
9/17/2019	1749084	22	08/01/2018	11	3,156,779.24	-	-	-	254,846.27




Reports Available at sf.citidirect.com		v. 21.09.28			Page 36 of 40			© Copyright 2025 Citigroup


Citigroup Commercial Mortgage Trust 2017-B1
Commercial Mortgage Pass-Through Certificates, Series 2017-B1										June 17, 2025
LIQUIDATED LOAN DETAIL


		Beginning	Most	Liquidation	Net		Net	Realized	Date of		Loss with
		Scheduled	Recent	Sales	Proceeds	Liquidation	Proceeds	Loss to	Current	Current Cumulative	Cumulative
Loan ID	OMCR	Balance	Value	Price	Received	Expense	Available	Trust	Adj. to Loan	Adj. to Loan Adj. to Loan	Adj. to Trust
No Loans liquidated to Report.




Reports Available at sf.citidirect.com		v. 21.09.28				Page 37 of 40				© Copyright 2025 Citigroup


Citigroup Commercial Mortgage Trust 2017-B1
Commercial Mortgage Pass-Through Certificates, Series 2017-B1										June 17, 2025
HISTORICAL LIQUIDATED LOAN


		Beginning	Most	Liquidation	Net		Net	Realized	Date of		Loss with
Distribution		Scheduled	Recent	Sales	Proceeds	Liquidation	Proceeds	Loss to	Current	Current Cumulative	Cumulative
Date	Loan ID OMCR	Balance	Value	Price	Received	Expense	Available	Trust	Adj. to Loan	Adj. to Loan Adj. to Loan	Adj. to Trust
No Loans liquidated to Report.




Reports Available at sf.citidirect.com		v. 21.09.28				Page 38 of 40				© Copyright 2025 Citigroup


Citigroup Commercial Mortgage Trust 2017-B1
Commercial Mortgage Pass-Through Certificates, Series 2017-B1					June 17, 2025

CREFC® INVESTOR REPORTING PACKAGE LEGENDS

1\|CREFC Investor Reporting Package Legends
	Property Type (1)		Workout Strategy (3)		Liquidation/Prepayment Code (5)

MF	Multifamily	1	Modification	1	Partial Liquidation (Curtailment)
RT	Retail	2	Foreclosure	2	Payoff Prior To Maturity
HC	HealthCare	3	Bankruptcy	3	Disposition / Liquidation
IN	Industrial	4	Extension	4	Repurchase / Substitution
MH	Mobile Home Park	5	Note Sale	5	Full Payoff At Maturity
OF	Office	6	DPO	6	DPO
MU	Mixed Use	7	REO	7	Liquidation prior to 7/1/2006
LO	Lodging	8	Resolved	8	Payoff With Penalty
SS	Self Storage	9	Pending Return to Master Servicer	9	Payoff With Yield Maintenance
SE	Securities	10	Deed In Lieu of Foreclosure	10	Curtailment With Penalty
CH	Cooperative Housing	11	Full Payoff	11	Curtailment With Yield Maintenance
ZZ	Missing Information	12	Reps and Warranties
SF	SF	13	TBD
WH	Warehouse	98	Other
OT	Other

Modification Code (4)

	Payment Status of Loan (2)
		1	Maturity Date Extension
A	In Grace Period	2	Amortization Change
B	Late, but less than 30 Days	3	Principal Write-Off
0	Current	4	Blank (formerly Combination)
1	30-59 Days Delinquent	5	Temporary Rate Reduction
2	60-89 Days Delinquent	6	Capitalization of Interest
3	90-120 Days Delinquent	7	Capitalization of Taxes
4	Performing Matured Balloon	8	Other
5	Non Performing Matured Balloon	9	Combination
6	121+ Days Delinquent	10	Forbearance




Reports Available at sf.citidirect.com		v. 21.09.28	Page 39 of 40		© Copyright 2025 Citigroup


Citigroup Commercial Mortgage Trust 2017-B1
Commercial Mortgage Pass-Through Certificates, Series 2017-B1			June 17, 2025
NOTES
No Notes available for this deal at this time.




Reports Available at sf.citidirect.com	v. 21.09.28	Page 40 of 40	© Copyright 2025 Citigroup

CITIGROUP COMMERCIAL MORTGAGE TRUST 2017-B1 10-D