UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

FORM 8-K

CURRENT REPORT
Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934

Date of Report (Date of earliest event reported) May 17, 2005

Structured Asset Securities Corporation II
(Exact name of registrant as specified in its charter)

Delaware
(State or other jurisdiction
of incorporation)

333-119328-03
(Commission
File Number)

82-0569805
(IRS Employer
Identification No.)

745 Seventh Avenue, New York, New York
(Address of principal executive offices)

10019
(Zip Code)

Registrant's telephone number, including area code 212-526-7000

(Former name or former address, if changed since last report.)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

[ ] Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

[ ] Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

[ ] Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

[ ] Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Section 8 - Other Events

Item 8.01. Other Events.

This current report on Form 8-K relates to the monthly distribution reported to the holders of LB-UBS Commercial Mortgage Trust 2005-C1, Commercial Mortgage Pass-Through Certificates, Series 2005-C1, which was made on May 17, 2005.

Section 9 - Financial Statements and Exhibits

Item 9.01 Financial Statements and Exhibits.

99.1 Monthly distribution report pursuant to section 4.02 of the Pooling and Servicing Agreement for the distribution on May 17, 2005.

(Exhibit No. Description)

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

LASALLE BANK NATIONAL ASSOCIATION, IN ITS CAPACITY AS TRUSTEE UNDER THE POOLING AND SERVICING AGREEMENT ON BEHALF OF STRUCTURED ASSET SECURITIES CORPORATION II, REGISTRANT

By: /s/ Russell Goldenberg
Russell Goldenberg
Group Senior Vice President

Date: May 20, 2005

LB-UBS Commercial Mortgage Trust 2005-C1

Commercial Mortgage Pass-Through Certificates,

Series 2005-C1

ABN AMRO Acct: 722354.1

Reporting Package Table of Contents

Payment Date:
Prior Payment:
Next Payment:
Record Date:

17-May-05
17-May-05

15-Apr-05

17-Jun-05

29-Apr-05

Administrator:
Kathryn Hawkinson 312.904.6561
kathryn.hawkinson@abnamro.com

Analyst:
Brian Scheff 714.259.6278
brian.scheff@abnamro.com

Statement Date:

135 S. LaSalle Street, Suite 1625
Chicago, IL 60603
USA

Statements to Certificateholders
Cash Reconciliation Summary
Bond Interest Reconciliation
Shortfall Summary Report

Asset-Backed Facts ~ 15 Month Loan Status Summary

Asset-Backed Facts ~ 15 Month Loan Payoff/Loss Summary
Mortgage Loan Characteristics

Delinquent Loan Detail
Loan Level Detail
Realized Loss Detail

Page 2-4
Page 5-7
Page 8
Page 9

Page 10-12

Page 13-15
Page 16-18

Page 19
Page 20-23

Page 24

Historical REO Report

Appraisal Reduction Detail
Appraisal Reduction Detail
Modified Loan Detail

Historical Collateral Prepayment
Specially Serviced (Part I) - Loan Detail
Specially Serviced (Part II) - Servicer Comments

Page 25

Page 26
Page 27
Page 28

Page 29
Page 30
Page 31

Page(s)

Information is available for this issue from the following sources

Issue Id:

Monthly Data File
Name:

LUBS05C1

LUBS05C1_200505_3.ZIP

Closing Date:

First Payment Date:

Rated Final Payment: Date:

10-Feb-05
17-Feb-05

17-Feb-40

Summary of Loan Maturity Extensions
Rating Information
Other Related Information

Page 32
Page 33-34

Page 35

Parties to The Transaction

Depositor: Structured Asset Securities Corporation II

Underwriter: Lehman Brothers Inc./UBS Securities LLC

Master Servicer: Wachovia Bank, National Association

Special Servicer: Allied Capital Corporation

Rating Agency: Standard & Poor's Rating Services/Moody's Investors Service, Inc.

800.246.5761

LaSalle Factor Line

LaSalle Web Site

Servicer Web Site

www.wachovia.com

www.etrustee.net

Page 1 of 35

Class

CUSIP

Original

Opening

Principal

Negative

Closing

Interest

Pass-Through

Per $ 1000

Next Rate(3)

WAC:
WAMM:

Payment Date:
Prior Payment:
Next Payment:
Record Date:

5.528402%

17-May-05
17-May-05

15-Apr-05

17-Jun-05

29-Apr-05

LB-UBS Commercial Mortgage Trust 2005-C1

Commercial Mortgage Pass-Through Certificates,

Series 2005-C1

Face Value (1)

Balance

Payment

Adj. or Loss

Amortization

Balance

Payment (2)

Adjustment

Rate

100

REMIC III

Statement Date:

ABN AMRO Acct: 722354.1

969.074069434

10.543267170

0.000000000

958.530802264

3.281123208

Fixed

0.00

0.000000000

4.06300000%

0.000000000

52108H2Q6

A-1

53,000,000.00

558,793.16

0.00

50,802,132.52

173,899.53

51,360,925.68

1000.000000000

0.000000000

1000.000000000

3.591666681

Fixed

0.00

0.000000000

4.31000000%

0.000000000

52108H2R4

A-2

232,000,000.00

0.00

232,000,000.00

833,266.67

232,000,000.00

1000.000000000

0.000000000

1000.000000000

3.787500000

Fixed

0.00

0.000000000

4.54500000%

0.000000000

52108H2S2

A-3

162,000,000.00

0.00

162,000,000.00

613,575.00

162,000,000.00

1000.000000000

0.000000000

1000.000000000

3.806666667

Fixed

0.00

0.000000000

4.56800000%

0.000000000

52108H2T0

A-AB

54,000,000.00

0.00

54,000,000.00

205,560.00

54,000,000.00

1000.000000000

0.000000000

1000.000000000

3.951666660

Fixed

0.00

0.000000000

4.74200000%

0.000000000

52108H2U7

A-4

531,842,000.00

0.00

531,842,000.00

2,101,662.30

531,842,000.00

998.956004615

0.351356010

0.000000000

998.604648604

3.813514545

Fixed

0.00

0.000000000

4.58100000%

0.000000000

52108H2V5

A-1A

186,798,000.00

65,632.60

0.00

186,537,351.15

712,356.89

186,602,983.75

1000.000000000

0.000000000

1000.000000000

4.005000049

Fixed

0.00

0.000000000

4.80600000%

0.000000000

52108H2W3

A-J

102,769,000.00

0.00

102,769,000.00

411,589.85

102,769,000.00

1000.000000000

0.000000000

1000.000000000

4.013333084

4.816000000%

0.00

0.000000000

4.81600000%

0.000000000

52108H2X1

13,351,000.00

0.00

13,351,000.00

53,582.01

13,351,000.00

1000.000000000

0.000000000

1000.000000000

4.030000000

4.836000000%

0.00

0.000000000

4.83600000%

0.000000000

52108H2Y9

26,704,000.00

0.00

26,704,000.00

107,617.12

26,704,000.00

1000.000000000

0.000000000

1000.000000000

4.046666492

4.856000000%

0.00

0.000000000

4.85600000%

0.000000000

52108H2Z6

19,073,000.00

0.00

19,073,000.00

77,182.07

19,073,000.00

1000.000000000

0.000000000

1000.000000000

4.103333199

4.924000000%

0.00

0.000000000

4.92400000%

0.000000000

52108H3A0

24,796,000.00

0.00

24,796,000.00

101,746.25

24,796,000.00

1000.000000000

0.000000000

1000.000000000

4.194166721

5.033000000%

0.00

0.000000000

5.03300000%

0.000000000

52108HZ23/U51394KM2/52108HZ31

15,259,000.00

0.00

15,259,000.00

63,998.79

15,259,000.00

1000.000000000

0.000000000

1000.000000000

4.296725695

5.316866146%

0.00

0.000000000

5.15607071%

0.000000000

52108HZ49/U51394KN0/52108HZ56

17,167,000.00

0.00

17,167,000.00

73,761.89

17,167,000.00

1000.000000000

0.000000000

1000.000000000

4.380058837

5.416866146%

0.00

0.000000000

5.25607071%

0.000000000

52108HZ64/U51394KP5/52108HZ72

17,166,000.00

0.00

17,166,000.00

75,188.09

17,166,000.00

1000.000000000

0.000000000

1000.000000000

4.584225611

5.661866146%

0.00

0.000000000

5.50107071%

0.000000000

52108HZ80/U51394KQ3/52108HZ98

22,889,000.00

0.00

22,889,000.00

104,928.34

22,889,000.00

Page 2 of 35

Notes: (1) N denotes notional balance not included in total (2) Accrued Interest Plus/Minus Interest Adjustment Minus Deferred Interest equals Interest Payment (3) Estimated. * Denotes Controlling Class

Class

CUSIP

Original

Opening

Principal

Negative

Closing

Interest

Pass-Through

Per $ 1000

Next Rate(3)

WAC:
WAMM:

Payment Date:
Prior Payment:
Next Payment:
Record Date:

5.528402%

17-May-05
17-May-05

15-Apr-05

17-Jun-05

29-Apr-05

LB-UBS Commercial Mortgage Trust 2005-C1

Commercial Mortgage Pass-Through Certificates,

Series 2005-C1

Face Value (1)

Balance

Payment

Adj. or Loss

Amortization

Balance

Payment (2)

Adjustment

Rate

100

REMIC III

Statement Date:

ABN AMRO Acct: 722354.1

1000.000000000

0.000000000

1000.000000000

3.863333916

4.636000000%

0.00

0.000000000

4.63600000%

0.000000000

52108H2A1/U51394KR1/52108H2B9

5,717,000.00

0.00

5,717,000.00

22,086.68

5,717,000.00

1000.000000000

0.000000000

1000.000000000

3.863333333

4.636000000%

0.00

0.000000000

4.63600000%

0.000000000

52108H2C7/U51394KS9/52108H2D5

7,623,000.00

0.00

7,623,000.00

29,450.19

7,623,000.00

1000.000000000

0.000000000

1000.000000000

3.863332459

4.636000000%

0.00

0.000000000

4.63600000%

0.000000000

52108H2E3/U51394KT7/52108H2F0

3,811,000.00

0.00

3,811,000.00

14,723.16

3,811,000.00

1000.000000000

0.000000000

1000.000000000

3.863334208

4.636000000%

0.00

0.000000000

4.63600000%

0.000000000

52108H2G8/U51394KU4/52108H2H6

3,812,000.00

0.00

3,812,000.00

14,727.03

3,812,000.00

1000.000000000

0.000000000

1000.000000000

3.863332459

4.636000000%

0.00

0.000000000

4.63600000%

0.000000000

52108H2J2/U51394KV2/52108H2K9

3,811,000.00

0.00

3,811,000.00

14,723.16

3,811,000.00

1000.000000000

0.000000000

1000.000000000

3.863332459

4.636000000%

0.00

0.000000000

4.63600000%

0.000000000

52108H2L7/U51394KW0/52108H2M5

3,811,000.00

0.00

3,811,000.00

14,723.16

3,811,000.00

1000.000000000

0.000000000

1000.000000000

3.863333275

4.636000000%

0.00

0.000000000

4.63600000%

0.000000000

52108H2N3/U51394KX8/52108H2P8

17,152,178.00

0.00

17,152,178.00

66,264.58

17,152,178.00

998.796963083

0.000000000

998.387383025

0.101479007

0.129801947%

0.00

0.000000000

0.12192148%

0.000000000

52108HY81/U51394KL4/52108HY99

X-CL

1,524,551,178.78

0.00

1,522,092,661.67

154,709.94

1,522,717,087.43

1000.000000000

0.000000000

1000.000000000

0.661697087

0.950986883%

0.00

0.000000000

0.79403650%

0.000000000

52108H3B8

X-CP

1,419,314,000.00

0.00

1,419,314,000.00

939,155.94

1,419,314,000.00

0.000000000

0.00

0.000000000

N/A

0.000000000

9ABST6739

R-LR

0.00

0.000000000

0.00

0.000000000

N/A

0.000000000

9ABST6705

R-I

0.00

0.000000000

0.00

0.000000000

N/A

0.000000000

9ABST6713

R-II

0.00

0.000000000

0.00

0.000000000

N/A

0.000000000

9ABST6721

RIII

0.00

Total P&I Payment

0.00

1,524,551,178.00

1,522,717,087.43

7,604,904.40

Total

1,522,092,661.67

624,425.76

0.00

6,980,478.64

Page 3 of 35

Class

CUSIP

Original

Opening

Principal

Negative

Closing

Interest

Pass-Through

Per $ 1000

Next Rate(3)

WAC:
WAMM:

Payment Date:
Prior Payment:
Next Payment:
Record Date:

5.528402%

17-May-05
17-May-05

15-Apr-05

17-Jun-05

29-Apr-05

LB-UBS Commercial Mortgage Trust 2005-C1

Commercial Mortgage Pass-Through Certificates,

Series 2005-C1

Face Value (1)

Balance

Payment

Adj. or Loss

Amortization

Balance

Payment (2)

Adjustment

Rate

100

Grantor Trust

Statement Date:

ABN AMRO Acct: 722354.1

0.000000000

0.00

0.000000000

N/A

0.000000000

9ABST6747

0.00

Total P&I Payment

0.00

Total

0.00

Page 4 of 35

LB-UBS Commercial Mortgage Trust 2005-C1

Payment Date:
Prior Payment:
Next Payment:
Record Date:

17-May-05
17-May-05

15-Apr-05

17-Jun-05

29-Apr-05

Commercial Mortgage Pass-Through Certificates,

Series 2005-C1

ABN AMRO Acct: 722354.1

Statement Date:

Cash Reconciliation Summary

Current Scheduled Interest

Interest Summary

Less Deferred Interest

Plus Gross Advance Interest

Less PPIS Reducing Scheduled Int

7,015,160.52

0.00
0.00

Less ASER Interest Adv Reduction

0.00

Less Other Adjustment

0.00

Total

7,015,160.52

Unscheduled Interest:
Prepayment Penalties

0.00

Yield Maintenance Penalties

0.00

Other Interest Proceeds

0.00

Total

0.00

Less Fees & Expenses Paid By/To Servicer

Less Fee Paid To Servicer
Less Fee Strips Paid by Servicer

Special Servicing Fees

Interest Due Serv on Advances

Recoup of Prior Advances

Misc. Fees & Expenses

Total Unscheduled Fees & Expenses
Total Interest Due Trust

Less Fees & Expenses Paid By/To Trust
Trustee Fee
Fee Strips
Misc. Fees
Interest Reserve Withholding

Plus Interest Reserve Deposit
Total

Total Interest Due Certs

Principal Summary

Scheduled Principal:
Current Scheduled Principal
Advanced Scheduled Principal
Scheduled Principal
Unscheduled Principal:
Curtailments
Prepayments in Full
Liquidation Proceeds
Repurchase Proceeds
Other Principal Proceeds
Total Unscheduled Principal
Remittance Principal

Remittance P&I Due Trust

Remittance P&I Due Certs

Pool Balance Summary

Beginning Pool
Scheduled Principal
Unscheduled Principal
Deferred Interest
Liquidations
Repurchases

Ending Pool

Balance

Count

Principal

Interest

Prior Outstanding
Plus Current Period
Less Recovered

Ending Outstanding

Servicing Fee Summary

Current Servicing Fees
Plus Fees Advanced for PPIS
Less Reduction for PPIS
Plus Delinquent Servicing Fees

Total Servicing Fees

PPIS Summary

Gross PPIS
Reduced by PPIE
Reduced by Shortfalls in Fees
Reduced by Other Amounts

PPIS Reducing Scheduled
Interest

PPIS Reducing Servicing Fee
PPIS Due Certificate

0.00

0.00
0.00

0.00

6,982,026.75

)

(1,548.10

0.00
0.00
0.00

)

(1,548.10

624,425.76

0.00

624,425.76

0.00
0.00
0.00
0.00
0.00
0.00

624,425.76

7,606,452.51

7,604,904.41

1,522,717,088.21

624,425.76

0.00

0.00
0.00

0.00

1,522,092,662.45

0.00

33,133.78

0.00
0.00
0.00

33,133.78

0.00
0.00
0.00
0.00
0.00
0.00

0.00

)

(33,133.78

6,980,478.65

Interest Not Advanced (

Current Period

)

0.00

Workout Fees
Liquidation Fees

0.00
0.00

Less Non Recovered

0.00

0.00
0.00

0.00

Advance Summary (Advance Made by Servicer)

Page 5 of 35

LB-UBS Commercial Mortgage Trust 2005-C1

Payment Date:
Prior Payment:
Next Payment:
Record Date:

17-May-05
17-May-05

15-Apr-05

17-Jun-05

29-Apr-05

Commercial Mortgage Pass-Through Certificates,

Series 2005-C1

ABN AMRO Acct: 722354.1

Statement Date:

Cash Reconciliation Summary Loan Group No. 1

Current Scheduled Interest

Interest Summary

Less Deferred Interest

Plus Gross Advance Interest

Less PPIS Reducing Scheduled Int

6,126,320.93

0.00
0.00

Less ASER Interest Adv Reduction

0.00

Less Other Adjustment

0.00

Total

6,126,320.93

Unscheduled Interest:
Prepayment Penalties

0.00

Yield Maintenance Penalties

0.00

Other Interest Proceeds

0.00

Total

0.00

Less Fees & Expenses Paid By/To Servicer

Less Fee Paid To Servicer
Less Fee Strips Paid by Servicer

Special Servicing Fees

Interest Due Serv on Advances

Recoup of Prior Advances

Misc. Fees & Expenses

Total Unscheduled Fees & Expenses
Total Interest Due Trust

Less Fees & Expenses Paid By/To Trust
Trustee Fee
Fee Strips
Misc. Fees
Interest Reserve Withholding

Plus Interest Reserve Deposit
Total

Total Interest Due Certs

Principal Summary

Remittance P&I Due Trust

Remittance P&I Due Certs

Pool Balance Summary

Beginning Pool
Scheduled Principal
Unscheduled Principal
Deferred Interest
Liquidations
Repurchases

Ending Pool

Balance

Count

Principal

Interest

Prior Outstanding
Plus Current Period
Less Recovered

Ending Outstanding

Servicing Fee Summary

Current Servicing Fees
Plus Fees Advanced for PPIS
Less Reduction for PPIS
Plus Delinquent Servicing Fees

Total Servicing Fees

PPIS Summary

Gross PPIS
Reduced by PPIE
Reduced by Shortfalls in Fees
Reduced by Other Amounts

PPIS Reducing Scheduled
Interest

PPIS Reducing Servicing Fee
PPIS Due Certificate

0.00

0.00
0.00

0.00

6,097,847.14

)

(1,358.38

0.00
0.00
0.00

)

(1,358.38

558,793.16

0.00

558,793.16

0.00
0.00
0.00
0.00
0.00
0.00

558,793.16

6,656,640.30

6,655,281.92

1,336,113,107.08

558,793.16

0.00

0.00
0.00

0.00

1,335,554,313.92

0.00

28,473.79

0.00
0.00
0.00

28,473.79

0.00
0.00
0.00
0.00
0.00
0.00

0.00

)

(28,473.79

6,096,488.76

Interest Not Advanced (

Current Period

)

0.00

Workout Fees
Liquidation Fees

0.00
0.00

Less Non Recovered

0.00

0.00
0.00

0.00

Advance Summary (Advance Made by Servicer)

Page 6 of 35

LB-UBS Commercial Mortgage Trust 2005-C1

Payment Date:
Prior Payment:
Next Payment:
Record Date:

17-May-05
17-May-05

15-Apr-05

17-Jun-05

29-Apr-05

Commercial Mortgage Pass-Through Certificates,

Series 2005-C1

ABN AMRO Acct: 722354.1

Statement Date:

Cash Reconciliation Summary Loan Group No. 2

Current Scheduled Interest

Interest Summary

Less Deferred Interest

Plus Gross Advance Interest

Less PPIS Reducing Scheduled Int

888,839.59

0.00
0.00

Less ASER Interest Adv Reduction

0.00

Less Other Adjustment

0.00

Total

888,839.59

Unscheduled Interest:
Prepayment Penalties

0.00

Yield Maintenance Penalties

0.00

Other Interest Proceeds

0.00

Total

0.00

Less Fees & Expenses Paid By/To Servicer

Less Fee Paid To Servicer
Less Fee Strips Paid by Servicer

Special Servicing Fees

Interest Due Serv on Advances

Recoup of Prior Advances

Misc. Fees & Expenses

Total Unscheduled Fees & Expenses
Total Interest Due Trust

Less Fees & Expenses Paid By/To Trust
Trustee Fee
Fee Strips
Misc. Fees
Interest Reserve Withholding

Plus Interest Reserve Deposit
Total

Total Interest Due Certs

Principal Summary

Remittance P&I Due Trust

Remittance P&I Due Certs

Pool Balance Summary

Beginning Pool
Scheduled Principal
Unscheduled Principal
Deferred Interest
Liquidations
Repurchases

Ending Pool

Balance

Count

Principal

Interest

Prior Outstanding
Plus Current Period
Less Recovered

Ending Outstanding

Servicing Fee Summary

Current Servicing Fees
Plus Fees Advanced for PPIS
Less Reduction for PPIS
Plus Delinquent Servicing Fees

Total Servicing Fees

PPIS Summary

Gross PPIS
Reduced by PPIE
Reduced by Shortfalls in Fees
Reduced by Other Amounts

PPIS Reducing Scheduled
Interest

PPIS Reducing Servicing Fee
PPIS Due Certificate

0.00

0.00
0.00

0.00

884,179.60

)

(189.71

0.00
0.00
0.00

)

(189.71

65,632.60

0.00

65,632.60

0.00
0.00
0.00
0.00
0.00
0.00

65,632.60

949,812.20

949,622.49

186,603,981.13

65,632.60

0.00

0.00
0.00

0.00

186,538,348.53

0.00

4,659.99

0.00
0.00
0.00

4,659.99

0.00
0.00
0.00
0.00
0.00
0.00

0.00

)

(4,659.99

883,989.89

Interest Not Advanced (

Current Period

)

0.00

Workout Fees
Liquidation Fees

0.00
0.00

Less Non Recovered

0.00

0.00
0.00

0.00

Advance Summary (Advance Made by Servicer)

Page 7 of 35

LB-UBS Commercial Mortgage Trust 2005-C1

Class

Accrued

Payment Date:
Prior Payment:
Next Payment:
Record Date:

17-May-05
17-May-05

15-Apr-05

17-Jun-05

29-Apr-05

Commercial Mortgage Pass-Through Certificates,

Series 2005-C1

ABN AMRO Acct: 722354.1

Bond Interest Reconciliation

Deductions

Allocable

Deferred &

Prior

Prepay-

Other

Additions

Interest

Credit Support

Original

Current(4)

Accrual

Int. Short-

falls Due

ment

Interest

Int erest (2)

Payment

Amount

PPIS

Int erest

Certificate

Accretion

Interest

Loss/Exp

Interest

Penalties

Proceeds (1)

Interest

Shortfalls

Certificate

Rate

Pass

Thru

Method Days

Outstanding

Remaining

Statement Date:

Distributable

Current Period

(Shortfall)/

Recovery

Int Accrual

on Prior

Shortfall (3)

7.00
1.00

0.00

A-1

173,899.53

0.00

20.00%

20.03%

30/360

4.063000000%

0.00

A-2

833,266.67

0.00

20.00%

20.03%

30/360

4.310000000%

0.00

A-3

613,575.00

0.00

20.00%

20.03%

30/360

4.545000000%

0.00

A-AB

205,560.00

0.00

20.00%

20.03%

30/360

4.568000000%

0.00

A-4

2,101,662.30

0.00

20.00%

20.03%

30/360

4.742000000%

0.00

A-1A

712,356.89

0.00

20.00%

20.03%

30/360

4.581000000%

0.00

A-J

411,589.85

0.00

13.26%

13.28%

30/360

4.806000000%

0.00

53,582.01

0.00

12.38%

12.40%

30/360

4.816000000%

0.00

107,617.12

0.00

10.63%

10.65%

30/360

4.836000000%

0.00

77,182.07

0.00

9.38%

9.40%

30/360

4.856000000%

0.00

101,746.25

0.00

7.75%

7.77%

30/360

4.924000000%

0.00

63,998.79

0.00

6.75%

6.76%

30/360

5.033000000%

0.00

73,761.89

0.00

5.63%

5.64%

30/360

5.156070714%

0.00

75,188.09

0.00

4.50%

4.51%

30/360

5.256070714%

0.00

104,928.34

0.00

3.00%

30/360

5.501070714%

0.00

22,086.68

0.00

2.63%

30/360

4.636000000%

0.00

29,450.19

0.00

2.13%

30/360

4.636000000%

0.00

14,723.16

0.00

1.88%

30/360

4.636000000%

0.00

14,727.03

0.00

1.63%

30/360

4.636000000%

0.00

14,723.16

0.00

1.38%

30/360

4.636000000%

0.00

14,723.16

0.00

1.13%

30/360

4.636000000%

0.00

66,264.58

0.00

0.00%

30/360

4.636000000%

0.00

X-CL

154,709.94

0.00

30/360

0.121921483%

0.00

X-CP

939,155.94

0.00

30/360

0.794036501%

0.00

30/360

0.000000000%

0.00

6,980,478.64

0.00

(2) Accrued - Deductions + Additions Interest

(3) Includes interest accrued on outstanding Interest Shortfalls and/or Loss Allocations. Where applicable.

Page 8 of 35

(1) Other Interest Proceeds are additional interest amounts specifically allocated to the bond(s) and used in determining the bonds Distributable Interest.

(4) Determined as follows: (A) the ending balance of all the classes less (B) the sum of (i) the ending balance of the class and (ii) the ending balance of all classes which are not subordinate to the class divided by (A).

LB-UBS Commercial Mortgage Trust 2005-C1

Payment Date:
Prior Payment:
Next Payment:
Record Date:

17-May-05
17-May-05

15-Apr-05

17-Jun-05

29-Apr-05

Commercial Mortgage Pass-Through Certificates,

Series 2005-C1

ABN AMRO Acct: 722354.1

Interest Adjustments Summary

Statement Date:

0.00

Special Servicing Fees

Workout Fees

Liquidation Fees

Legal Fees

0.00

Misc. Fees & Expenses Paid by/to Servicer

Interest Paid to Servicer on Outstanding Advances

0.00

ASER Interest Advance Reduction

Interest Not Advanced (Current Period)

Recoup of Prior Advances by Servicer

0.00

Servicing Fees Paid Servicer on Loans Not Advanced

Misc. Fees & Expenses Paid by Trust

0.00

Shortfall Due to Rate Modification

Total Shortfall Allocated to the Bonds

Total Interest Adjustment to the Bonds

0.00

Shortfall Allocated to the Bonds:

Excess Allocated to the Bonds:

Other Interest Proceeds Due the Bonds

Yield Maintenance Penalties Due the Bonds

Prepayment Penalties Due the Bonds

Recovered ASER Interest Due the Bonds

Recovered Interest Due the Bonds

Less Total Shortfall Allocated to the Bonds

Total Excess Allocated to the Bonds

0.00

0.00

Total Excess Allocated to the Bonds

0.00

0.00

Aggregate Interest Adjustment Allocated to the Bonds

0.00

Prepayment Interest Excess Due the Bonds

0.00

ARD Excess Interest

0.00

Net Prepayment Int. Shortfalls Allocated to the Bonds

Other Interest Loss

Interest Income

0.00

Page 9 of 35

LB-UBS Commercial Mortgage Trust 2005-C1

Payment Date:
Prior Payment:
Next Payment:
Record Date:

17-May-05
17-May-05

15-Apr-05

17-Jun-05

29-Apr-05

Commercial Mortgage Pass-Through Certificates,

Series 2005-C1

Asset-Backed Facts ~ 15 Month Historical Loan Status Summary

Distribution

Date

Delinq 1 Month

Delinq 2 Months

Delinq 3+ Months

Foreclosure

REO

Modifications

Specially Serviced

Bankruptcy

# Balance

Delinquency Aging Categories

Special Event Categories (1)

Statement Date:

ABN AMRO Acct: 722354.1

0.00%

17-May-05

0.00%

15-Apr-05

0.00%

17-Mar-05

0.00%

17-Feb-05

(1) Note: Modification, Specially Serviced & Bankruptcy Totals are Included in the Appropriate Delinquency Aging Category

Page 10 of 35

LB-UBS Commercial Mortgage Trust 2005-C1

Payment Date:
Prior Payment:
Next Payment:
Record Date:

17-May-05
17-May-05

15-Apr-05

17-Jun-05

29-Apr-05

Commercial Mortgage Pass-Through Certificates,

Series 2005-C1

Asset-Backed Facts ~ 15 Month Historical Loan Status Summary

Distribution

Date

Delinq 1 Month

Delinq 2 Months

Delinq 3+ Months

Foreclosure

REO

Modifications

Specially Serviced

Bankruptcy

# Balance

Delinquency Aging Categories

Special Event Categories (1)

Statement Date:

Loan Group No. 1

ABN AMRO Acct: 722354.1

0.00%

17-May-05

0.00%

15-Apr-05

0.00%

17-Mar-05

0.00%

17-Feb-05

(1) Note: Modification, Specially Serviced & Bankruptcy Totals are Included in the Appropriate Delinquency Aging Category

Page 11 of 35

LB-UBS Commercial Mortgage Trust 2005-C1

Payment Date:
Prior Payment:
Next Payment:
Record Date:

17-May-05
17-May-05

15-Apr-05

17-Jun-05

29-Apr-05

Commercial Mortgage Pass-Through Certificates,

Series 2005-C1

Asset-Backed Facts ~ 15 Month Historical Loan Status Summary

Distribution

Date

Delinq 1 Month

Delinq 2 Months

Delinq 3+ Months

Foreclosure

REO

Modifications

Specially Serviced

Bankruptcy

# Balance

Delinquency Aging Categories

Special Event Categories (1)

Statement Date:

Loan Group No. 2

ABN AMRO Acct: 722354.1

0.00%

17-May-05

0.00%

15-Apr-05

0.00%

17-Mar-05

0.00%

17-Feb-05

(1) Note: Modification, Specially Serviced & Bankruptcy Totals are Included in the Appropriate Delinquency Aging Category

Page 12 of 35

LB-UBS Commercial Mortgage Trust 2005-C1

Payment Date:
Prior Payment:
Next Payment:
Record Date:

17-May-05
17-May-05

15-Apr-05

17-Jun-05

29-Apr-05

Commercial Mortgage Pass-Through Certificates,

Asset-Backed Facts ~ 15 Month Historical Payoff/Loss Summary

Distribution

Date

Ending Pool (1)

Payoffs(2)

Penalties

Appraisal Reduct. (2)

Liquidations (2)

Realized Losses (2)

Remaining Term

Curr Weighted Avg.

# Balance

# Amount

# Balance

# Amount

Life

Coupon Remit

Statement Date:

Amort

ABN AMRO Acct: 722354.1

Series 2005-C1

17-May-05

100.00%

1,522,092,662

99.84%

0.00%

100

200

5.53%

5.50%

15-Apr-05

100.00%

1,522,717,088

99.88%

0.00%

101

200

5.69%

5.66%

17-Mar-05

100.00%

1,523,276,709

99.92%

0.00%

102

201

5.53%

5.50%

17-Feb-05

100.00%

1,524,019,607

99.97%

0.00%

103

202

5.53%

5.50%

(1) Percentage based on pool as of cutoff. (2) Percentage based on pool as of beginning of period.

Page 13 of 35

LB-UBS Commercial Mortgage Trust 2005-C1

Payment Date:
Prior Payment:
Next Payment:
Record Date:

17-May-05
17-May-05

15-Apr-05

17-Jun-05

29-Apr-05

Commercial Mortgage Pass-Through Certificates,

Asset-Backed Facts ~ 15 Month Historical Payoff/Loss Summary

Distribution

Date

Ending Pool (1)

Payoffs(2)

Penalties

Appraisal Reduct. (2)

Liquidations (2)

Realized Losses (2)

Remaining Term

Curr Weighted Avg.

# Balance

# Amount

# Balance

# Amount

Life

Coupon Remit

Statement Date:

Loan Group No. 1

Amort

ABN AMRO Acct: 722354.1

Series 2005-C1

17-May-05

79.78%

1,335,554,314

87.60%

0.00%

160

179

5.50%

5.48%

15-Apr-05

79.78%

1,336,113,107

87.64%

0.00%

161

180

5.66%

5.63%

17-Mar-05

79.78%

1,336,616,945

87.67%

0.00%

162

181

5.35%

5.32%

17-Feb-05

79.78%

1,337,275,698

87.72%

0.00%

163

182

5.50%

5.48%

(1) Percentage based on pool as of cutoff. (2) Percentage based on pool as of beginning of period.

Page 14 of 35

LB-UBS Commercial Mortgage Trust 2005-C1

Payment Date:
Prior Payment:
Next Payment:
Record Date:

17-May-05
17-May-05

15-Apr-05

17-Jun-05

29-Apr-05

Commercial Mortgage Pass-Through Certificates,

Asset-Backed Facts ~ 15 Month Historical Payoff/Loss Summary

Distribution

Date

Ending Pool (1)

Payoffs(2)

Penalties

Appraisal Reduct. (2)

Liquidations (2)

Realized Losses (2)

Remaining Term

Curr Weighted Avg.

# Balance

# Amount

# Balance

# Amount

Life

Coupon Remit

Statement Date:

Loan Group No. 2

Amort

ABN AMRO Acct: 722354.1

Series 2005-C1

17-May-05

20.22%

186,538,349

12.24%

0.00%

220

5.72%

5.68%

15-Apr-05

20.22%

186,603,981

12.24%

0.00%

221

5.91%

5.88%

17-Mar-05

20.22%

186,659,764

12.24%

0.00%

221

5.53%

5.49%

17-Feb-05

20.22%

186,743,909

12.25%

0.00%

222

5.72%

5.68%

(1) Percentage based on pool as of cutoff. (2) Percentage based on pool as of beginning of period.

Page 15 of 35

LB-UBS Commercial Mortgage Trust 2005-C1

Mortgage Loan Characteristics

ABN AMRO Acct: 722354.1

Series 2005-C1

Commercial Mortgage Pass-Through Certificates,

29-Apr-05

17-Jun-05

15-Apr-05

17-May-05

Record Date:

Next Payment:

Prior Payment:

Payment Date:

Statement Date:

Distribution of Mortgage Interest Rates

Distribution of Principal Balances

Distribution of Remaining Term (Balloon)

Distribution of Remaining Term (Fully Amortizing)

Page 16 of 35

Current Scheduled

Balance

# of

Loans

Scheduled

Balance

% of

Balance

Weighted Average

Term Coupon PFY DSCR

0.00

0 to

1,000,000

18,113,989

1.19

114

5.81

0.00

1,000,000 to

2,000,000

23,335,415

1.53

114

5.82

0.00

2,000,000 to

3,000,000

44,968,239

2.95

108

5.52

0.00

3,000,000 to

4,000,000

39,538,116

2.60

105

5.55

0.00

4,000,000 to

5,000,000

16,772,763

1.10

116

5.64

0.00

5,000,000 to

6,000,000

32,186,710

2.11

150

6.29

0.00

6,000,000 to

7,000,000

14,567,818

0.96

116

5.45

0.00

7,000,000 to

8,000,000

51,162,969

3.36

115

5.75

0.00

8,000,000 to

9,000,000

0.00

9,000,000 to 10,000,000

10,369,083

0.68

114

5.56

0.00

10,000,000 to 11,000,000

22,645,776

1.49

105

5.62

0.00

11,000,000 to 12,000,000

25,600,000

1.68

5.70

0.00

12,000,000 to 13,000,000

0.00

13,000,000 to 14,000,000

14,500,000

0.95

117

5.39

0.00

14,000,000 to 15,000,000

374,412,812

24.60

5.54

0.00

15,000,000 to 40,000,000

180,818,973

11.88

5.45

0.00

40,000,000 to 65,000,000

249,700,000

16.41

5.12

0.00

65,000,000 to 90,000,000

113,400,000

7.45

115

5.04

0.00

90,000,000 to 115,000,000

290,000,000

19.05

114

5.92

0.00

115,000,000 &

Above

160,000,000

1,139,684

1,522,092,662

100.00

Average Schedule Balance
Maximum Schedule Balance
Minimum Schedule Balance

17,102,165

Current Mortgage

Interest Rate

# of

Loans

Scheduled

Balance

% of

Balance

Weighted Average

Term Coupon PFY DSCR

46,400,000

3.05

4.62

0.00

4.500%

4.750%

123,500,000

8.11

4.92

0.00

4.751%

5.000%

282,702,444

18.57

5.12

0.00

5.001%

5.250%

280,509,617

18.43

113

5.37

0.00

5.251%

5.500%

192,602,604

12.65

110

5.60

0.00

5.501%

5.750%

291,237,224

19.13

112

5.84

0.00

5.751%

6.000%

286,839,236

18.85

100

6.04

0.00

6.001%

6.250%

0.00

6.251%

6.500%

7,935,988

0.52

126

6.64

0.00

6.501%

6.750%

0.00

6.751%

7.000%

10,365,550

0.68

173

7.07

0.00

7.001%

7.250%

0.00

7.251%

7.500%

0.00

7.501%

7.750%

0.00

7.751%

8.000%

0.00

8.001%

Above

1,522,092,662

Minimum Mortgage Interest Rate
Maximum Mortgage Interest Rate

100.00

4.618%
7.070%

Fully Amortizing

Mortgage Loans

# of

Loans

Scheduled

Balance

% of

Balance

Weighted Average

Term Coupon PFY DSCR

0.00

120

33,302,401

2.19

173

5.89

0.00

121

180

0.00

181

240

0.00

241

Above

178

172

33,302,401

Minimum Remaining Term
Maximum Remaining Term

2.19

Balloon

Mortgage Loans

# of

Loans

Scheduled

Balance

% of

Balance

Weighted Average

Term Coupon PFY DSCR

0.00

317,614,480

20.87

5.43

0.00

1,127,030,052

74.04

108

5.53

0.00

120

44,145,730

2.90

163

5.96

0.00

121

180

0.00

181

240

0.00

241

& Above

174

1,488,790,261

Minimum Remaining Term
Maximum Remaining Term

97.81

LB-UBS Commercial Mortgage Trust 2005-C1

Mortgage Loan Characteristics

ABN AMRO Acct: 722354.1

Series 2005-C1

Commercial Mortgage Pass-Through Certificates,

29-Apr-05

17-Jun-05

15-Apr-05

17-May-05

Record Date:

Next Payment:

Prior Payment:

Payment Date:

Statement Date:

Geographic Distribution

Distribution of DSCR (PFY)

Distribution of DSCR (Cutoff)

Page 17 of 35

Debt Service

Coverage Ratio

# of

Loans

Scheduled

Balance

% of

Balance

WAMM WAC PFY DSCR

0.00

Less than zero

0.00

0.000 0.249

0.00

0.250 0.499

0.00

0.500 0.749

0.00

0.750 0.999

0.00

1.000 1.249

0.00

1.250 1.499

0.00

1.500 1.749

0.00

1.750 1.999

0.00

2.000 2.249

0.00

2.250 2.499

0.00

2.500 2.749

0.00

2.750 2.999

0.00

3.000 3.249

0.00

3.250 & Above

1,522,092,662

100.00

100

5.53

0.00

Unknown

0.000
0.000

1,522,092,662

100.00

Minimum DSCR

Maximum DSCR

Debt Service

Coverage Ratio

# of

Loans

Scheduled

Balance

% of

Balance

WAMM WAC PFY DSCR

0.00

Less than zero

0.00

0.000 0.249

0.00

0.250 0.499

0.00

0.500 0.749

0.00

0.750 0.999

268,305,855

17.63

5.71

0.00

1.000 1.249

716,405,345

47.07

113

5.77

0.00

1.250 1.499

242,275,404

15.92

5.30

0.00

1.500 1.749

50,306,058

3.31

5.24

0.00

1.750 1.999

113,400,000

7.45

115

5.04

0.00

2.000 2.249

85,000,000

5.58

4.91

0.00

2.250 2.499

0.00

2.500 2.749

0.00

2.750 2.999

46,400,000

3.05

4.62

0.00

3.000 3.249

0.00

3.250 & Above

3.030

1.000

1,522,092,662 100.00

Minimum DSCR

Maximum DSCR

Geographic

Location

# of

Loans

Scheduled

Balance

% of

Balance

WAMM WAC PFY DSCR

California

305,367,826

20.06

5.65

0.00

New York

253,086,765

16.63

5.70

0.00

Texas

233,401,712

15.33

108

5.32

0.00

Multiple States

175,000,000

11.50

5.05

0.00

Florida

133,261,060

8.76

106

5.53

0.00

Hawaii

130,000,000

8.54

115

5.80

0.00

Pennsylvania

70,931,441

4.66

123

5.85

0.00

Maryland

48,869,348

3.21

4.68

0.00

Utah

38,639,424

2.54

116

5.50

0.00

Colorado

26,038,977

1.71

5.82

0.00

Virginia

22,055,619

1.45

132

6.01

0.00

Michigan

21,550,869

1.42

116

5.56

0.00

Ohio

10,245,802

0.67

116

5.83

0.00

Massachusetts

8,700,000

0.57

174

6.08

0.00

North Carolina

8,626,616

0.57

5.41

0.00

Tennessee

8,481,492

0.56

116

5.67

0.00

Oklahoma

7,261,124

0.48

115

5.54

0.00

Louisiana

6,107,200

0.40

174

6.05

0.00

Georgia

3,500,000

0.23

116

5.42

0.00

Illinois

3,139,046

0.21

117

5.46

0.00

Minnesota

1,976,594

0.13

5.30

0.00

West Virginia

1,766,501

0.12

173

7.07

0.00

Alabama

1,674,325

0.11

117

5.63

0.00

Kentucky

1,271,239

0.08

178

6.57

0.00

Indiana

1,139,684

0.07

116

5.76

0.00

100.00

1,522,092,662

LB-UBS Commercial Mortgage Trust 2005-C1

Mortgage Loan Characteristics

ABN AMRO Acct: 722354.1

Series 2005-C1

Commercial Mortgage Pass-Through Certificates,

29-Apr-05

17-Jun-05

15-Apr-05

17-May-05

Record Date:

Next Payment:

Prior Payment:

Payment Date:

Statement Date:

Distribution of Loan Seasoning

Distribution of Property Types

Distribution of Year Loans Maturing

Distribution of Amortization Type

Page 18 of 35

Property Types

# of

Loans

Scheduled

Balance

% of

Balance

WAMM WAC PFY DSCR

Retail

582,647,014

38.28

109

5.45

0.00

Office

452,141,349

29.71

107

5.54

0.00

Multifamily

235,488,349

15.47

5.79

0.00

Self storage

103,000,000

6.77

5.29

0.00

Undefined

89,940,632

5.91

5.43

0.00

Industrial

55,625,319

3.65

125

5.73

0.00

Mobile home park

3,250,000

0.21

5.48

0.00

1,522,092,662

100.00

Amortization Type

# of

Loans

Scheduled

Balance

% of

Balance

WAMM WAC PFY DSCR

AmortizingBalloon

374,600,308

24.61

105

5.61

0.00

ARD

26,592,753

1.75

174

6.05

0.00

Full Amortizing

33,302,401

2.19

173

5.89

0.00

IO Maturity Balloon

612,300,000

40.23

5.36

0.00

IO/Amortizing/Balloon

475,297,200

31.23

5.63

0.00

1,522,092,662

100.00

Number of Months

# of

Loans

Scheduled

Balance

% of

Balance

WAMM WAC PFY DSCR

1,510,455,874

99.24

100

0.00

5.52

0.00

11,636,789

0.76

174

0.00

7.02

0.00

108

0.00

109

120

0.00

121

1,522,092,662

100.00

Year

# of

Loans

Scheduled

Balance

% of

Balance

WAMM WAC PFY DSCR

0.00

2005

0.00

2006

0.00

2007

0.00

2008

156,602,444

10.29

5.72

0.00

2009

162,988,629

10.71

5.15

0.00

2010

91,574,228

6.02

5.16

0.00

2011

103,650,000

6.81

5.02

0.00

2012

0.00

2013

629,439,150

41.35

113

5.61

0.00

2014

300,390,080

19.74

116

5.64

0.00

2015

77,448,131

5.09

167

5.93

0.00

2016 & Greater

100.00

1,522,092,662

LB-UBS Commercial Mortgage Trust 2005-C1

Payment Date:
Prior Payment:
Next Payment:
Record Date:

17-May-05
17-May-05

15-Apr-05

17-Jun-05

29-Apr-05

Commercial Mortgage Pass-Through Certificates,

Series 2005-C1

ABN AMRO Acct: 722354.1

Delinquent Loan Detail

Disclosure

Control #

Paid
Thru
Date

Current P&I

Advance

Outst anding

P& I

Advances**

Out. Property

Protection
Advances

Loan Status

Code (1)

Special

Servicer

Transfer Date

Foreclosure

Date

Bankruptcy

Date

REO

Date

Statement Date:

Total

Page 19 of 35

A. In Grace Period

1. Delinq. 1 month

2. Delinq. 2 months

3. Delinquent 3 + months

4. Performing Matured Balloon

** Outstanding P&I Advances include the current period P&I Advances and may include Servicer and Trust Advances.

7. Foreclosure

9. REO

B. Late Payment but < 1 month delinq.

5. Non Performing Matured Balloon

LB-UBS Commercial Mortgage Trust 2005-C1

Payment Date:
Prior Payment:
Next Payment:
Record Date:

17-May-05
17-May-05

15-Apr-05

17-Jun-05

29-Apr-05

Commercial Mortgage Pass-Through Certificates,

Series 2005-C1

ABN AMRO Acct: 722354.1

Loan Level Detail

Disclosure

Control #

Group

Property

Type

Maturity

Date

PFY

DSCR

Operating
Statement

Date

Geo.

Location

Ending

Principal

Balance

Note
Rate

Scheduled

P&I

Prepayment

Amount

Prepayment

Date

Loan

Status

Code (1)

Statement Date:

6.02%

11-Nov-14

LUBS5C1A

Office

0.00

160,000,000

802,667

5.80%

11-Dec-14

LUBS5C1A

Retail

0.00

130,000,000

628,333

5.04%

1-Dec-14

LUBS5C1A

Retail

0.00

113,400,000

476,280

5.19%

11-May-10

LUBS5C1A

Self storage

0.00

90,000,000

389,250

4.91%

11-Jan-12

LUBS5C1A

Retail

0.00

85,000,000

347,792

5.28%

11-Apr-14

LUBS5C1A

Office

0.00

74,700,000

328,420

6.08%

11-Dec-09

LUBS5C1A

Multifamily

0.00

48,950,000

248,013

4.62%

11-Nov-11

LUBS5C1A

Office

0.00

46,400,000

178,543

5.20%

11-Dec-09

LUBS5C1A

0.00

44,636,459

268,203

5.91%

11-Jan-15

LUBS5C1B

Multifamily

0.00

40,832,514

243,317

5.50%

11-Jan-15

LUBS5C1A

0.00

38,639,424

268,276

4.94%

11-Feb-10

LUBS5C1A

Office

0.00

38,500,000

158,620

5.28%

11-Apr-14

LUBS5C1A

Retail

0.00

38,000,000

167,068

5.66%

11-Jan-15

LUBS5C1A

Office

0.00

33,854,402

196,368

5.89%

11-Dec-14

LUBS5C1A

Retail

0.00

29,851,004

177,749

5.78%

11-Jan-15

LUBS5C1A

Office

0.00

28,750,000

138,479

5.88%

11-Sep-11

LUBS5C1B

Multifamily

0.00

22,000,000

107,800

5.28%

11-Sep-19

LUBS5C1A

Office

0.00

21,665,613

179,847

5.53%

11-Nov-11

LUBS5C1A

Retail

0.00

19,374,228

111,086

6.08%

11-Dec-09

LUBS5C1B

Multifamily

0.00

18,700,000

94,747

5.64%

11-Jan-15

LUBS5C1A

Office

0.00

18,500,000

86,950

5.09%

11-Jan-10

LUBS5C1B

Multifamily

0.00

17,700,000

75,078

6.08%

11-Dec-09

LUBS5C1B

Multifamily

0.00

16,650,000

84,360

Page 20 of 35

* NOI and DSCR, if available and reportable under the terms of the trust agreement, are based on information obtained from the related borrower, and no other party to the agreement shall be held liable for the accuracy or methodology used to

determine such figures.

(1) Legend:

A. In Grace Period

B. Late Payment but < 1 month delinq

1. Delinquent 1 month
2. Delinquent 2 months

3. Delinquent 3+ months

4. Performing Matured Balloon

7. Foreclosure

9. REO

5. Non Performing Matured Ballon

LB-UBS Commercial Mortgage Trust 2005-C1

Payment Date:
Prior Payment:
Next Payment:
Record Date:

17-May-05
17-May-05

15-Apr-05

17-Jun-05

29-Apr-05

Commercial Mortgage Pass-Through Certificates,

Series 2005-C1

ABN AMRO Acct: 722354.1

Loan Level Detail

Disclosure

Control #

Group

Property

Type

Maturity

Date

PFY

DSCR

Operating
Statement

Date

Geo.

Location

Ending

Principal

Balance

Note
Rate

Scheduled

P&I

Prepayment

Amount

Prepayment

Date

Loan

Status

Code (1)

Statement Date:

5.50%

11-Jan-15

LUBS5C1A

Industrial

0.00

16,228,142

92,550

5.52%

11-Jan-15

LUBS5C1A

Industrial

0.00

16,000,000

73,600

5.39%

11-Feb-15

LUBS5C1B

Multifamily

0.00

14,500,000

65,129

5.96%

11-Dec-14

LUBS5C1A

Self storage

0.00

13,000,000

64,567

5.43%

11-Jan-10

LUBS5C1A

Retail

0.00

12,600,000

57,015

5.70%

11-Mar-16

LUBS5C1A

Industrial

0.00

11,445,776

72,000

5.53%

11-Jan-12

LUBS5C1A

Retail

0.00

11,200,000

51,613

5.56%

11-Nov-14

LUBS5C1A

Retail

0.00

10,369,083

59,648

6.08%

11-Dec-09

LUBS5C1B

Multifamily

0.00

8,900,000

45,093

6.08%

11-Nov-19

LUBS5C1A

Retail

0.00

8,700,000

44,080

6.08%

11-Nov-19

LUBS5C1A

Retail

0.00

8,500,000

43,067

5.66%

11-Jan-15

LUBS5C1A

Office

0.00

8,500,000

40,092

5.50%

11-Jan-15

LUBS5C1A

Retail

0.00

8,362,969

47,694

5.03%

11-Dec-09

LUBS5C1B

Multifamily

0.00

8,200,000

34,372

5.41%

11-Jan-15

LUBS5C1B

Multifamily

0.00

7,300,000

32,911

5.50%

11-Jan-15

LUBS5C1A

Retail

0.00

7,267,818

41,449

6.65%

11-Jan-15

LUBS5C1A

0.00

6,664,749

45,869

7.07%

10-Oct-19

LUBS5C1C

Industrial

0.00

6,536,833

60,360

5.59%

11-Nov-14

LUBS5C1A

Retail

0.00

6,557,927

37,848

6.04%

11-Nov-19

LUBS5C1A

Retail

0.00

6,320,000

31,811

6.05%

11-Nov-19

LUBS5C1A

Retail

0.00

6,107,200

30,790

5.65%

11-Jan-15

LUBS5C1A

Office

0.00

5,974,282

34,634

5.50%

11-Jan-15

LUBS5C1A

Retail

0.00

5,475,753

31,228

Page 21 of 35

determine such figures.

(1) Legend:

A. In Grace Period

B. Late Payment but < 1 month delinq

1. Delinquent 1 month
2. Delinquent 2 months

3. Delinquent 3+ months

4. Performing Matured Balloon

7. Foreclosure

9. REO

5. Non Performing Matured Ballon

LB-UBS Commercial Mortgage Trust 2005-C1

Payment Date:
Prior Payment:
Next Payment:
Record Date:

17-May-05
17-May-05

15-Apr-05

17-Jun-05

29-Apr-05

Commercial Mortgage Pass-Through Certificates,

Series 2005-C1

ABN AMRO Acct: 722354.1

Loan Level Detail

Disclosure

Control #

Group

Property

Type

Maturity

Date

PFY

DSCR

Operating
Statement

Date

Geo.

Location

Ending

Principal

Balance

Note
Rate

Scheduled

P&I

Prepayment

Amount

Prepayment

Date

Loan

Status

Code (1)

Statement Date:

5.76%

11-Dec-14

LUBS5C1A

Office

0.00

5,322,728

31,255

5.54%

11-Dec-14

LUBS5C1A

Retail

0.00

4,933,586

28,287

5.15%

11-Nov-09

LUBS5C1B

Multifamily

0.00

4,865,985

26,755

5.75%

11-Jan-15

LUBS5C1B

Multifamily

0.00

4,381,492

25,677

5.90%

11-Sep-14

LUBS5C1B

Multifamily

0.00

4,348,996

28,081

5.40%

11-Dec-14

LUBS5C1A

Retail

0.00

4,336,132

24,483

5.55%

11-Nov-14

LUBS5C1B

Multifamily

0.00

4,290,000

19,841

5.63%

11-Nov-12

LUBS5C1A

Office

0.00

4,200,000

19,705

5.50%

11-Jan-15

LUBS5C1A

Retail

0.00

4,081,925

23,279

5.58%

11-Feb-15

LUBS5C1A

Office

0.00

4,100,000

19,065

5.30%

11-Jan-15

LUBS5C1A

Retail

0.00

3,882,154

21,657

5.11%

11-Dec-09

LUBS5C1A

Retail

0.00

3,900,000

16,608

5.81%

11-Sep-11

LUBS5C1B

Multifamily

0.00

3,800,000

18,398

5.54%

11-Dec-14

LUBS5C1A

Retail

0.00

3,779,763

21,671

5.42%

11-Jan-15

LUBS5C1A

Retail

0.00

3,500,000

15,808

5.67%

11-Dec-14

LUBS5C1A

Retail

0.00

3,481,835

20,248

5.54%

11-Dec-14

LUBS5C1A

Retail

0.00

3,481,361

19,961

5.60%

11-Nov-14

LUBS5C1B

Multifamily

0.00

3,300,000

15,400

5.56%

11-Jan-15

LUBS5C1A

Retail

0.00

3,282,573

19,617

5.48%

11-Jan-12

LUBS5C1A

Mobile home park

0.00

3,250,000

14,842

5.46%

11-Feb-15

LUBS5C1A

Retail

0.00

3,139,046

17,806

5.49%

11-Jan-15

LUBS5C1A

Retail

0.00

3,098,753

17,653

5.86%

11-Nov-19

LUBS5C1A

Retail

0.00

3,072,753

19,709

Page 22 of 35

determine such figures.

(1) Legend:

A. In Grace Period

B. Late Payment but < 1 month delinq

1. Delinquent 1 month
2. Delinquent 2 months

3. Delinquent 3+ months

4. Performing Matured Balloon

7. Foreclosure

9. REO

5. Non Performing Matured Ballon

LB-UBS Commercial Mortgage Trust 2005-C1

Payment Date:
Prior Payment:
Next Payment:
Record Date:

17-May-05
17-May-05

15-Apr-05

17-Jun-05

29-Apr-05

Commercial Mortgage Pass-Through Certificates,

Series 2005-C1

ABN AMRO Acct: 722354.1

Loan Level Detail

Disclosure

Control #

Group

Property

Type

Maturity

Date

PFY

DSCR

Operating
Statement

Date

Geo.

Location

Ending

Principal

Balance

Note
Rate

Scheduled

P&I

Prepayment

Amount

Prepayment

Date

Loan

Status

Code (1)

Statement Date:

5.66%

11-Jan-15

LUBS5C1B

Multifamily

0.00

2,987,165

17,336

5.51%

11-Dec-14

LUBS5C1A

Retail

0.00

2,983,929

17,053

5.79%

11-Jan-15

LUBS5C1A

Retail

0.00

2,937,684

17,290

5.43%

11-Nov-14

LUBS5C1A

Industrial

0.00

2,731,914

15,494

5.55%

11-Nov-14

LUBS5C1A

Industrial

0.00

2,682,653

15,415

5.88%

11-Jul-14

LUBS5C1A

Retail

0.00

2,469,348

15,413

5.80%

11-Dec-14

LUBS5C1A

Retail

0.00

2,268,470

13,378

6.06%

11-Feb-10

LUBS5C1A

Retail

0.00

2,212,036

13,390

7.07%

10-Oct-19

LUBS5C1D

Retail

0.00

2,062,216

19,042

5.50%

11-Jan-15

LUBS5C1A

Retail

0.00

1,991,183

11,356

5.30%

11-Jun-10

LUBS5C1A

Retail

0.00

1,976,594

13,533

5.41%

11-Jan-15

LUBS5C1B

Multifamily

0.00

1,900,000

8,566

5.45%

11-Nov-14

LUBS5C1B

Multifamily

0.00

1,882,197

11,611

6.08%

11-Dec-09

LUBS5C1A

Retail

0.00

1,800,000

9,120

7.07%

10-Oct-19

LUBS5C1E

Retail

0.00

1,766,501

16,311

5.63%

11-Feb-15

LUBS5C1A

Office

0.00

1,674,325

9,676

5.88%

11-Jan-15

LUBS5C1A

Retail

0.00

1,444,043

8,577

6.57%

10-Mar-20

LUBS5C1F

Retail

0.00

1,271,239

11,196

5.55%

11-Dec-14

LUBS5C1A

Retail

0.00

1,268,223

7,279

5.76%

11-Jan-15

LUBS5C1A

Retail

0.00

1,139,684

8,081

1,522,092,662

7,639,587

Page 23 of 35

determine such figures.

(1) Legend:

A. In Grace Period

B. Late Payment but < 1 month delinq

1. Delinquent 1 month
2. Delinquent 2 months

3. Delinquent 3+ months

4. Performing Matured Balloon

7. Foreclosure

9. REO

5. Non Performing Matured Ballon

LB-UBS Commercial Mortgage Trust 2005-C1

Payment Date:
Prior Payment:
Next Payment:
Record Date:

17-May-05
17-May-05

15-Apr-05

17-Jun-05

29-Apr-05

Commercial Mortgage Pass-Through Certificates,

Series 2005-C1

ABN AMRO Acct: 722354.1

Realized Loss Detail

Period

Disclosure

Control #

Appraisal

Date

Appraisal

Value

Beginning

Scheduled

Balance

Gross

Proceeds

Gross Proceeds

as a % of

Sched. Balance

Aggregate

Liquidation

Expenses *

Net

Liquidation

Proceeds

Net Proceeds

as a % of

Sched. Balance

Realized

Loss

Statement Date:

Current Total

Cumulative

Page 24 of 35

* Aggregate liquidation expenses also include outstanding P&I advances and unpaid servicing fees, unpaid trustee fees, etc..

LB-UBS Commercial Mortgage Trust 2005-C1

Payment Date:
Prior Payment:
Next Payment:
Record Date:

17-May-05
17-May-05

15-Apr-05

17-Jun-05

29-Apr-05

Commercial Mortgage Pass-Through Certificates,

Series 2005-C1

Historical Collateral Level REO Report

Property

Type

Statement Date:

State

Actual

Balance

Scheduled

Balance

Recent

Appraisal

Value

Appraisal

Reduction

Amount

Date

Liquidated

Liquidation

Proceeds

Liquidation

Expenses

Realized

Loss

Disclosure

Control #

REO

Date

City

Appraisal

Date

ABN AMRO Acct: 722354.1

Page 25 of 35

LB-UBS Commercial Mortgage Trust 2005-C1

Payment Date:
Prior Payment:
Next Payment:
Record Date:

17-May-05
17-May-05

15-Apr-05

17-Jun-05

29-Apr-05

Commercial Mortgage Pass-Through Certificates,

Series 2005-C1

ABN AMRO Acct: 722354.1

ASER Detail

Period

Disclosure

Control #

Appraisal

Date

Appraisal

Value

Beginning
Scheduled

Balance

ASER

Prin

Balance

ASER Prin

ADV Reduction

Amount

Current

Appraisal

Reduction Date

Current Appraisal

Reduction

Amount

Cumulative

ASER

Amount

Statement Date:

ASER Int

ADV Reduction

Amount

Page 26 of 35

LB-UBS Commercial Mortgage Trust 2005-C1

Payment Date:
Prior Payment:
Next Payment:
Record Date:

17-May-05
17-May-05

15-Apr-05

17-Jun-05

29-Apr-05

Commercial Mortgage Pass-Through Certificates,

Series 2005-C1

ABN AMRO Acct: 722354.1

Appraisal Reduction Detail

Disclosure

Control#

Appraisal

Red. Date

Scheduled

Balance

ASER

Note

Rate

Maturity

Date

Property

Type

Geographic

Location

Appraisal

Value Date

DSCR

Statement Date:

Remaining Term

Life

ARA

Amount

Current P&I

Advance

Page 27 of 35

LB-UBS Commercial Mortgage Trust 2005-C1

Payment Date:
Prior Payment:
Next Payment:
Record Date:

17-May-05
17-May-05

15-Apr-05

17-Jun-05

29-Apr-05

Commercial Mortgage Pass-Through Certificates,

Series 2005-C1

ABN AMRO Acct: 722354.1

Modified Loan Detail

Disclosure

Control #

Modification

Date

Cutoff

Maturity

Date

Modification

Description

Modified

Maturity

Date

Statement Date:

Page 28 of 35

LB-UBS Commercial Mortgage Trust 2005-C1

Payment Date:
Prior Payment:
Next Payment:
Record Date:

17-May-05
17-May-05

15-Apr-05

17-Jun-05

29-Apr-05

Commercial Mortgage Pass-Through Certificates,

Series 2005-C1

ABN AMRO Acct: 722354.1

Historical Collateral Level Prepayment Report

Disclosure

Control #

Payoff

Period

Initial

Balance

Type

Payoff

Amount

Penalty

Amount

Prepayment

Date

Maturity

Date

Property

Type

Geographic

Location

Statement Date:

Cumulative

Current

Page 29 of 35

LB-UBS Commercial Mortgage Trust 2005-C1

Payment Date:
Prior Payment:
Next Payment:
Record Date:

17-May-05
17-May-05

15-Apr-05

17-Jun-05

29-Apr-05

Commercial Mortgage Pass-Through Certificates,

Series 2005-C1

ABN AMRO Acct: 722354.1

Specially Serviced (Part I) ~ Loan Detail (End of Period)

Disclosure

Control #

Servicing

Xfer Date

Balance

Note

Rate

Maturity

Date

Remaining

Property

Type

Geo.

Location

NOI

DSCR

NOI
Date

Schedule

Actual

Life

Statement Date:

Loan

Status

Code(1)

Page 30 of 35

(1) Legend:

A. P&I Adv - in Grace Period

B. P&I Adv - < one month delinq

1. P&I Adv - delinquent 1 month

2. P&I Adv - delinquent 2 months

3. P&I Adv - delinquent 3+ months

4. Mat. Balloon/Assumed P&I

7. Foreclosure

9. REO

5. Non Performing Mat. Balloon

LB-UBS Commercial Mortgage Trust 2005-C1

Payment Date:
Prior Payment:
Next Payment:
Record Date:

17-May-05
17-May-05

15-Apr-05

17-Jun-05

29-Apr-05

Commercial Mortgage Pass-Through Certificates,

Series 2005-C1

ABN AMRO Acct: 722354.1

Specially Serviced Loan Detail (Part II) ~ Servicer Comments (End of Period)

Disclosure

Control #

Resolution

Strategy

Comments

Statement Date:

Page 31 of 35

LB-UBS Commercial Mortgage Trust 2005-C1

Payment Date:
Prior Payment:
Next Payment:
Record Date:

17-May-05
17-May-05

15-Apr-05

17-Jun-05

29-Apr-05

Commercial Mortgage Pass-Through Certificates,

Series 2005-C1

ABN AMRO Acct: 722354.1

Maturity Extension Summary

Statement Date:

Loans which have had their Maturity Dates extended

Stated Principal Balance outstanding:
Weighted Average Extension Period:

Loans in the process of having their Maturity Dates extended

Stated Principal Balance outstanding:
Weighted Average Extension Period:

Loans in the process of having their Maturity Dates further extended

Cutoff Principal Balance:
Weighted Average Extension Period:

Loans paid-off that did experience Maturity Date extensions

Cutoff Principal Balance:
Weighted Average Extension Period:

0.00

Number of Loans:

0.00

Number of Loans:

0.00

Loans paid-off that did not experience Maturity Date extensions

Number of Loans:
Cutoff Principal Balance:

0.00

Page 32 of 35

LB-UBS Commercial Mortgage Trust 2005-C1

Payment Date:
Prior Payment:
Next Payment:
Record Date:

17-May-05
17-May-05

15-Apr-05

17-Jun-05

29-Apr-05

Commercial Mortgage Pass-Through Certificates,

Series 2005-C1

ABN AMRO Acct: 722354.1

Rating Information

Class

CUSIP

Fitch

Moody's

S&P

Fitch

Moody's

S&P

Original Ratings

Rating Change/Change Date(1)

Statement Date:

A-1

52108H2Q6

Aaa

AAA

A-2

52108H2R4

Aaa

AAA

A-3

52108H2S2

Aaa

AAA

A-AB

52108H2T0

Aaa

AAA

A-4

52108H2U7

Aaa

AAA

A-1A

52108H2V5

Aaa

AAA

A-J

52108H2W3

Aaa

AAA

52108H2X1

Aa1

AA+

52108H2Y9

Aa2

52108H2Z6

Aa3

AA-

52108H3A0

52108HZ23

A-

52108HZ49

Baa1

BBB+

52108HZ64

Baa2

BBB

52108HZ80

Baa3

BBB-

52108H2A1

Ba1

BB+

52108H2C7

Ba2

52108H2E3

Ba3

BB-

52108H2G8

B+

52108H2J2

52108H2L7

B-

52108H2N3

Page 33 of 35

NR - Designates that the class was not rated by the rating agency.

(1)

Changed ratings provided on this report are based on information provided by the applicable rating agency via electronic transmission. It shall be understood that this transmission will generally have been provided to

LaSalle within 30 days of the payment date listed on this statement. Because ratings may have changed during the 30 day window, or may not be being provided by the rating agency in an electronic format and therefore not
being updated on this report, LaSalle recommends that investors obtain current rating information directly from the rating agency.

LB-UBS Commercial Mortgage Trust 2005-C1

Payment Date:
Prior Payment:
Next Payment:
Record Date:

17-May-05
17-May-05

15-Apr-05

17-Jun-05

29-Apr-05

Commercial Mortgage Pass-Through Certificates,

Series 2005-C1

ABN AMRO Acct: 722354.1

Rating Information

Class

CUSIP

Fitch

Moody's

S&P

Fitch

Moody's

S&P

Original Ratings

Rating Change/Change Date(1)

Statement Date:

X-CP

52108H3B8

Aaa

AAA

X-CL

52108HY81

Aaa

AAA

9ABST6747

Page 34 of 35

NR - Designates that the class was not rated by the rating agency.

(1)

LB-UBS Commercial Mortgage Trust 2005-C1

Payment Date:
Prior Payment:
Next Payment:
Record Date:

17-May-05
17-May-05

15-Apr-05

17-Jun-05

29-Apr-05

Commercial Mortgage Pass-Through Certificates,

Series 2005-C1

ABN AMRO Acct: 722354.1

Legend

Statement Date:

Until this statement/report is filed with the Commission with respect to the Trust pursuant to Section 15(d) of the Securities Exchange Act of 1934, as amended,

the recipient hereof shall be deemed to keep the information contained herein confidential and such information will not, without the prior consent of the Master
Servicer or the Trustee, be disclosed by such recipient or by its officers, directors, partners, employees, agents or representatives in any manner whatsoever, in

whole or in part.

Page 35 of 35

LB-UBS Commercial Mortgage Trust 2005-C1 8-K