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) April 15, 2005

Wachovia Commercial Mortgage Securities, Inc. (as depositor under the Pooling and Servicing Agreement, dated as of July 1, 2004, relating to the Wachovia Bank Commercial Mortgage Trust, Commercial Mortgage Pass-Through Certificates, Series 2004-C12)
(Exact name of registrant as specified in its charter)

North Carolina
(State or other jurisdiction
of incorporation)

333-108944-05
(Commission
File Number)

56-1643598
(IRS Employer
Identification No.)

301 South College Street, Charlotte, North Carolina
(Address of principal executive offices)

28288-0166
(Zip Code)

Registrant's telephone number, including area code 704-374-6161

(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 Wachovia Commercial Mortgage Securities, Inc., Commercial Mortgage Pass-Through Certificates, Series 2004-C12, which was made on April 15, 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 April 15, 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 WACHOVIA COMMERCIAL MORTGAGE SECURITIES, INC., REGISTRANT

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

Date: April 20, 2005

Wachovia Commercial Mortgage Securities, Inc.

Commercial Mortgage Pass-Through Certificates

Series 2004-C12

ABN AMRO Acct: 721919.1

Reporting Package Table of Contents

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

15-Apr-05
15-Apr-05

17-Mar-05

17-May-05

31-Mar-05

Administrator:

Nick Xeros 312.904.0708
nick.xeros@abnamro.com

Analyst:

Christine Paidosh 714.259.6207
christine.paidosh@abnamro.com

Statement Date:

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

Statements to Certificateholders
Cash Reconciliation Summary
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

Delinquent Loan Detail
Historical Collateral Prepayment
Loan Level Detail

Page 2-4
Page 5
Page 6-8
Page 9

Page 10

Page 11-14
Page 15-18

Page 19
Page 20

Page 21-25

Specially Serviced (Part I) - Loan Detail

Specially Serviced (Part II) - Servicer Comments
Modified Loan Detail
Appraisal Reduction Detail

Appraisal Reduction Detail
Historical REO Report
Realized Loss Detail

Page 26

Page 27
Page 28
Page 29

Page 30
Page 31
Page 32

Page(s)

Information is available for this issue from the following sources

Issue Id:

Monthly Data File
Name:

WBCM4C12

WBCM4C12_200504_3.ZIP

Closing Date:

First Payment Date:

Rated Final Payment: Date:

8-Jul-04
17-Aug-04

17-Jul-41

Rating Information
Defeased Loans

Page 33
Page 34

Parties to The Transaction

Depositor: Wachovia Commercial Mortgage Securities, Inc.

Underwriter: Wachovia Securities/Citigroup Global Markets Inc/J.P. Morgan Securities Inc

Master Servicer: Wachovia Bank, National Association

Special Servicer: Clarion Partners, LLC

Rating Agency: Standard & Poor's/Fitch Ratings

800.246.5761

LaSalle Factor Line

LaSalle Web Site

Servicer Web Site

www.wachovia.com

www.etrustee.net

Page 1 of 34

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:

5.455212%

15-Apr-05
15-Apr-05

17-Mar-05

17-May-05

31-Mar-05

Wachovia Commercial Mortgage Securities, Inc.

Commercial Mortgage Pass-Through Certificates

Series 2004-C12

Face Value (1)

Balance

Payment

Adj. or Loss

Amortization

Balance

Payment (2)

Adjustment

Rate

100

REMIC II

Statement Date:

ABN AMRO Acct: 721919.1

902.509229800

11.533674800

0.000000000

890.975555000

2.560117800

Fixed

0.00

0.000000000

3.40400000%

0.000000000

929766SC8

50,000,000.00

576,683.74

0.00

44,548,777.75

128,005.89

45,125,461.49

1000.000000000

0.000000000

1000.000000000

4.167500000

Fixed

0.00

0.000000000

5.00100000%

0.000000000

929766SD6

199,000,000.00

0.00

199,000,000.00

829,332.50

199,000,000.00

1000.000000000

0.000000000

1000.000000000

4.358333293

5.230000000%

0.00

0.000000000

5.23000000%

0.000000000

929766TL7

82,000,000.00

0.00

82,000,000.00

357,383.33

82,000,000.00

1000.000000000

0.000000000

1000.000000000

4.509202234

5.235008220%

0.00

0.000000000

5.41104267%

0.000000000

929766TM5

474,876,000.00

0.00

474,876,000.00

2,141,311.92

474,876,000.00

996.736655858

0.391401101

0.000000000

996.345254757

4.344110631

5.230000000%

0.00

0.000000000

5.23000000%

0.000000000

929766SK0

A1-A

115,031,000.00

45,023.26

0.00

114,610,591.00

499,707.39

114,655,614.26

995.061667299

0.000000000

994.476859621

0.171938971

0.126884654%

0.00

0.000000000

0.20735073%

0.000000000

929766SJ3

1,063,096,508.00

0.00

1,057,224,876.75

182,787.72

1,057,846,583.75

1000.000000000

0.000000000

1000.000000000

4.509202313

5.235008220%

0.00

0.000000000

5.41104267%

0.000000000

929766SE4

25,248,000.00

0.00

25,248,000.00

113,848.34

25,248,000.00

1000.000000000

0.000000000

1000.000000000

4.509202322

5.235008220%

0.00

0.000000000

5.41104267%

0.000000000

929766SF1

9,302,000.00

0.00

9,302,000.00

41,944.60

9,302,000.00

1000.000000000

0.000000000

1000.000000000

4.509202302

5.235008220%

0.00

0.000000000

5.41104267%

0.000000000

929766SG9

22,590,000.00

0.00

22,590,000.00

101,862.88

22,590,000.00

1000.000000000

0.000000000

1000.000000000

4.509202258

5.235008220%

0.00

0.000000000

5.41104267%

0.000000000

929766SH7

10,630,000.00

0.00

10,630,000.00

47,932.82

10,630,000.00

1000.000000000

0.000000000

1000.000000000

4.509202274

5.235008220%

0.00

0.000000000

5.41104267%

0.000000000

929766SL8

11,959,000.00

0.00

11,959,000.00

53,925.55

11,959,000.00

1000.000000000

0.000000000

1000.000000000

4.509202274

5.235008220%

0.00

0.000000000

5.41104267%

0.000000000

929766SM6

11,959,000.00

0.00

11,959,000.00

53,925.55

11,959,000.00

1000.000000000

0.000000000

1000.000000000

4.509202288

5.235008220%

0.00

0.000000000

5.41104267%

0.000000000

929766SN4

13,288,000.00

0.00

13,288,000.00

59,918.28

13,288,000.00

1000.000000000

0.000000000

1000.000000000

4.250000000

5.100000000%

0.00

0.000000000

5.10000000%

0.000000000

929766SP9

3,986,000.00

0.00

3,986,000.00

16,940.50

3,986,000.00

1000.000000000

0.000000000

1000.000000000

4.250000000

5.100000000%

0.00

0.000000000

5.10000000%

0.000000000

929766SQ7

2,657,000.00

0.00

2,657,000.00

11,292.25

2,657,000.00

Page 2 of 34

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:

5.455212%

15-Apr-05
15-Apr-05

17-Mar-05

17-May-05

31-Mar-05

Wachovia Commercial Mortgage Securities, Inc.

Commercial Mortgage Pass-Through Certificates

Series 2004-C12

Face Value (1)

Balance

Payment

Adj. or Loss

Amortization

Balance

Payment (2)

Adjustment

Rate

100

REMIC II

Statement Date:

ABN AMRO Acct: 721919.1

1000.000000000

0.000000000

1000.000000000

4.250000000

5.100000000%

0.00

0.000000000

5.10000000%

0.000000000

929766SR5

5,315,000.00

0.00

5,315,000.00

22,588.75

5,315,000.00

1000.000000000

0.000000000

1000.000000000

4.250000000

5.100000000%

0.00

0.000000000

5.10000000%

0.000000000

929766SS3

3,986,000.00

0.00

3,986,000.00

16,940.50

3,986,000.00

1000.000000000

0.000000000

1000.000000000

4.250000000

5.100000000%

0.00

0.000000000

5.10000000%

0.000000000

929766ST1

2,657,000.00

0.00

2,657,000.00

11,292.25

2,657,000.00

1000.000000000

0.000000000

1000.000000000

4.250000000

5.100000000%

0.00

0.000000000

5.10000000%

0.000000000

929766SU8

2,657,000.00

0.00

2,657,000.00

11,292.25

2,657,000.00

1000.000000000

0.000000000

1000.000000000

4.250000063

5.100000000%

0.00

0.000000000

5.10000000%

0.000000000

929766SV6

15,955,508.00

0.00

15,955,508.00

67,810.91

15,955,508.00

999.999967541

0.000000000

999.999967541

4.532591251

5.262300000%

0.00

0.000000000

5.43911000%

0.000000000

929766SW4

MAD

13,555,555.00

0.00

13,555,554.56

61,441.79

13,555,554.56

0.000000000

0.00

0.000000000

N/A

0.000000000

9ABSR4249

R-II

0.00

Total P&I Payment

0.00

1,076,652,063.00

1,071,402,138.31

5,453,192.97

Total

1,070,780,431.31

621,707.00

0.00

4,831,485.97

Page 3 of 34

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:

5.455212%

15-Apr-05
15-Apr-05

17-Mar-05

17-May-05

31-Mar-05

Wachovia Commercial Mortgage Securities, Inc.

Commercial Mortgage Pass-Through Certificates

Series 2004-C12

Face Value (1)

Balance

Payment

Adj. or Loss

Amortization

Balance

Payment (2)

Adjustment

Rate

100

Grantor Trust

Statement Date:

ABN AMRO Acct: 721919.1

0.000000000

0.00

0.000000000

N/A

0.000000000

9ABSR4223

0.00

Total P&I Payment

0.00

Total

0.00

Page 4 of 34

Wachovia Commercial Mortgage Securities, Inc.

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

15-Apr-05
15-Apr-05

17-Mar-05

17-May-05

31-Mar-05

Commercial Mortgage Pass-Through Certificates

Series 2004-C12

ABN AMRO Acct: 721919.1

Statement Date:

Cash Reconciliation Summary

Current Scheduled Interest

Interest Summary

Less Deferred Interest

Plus Gross Advance Interest

Less PPIS Reducing Scheduled Int

4,870,604.88

0.00
0.00

Less ASER Interest Adv Reduction

0.00

Less Other Adjustment

0.00

Total

4,870,604.88

Unscheduled Interest:
Prepayment Penalties

0.00

Yield Maintenance Penalties

0.00

Other Interest Proceeds

0.00

Total

0.00

Less Fees & Expenses Paid By/T

Less Fee Paid To Servicer
Less Fee Strips Paid by Servicer

Non Recoverable 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

Master Servicing Fee Summary

Master Servicing Fees

Plus Fees Advanced for PPIS

Less Reduction for PPIS
Plus Delinquent Servicing Fees

Total Master 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

4,833,271.64

)

(1,785.67

0.00
0.00
0.00

)

(1,785.67

621,706.99

0.00

621,706.99

0.01
0.00

0.00

0.00
0.00
0.01

621,707.00

5,454,978.64

5,453,192.97

1,071,402,139.84

621,706.99

0.01

0.00
0.00

0.00

1,070,780,432.84

0.00

37,333.24

0.00

37,333.24

0.00
0.00
0.00
0.00
0.00
0.00

0.00

Advance Summary (Advance Made by Servicer)

)

(37,333.24

4,831,485.97

Less Other Interest Not Advanced

0.00

Workout Fees
Liquidation Fees

0.00
0.00

Less Non Recovered

0.00

0.00
0.00

0.00

Grace Period Interest
Advance Interest

Plus Trustee Fees Paid by Servicer

0.00

Grace Period Servicing Fee

Deliquent Servicing Fee

Grace Period Principal

Advance Principal

0.00

Page 5 of 34

Wachovia Commercial Mortgage Securities, Inc.

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

15-Apr-05
15-Apr-05

17-Mar-05

17-May-05

31-Mar-05

Commercial Mortgage Pass-Through Certificates

Series 2004-C12

ABN AMRO Acct: 721919.1

Statement Date:

Cash Reconciliation Summary Pool Group 1

Current Scheduled Interest

Interest Summary

Less Deferred Interest

Plus Gross Advance Interest

Less PPIS Reducing Scheduled Int

3,933,029.39

0.00
0.00

Less ASER Interest Adv Reduction

0.00

Less Other Adjustment

0.00

Total

3,933,029.39

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

3,903,138.80

)

(1,435.32

0.00
0.00
0.00

)

(1,435.32

576,683.73

0.00

576,683.73

0.01
0.00
0.00
0.00
0.00
0.01

576,683.74

4,479,822.54

4,478,387.22

861,190,934.00

576,683.73

0.01

0.00
0.00

0.00

860,614,250.26

0.00

29,890.59

0.00
0.00
0.00

29,890.59

0.00
0.00
0.00
0.00
0.00
0.00

0.00

)

(29,890.59

3,901,703.48

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 34

Wachovia Commercial Mortgage Securities, Inc.

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

15-Apr-05
15-Apr-05

17-Mar-05

17-May-05

31-Mar-05

Commercial Mortgage Pass-Through Certificates

Series 2004-C12

ABN AMRO Acct: 721919.1

Statement Date:

Cash Reconciliation Summary Pool Group 2

Current Scheduled Interest

Interest Summary

Less Deferred Interest

Plus Gross Advance Interest

Less PPIS Reducing Scheduled Int

501,116.73

0.00
0.00

Less ASER Interest Adv Reduction

0.00

Less Other Adjustment

0.00

Total

501,116.73

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

496,859.27

)

(191.09

0.00
0.00
0.00

)

(191.09

45,023.26

0.00

45,023.26

0.00
0.00
0.00
0.00
0.00
0.00

45,023.26

541,882.53

541,691.43

114,655,650.28

45,023.26

0.00

0.00
0.00

0.00

114,610,627.02

0.00

4,257.46

0.00
0.00
0.00

4,257.46

0.00
0.00
0.00
0.00
0.00
0.00

0.00

)

(4,257.46

496,668.17

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 34

Wachovia Commercial Mortgage Securities, Inc.

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

15-Apr-05
15-Apr-05

17-Mar-05

17-May-05

31-Mar-05

Commercial Mortgage Pass-Through Certificates

Series 2004-C12

ABN AMRO Acct: 721919.1

Statement Date:

Cash Reconciliation Summary Madison Loan - Non Pooled

Current Scheduled Interest

Interest Summary

Less Deferred Interest

Plus Gross Advance Interest

Less PPIS Reducing Scheduled Int

61,916.24

0.00
0.00

Less ASER Interest Adv Reduction

0.00

Less Other Adjustment

0.00

Total

61,916.24

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

61,464.39

)

(22.59

0.00
0.00
0.00

)

(22.59

0.00
0.00
0.00

0.00
0.00
0.00
0.00
0.00
0.00
0.00

61,464.39

61,441.80

13,555,555.56

0.00
0.00

0.00

13,555,555.56

0.00

451.85

0.00
0.00
0.00

451.85

0.00
0.00
0.00
0.00
0.00
0.00

0.00

)

(451.85

61,441.80

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 8 of 34

Wachovia Commercial Mortgage Securities, Inc.

Class

Accrued

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

15-Apr-05
15-Apr-05

17-Mar-05

17-May-05

31-Mar-05

Commercial Mortgage Pass-Through Certificates

Series 2004-C12

ABN AMRO Acct: 721919.1
Bond Interest Reconciliation

Deductions

Allocable

Deferred &

Prior

Prepay-

Other

Additions

Interest

Credit Support

Original

Current(4)

Accrual

Int. Short-

falls Due

ment

Interest

Interest (2)

Payment

Amount

PPIS

Interest

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)

0.00

128,005.89

0.00

13.38%

13.45%

30/360

3.404000000%

0.00

829,332.50

0.00

13.38%

13.45%

30/360

5.001000000%

0.00

357,383.33

0.00

13.38%

13.45%

30/360

5.230000000%

0.00

2,141,311.92

0.00

13.38%

13.45%

30/360

5.411042670%

0.00

A1-A

499,707.39

0.00

13.38%

13.45%

30/360

5.230000000%

0.00

182,787.72

0.00

30/360

0.207350733%

0.00

113,848.34

0.00

11.00%

11.06%

30/360

5.411042670%

0.00

41,944.60

0.00

10.13%

10.18%

30/360

5.411042670%

0.00

101,862.88

0.00

8.00%

8.04%

30/360

5.411042670%

0.00

47,932.82

0.00

7.00%

7.04%

30/360

5.411042670%

0.00

53,925.55

0.00

5.88%

5.91%

30/360

5.411042670%

0.00

53,925.55

0.00

4.75%

4.78%

30/360

5.411042670%

0.00

59,918.28

0.00

3.50%

3.52%

30/360

5.411042670%

0.00

16,940.50

0.00

3.13%

3.14%

30/360

5.100000000%

0.00

11,292.25

0.00

2.88%

2.89%

30/360

5.100000000%

0.00

22,588.75

0.00

2.38%

2.39%

30/360

5.100000000%

0.00

16,940.50

0.00

2.00%

2.01%

30/360

5.100000000%

0.00

11,292.25

0.00

1.75%

1.76%

30/360

5.100000000%

0.00

11,292.25

0.00

1.50%

1.51%

30/360

5.100000000%

0.00

67,810.91

0.00

0.00%

30/360

5.100000000%

0.00

MAD

61,441.79

0.00

30/360

5.439110000%

0.00

0.000000000%

0.00

4,831,485.97

0.00

(2) Accrued - Deductions + Additions Interest

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

Page 9 of 34

(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).

Wachovia Commercial Mortgage Securities, Inc.

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

15-Apr-05
15-Apr-05

17-Mar-05

17-May-05

31-Mar-05

Commercial Mortgage Pass-Through Certificates

Series 2004-C12

ABN AMRO Acct: 721919.1

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

Page 10 of 34

Wachovia Commercial Mortgage Securities, Inc.

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

15-Apr-05
15-Apr-05

17-Mar-05

17-May-05

31-Mar-05

Commercial Mortgage Pass-Through Certificates

Series 2004-C12

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: 721919.1

0.00%

15-Apr-05

0.00%

17-Mar-05

0.00%

17-Feb-05

0.00%

18-Jan-05

0.00%

17-Dec-04

0.00%

18-Nov-04

0.00%

18-Oct-04

0.00%

17-Sep-04

0.00%

17-Aug-04

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

Page 11 of 34

Wachovia Commercial Mortgage Securities, Inc.

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

15-Apr-05
15-Apr-05

17-Mar-05

17-May-05

31-Mar-05

Commercial Mortgage Pass-Through Certificates

Series 2004-C12

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:

Pool Group 1

ABN AMRO Acct: 721919.1

0.00%

15-Apr-05

0.00%

17-Mar-05

0.00%

17-Feb-05

0.00%

18-Jan-05

0.00%

17-Dec-04

0.00%

18-Nov-04

0.00%

18-Oct-04

0.00%

17-Sep-04

0.00%

17-Aug-04

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

Page 12 of 34

Wachovia Commercial Mortgage Securities, Inc.

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

15-Apr-05
15-Apr-05

17-Mar-05

17-May-05

31-Mar-05

Commercial Mortgage Pass-Through Certificates

Series 2004-C12

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:

Pool Group 2

ABN AMRO Acct: 721919.1

0.00%

15-Apr-05

0.00%

17-Mar-05

0.00%

17-Feb-05

0.00%

18-Jan-05

0.00%

17-Dec-04

0.00%

18-Nov-04

0.00%

18-Oct-04

0.00%

17-Sep-04

0.00%

17-Aug-04

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

Page 13 of 34

Wachovia Commercial Mortgage Securities, Inc.

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

15-Apr-05
15-Apr-05

17-Mar-05

17-May-05

31-Mar-05

Commercial Mortgage Pass-Through Certificates

Series 2004-C12

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:

Madison Loan - Non Pooled

ABN AMRO Acct: 721919.1

0.00%

15-Apr-05

0.00%

17-Mar-05

0.00%

17-Feb-05

0.00%

18-Jan-05

0.00%

17-Dec-04

0.00%

18-Nov-04

0.00%

18-Oct-04

0.00%

17-Sep-04

0.00%

17-Aug-04

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

Page 14 of 34

Wachovia Commercial Mortgage Securities, Inc.

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

15-Apr-05
15-Apr-05

17-Mar-05

17-May-05

31-Mar-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: 721919.1

Series 2004-C12

15-Apr-05

100.00%

1,070,780,433

99.45%

0.00%

100

305

5.46%

5.41%

17-Mar-05

100.00%

1,071,402,140

99.51%

0.00%

101

306

5.28%

5.23%

17-Feb-05

100.00%

1,072,253,554

99.59%

0.00%

102

307

5.28%

5.24%

18-Jan-05

100.00%

1,072,868,432

99.65%

0.00%

103

308

5.28%

5.24%

17-Dec-04

100.00%

1,073,480,465

99.71%

0.00%

104

309

5.28%

5.24%

18-Nov-04

100.00%

1,074,167,480

99.77%

0.00%

105

310

5.46%

5.41%

18-Oct-04

100.00%

1,074,773,499

99.83%

0.00%

106

311

5.28%

5.24%

17-Sep-04

100.00%

1,075,454,720

99.89%

0.00%

107

312

5.46%

5.41%

17-Aug-04

100.00%

1,076,054,780

99.94%

0.00%

108

312

5.46%

5.41%

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

Page 15 of 34

Wachovia Commercial Mortgage Securities, Inc.

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

15-Apr-05
15-Apr-05

17-Mar-05

17-May-05

31-Mar-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:

Pool Group 1

Amort

ABN AMRO Acct: 721919.1

Series 2004-C12

15-Apr-05

83.51%

942,614,250

87.55%

0.00%

104

327

5.48%

5.44%

17-Mar-05

83.51%

943,190,934

87.60%

0.00%

105

328

5.30%

5.26%

17-Feb-05

83.51%

943,983,561

87.68%

0.00%

106

329

5.30%

5.26%

18-Jan-05

83.51%

944,553,905

87.73%

0.00%

107

330

5.30%

5.26%

17-Dec-04

83.51%

945,121,615

87.78%

0.00%

108

331

5.30%

5.26%

18-Nov-04

83.51%

945,759,837

87.84%

0.00%

109

332

5.48%

5.44%

18-Oct-04

83.51%

946,321,971

87.89%

0.00%

110

333

5.30%

5.26%

17-Sep-04

83.51%

946,954,822

87.95%

0.00%

111

334

5.48%

5.44%

17-Aug-04

83.51%

947,511,433

88.01%

0.00%

112

335

5.48%

5.44%

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

Page 16 of 34

Wachovia Commercial Mortgage Securities, Inc.

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

15-Apr-05
15-Apr-05

17-Mar-05

17-May-05

31-Mar-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:

Pool Group 2

Amort

ABN AMRO Acct: 721919.1

Series 2004-C12

15-Apr-05

15.46%

114,610,627

10.65%

0.00%

285

5.24%

5.20%

17-Mar-05

15.46%

114,655,650

10.65%

0.00%

286

5.08%

5.03%

17-Feb-05

15.46%

114,714,438

10.65%

0.00%

287

5.08%

5.03%

18-Jan-05

15.46%

114,758,971

10.66%

0.00%

288

5.08%

5.03%

17-Dec-04

15.46%

114,803,294

10.66%

0.00%

288

5.08%

5.03%

18-Nov-04

15.46%

114,852,088

10.67%

0.00%

289

5.25%

5.20%

18-Oct-04

15.46%

114,895,972

10.67%

0.00%

290

5.08%

5.03%

17-Sep-04

15.46%

114,944,343

10.68%

0.00%

291

5.25%

5.20%

17-Aug-04

15.46%

114,987,792

10.68%

0.00%

292

5.25%

5.20%

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

Page 17 of 34

Wachovia Commercial Mortgage Securities, Inc.

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

15-Apr-05
15-Apr-05

17-Mar-05

17-May-05

31-Mar-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:

Madison Loan - Non Pooled

Amort

ABN AMRO Acct: 721919.1

Series 2004-C12

15-Apr-05

1.03%

13,555,556

1.26%

0.00%

105

351

5.48%

5.44%

17-Mar-05

1.03%

13,555,556

1.26%

0.00%

106

352

4.95%

4.91%

17-Feb-05

1.03%

13,555,556

1.26%

0.00%

107

353

5.48%

5.44%

18-Jan-05

1.03%

13,555,556

1.26%

0.00%

108

354

5.48%

5.44%

17-Dec-04

1.03%

13,555,556

1.26%

0.00%

109

355

5.30%

5.26%

18-Nov-04

1.03%

13,555,556

1.26%

0.00%

110

356

5.48%

5.44%

18-Oct-04

1.03%

13,555,556

1.26%

0.00%

111

357

5.30%

5.26%

17-Sep-04

1.03%

13,555,556

1.26%

0.00%

112

358

5.48%

5.44%

17-Aug-04

1.03%

13,555,556

1.26%

0.00%

113

359

5.48%

5.44%

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

Page 18 of 34

Wachovia Commercial Mortgage Securities, Inc.

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

15-Apr-05
15-Apr-05

17-Mar-05

17-May-05

31-Mar-05

Commercial Mortgage Pass-Through Certificates

Series 2004-C12

ABN AMRO Acct: 721919.1

Delinquent Loan Detail

Disclosure

Control #

Paid

Thru
Date

Current P&I

Advance

Outstanding

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 34

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

Wachovia Commercial Mortgage Securities, Inc.

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

15-Apr-05
15-Apr-05

17-Mar-05

17-May-05

31-Mar-05

Commercial Mortgage Pass-Through Certificates

Series 2004-C12

ABN AMRO Acct: 721919.1

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 20 of 34

Wachovia Commercial Mortgage Securities, Inc.

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

15-Apr-05
15-Apr-05

17-Mar-05

17-May-05

31-Mar-05

Commercial Mortgage Pass-Through Certificates

Series 2004-C12

ABN AMRO Acct: 721919.1

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:

5.06800%

1-Feb-14

WBC4C12A

Office

0.00

118,037,100

649,182

5.30430%

11-Jan-14

WBC4C12C

Office

0.00

82,000,000

374,543

5.29000%

11-May-11

WBC4C12A

Office

0.00

58,500,000

266,484

4.92000%

11-May-14

WBC4C12A

Retail

0.00

57,500,000

243,608

5.66000%

11-Jun-09

WBC4C12A

Office

0.00

35,000,000

170,586

5.43000%

11-Jun-14

WBC4C12A

Retail

0.00

32,251,115

183,670

5.80500%

11-May-11

WBC4C12A

Office

0.00

30,000,000

149,963

6.23000%

11-Dec-13

WBC4C12A

Retail

0.00

22,664,485

141,316

5.05000%

11-Jun-14

WBC4C12A

Retail

0.00

20,500,000

89,147

4.56000%

11-May-14

WBC4C12B

Multifamily

0.00

18,200,000

71,465

5.80000%

11-Jun-14

WBC4C12A

Retail

0.00

17,430,000

87,053

4.61000%

11-Apr-09

WBC4C12B

Multifamily

0.00

17,000,000

67,485

4.84000%

11-May-14

WBC4C12A

Office

0.00

16,500,000

68,768

5.92000%

11-Jul-14

WBC4C12A

Industrial

0.00

16,258,896

97,484

5.80000%

11-May-14

WBC4C12A

Multifamily

0.00

15,250,000

76,165

5.54000%

11-Jun-14

WBC4C12A

Industrial

0.00

14,843,070

85,545

4.95000%

11-May-14

WBC4C12A

Office

0.00

14,312,739

77,397

4.26000%

11-Jun-09

WBC4C12B

Multifamily

0.00

14,000,000

51,357

5.07000%

11-Jun-14

WBC4C12A

Mobile home park

0.00

13,285,254

72,725

5.35450%

1-Apr-14

WBC4C12A

Retail

0.00

12,879,407

72,910

5.50000%

11-Jul-14

WBC4C12A

Retail

0.00

13,000,000

61,569

5.90000%

11-Jun-11

WBC4C12A

Office

0.00

12,725,000

64,650

5.73000%

11-May-14

WBC4C12A

Office

0.00

11,868,132

69,876

Page 21 of 34

* 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

Wachovia Commercial Mortgage Securities, Inc.

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

15-Apr-05
15-Apr-05

17-Mar-05

17-May-05

31-Mar-05

Commercial Mortgage Pass-Through Certificates

Series 2004-C12

ABN AMRO Acct: 721919.1

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:

4.30000%

11-Jun-09

WBC4C12A

Self storage

0.00

11,946,000

44,233

5.32000%

11-May-14

WBC4C12A

Retail

0.00

11,303,003

63,669

5.11000%

11-Jun-24

WBC4C12A

Retail

0.00

10,732,360

73,720

5.67000%

11-Jun-11

WBC4C12A

Multifamily

0.00

10,960,000

53,512

4.30000%

11-Jun-09

WBC4C12A

Self storage

0.00

10,560,000

39,101

5.96000%

11-Jun-09

WBC4C12B

Multifamily

0.00

9,805,164

59,101

5.66000%

11-Jun-14

WBC4C12B

Multifamily

0.00

9,400,000

45,815

31-Dec-04

5.27000%

11-May-14

WBC4C12B

Multifamily

1.32

9,300,000

42,204

5.19000%

11-Jun-14

WBC4C12A

Office

0.00

9,017,503

50,023

5.50000%

11-Jun-14

WBC4C12A

Lodging

0.00

8,862,513

55,268

31-Dec-04

5.01000%

11-Jun-14

WBC4C12A

Office

1.74

8,771,579

47,697

5.71000%

11-Jun-14

WBC4C12A

Retail

0.00

8,711,134

51,131

5.12000%

11-May-14

WBC4C12A

Office

0.00

8,393,945

46,255

5.42000%

11-Jul-19

WBC4C12A

Retail

0.00

7,737,010

65,366

6.44200%

11-Jun-14

WBC4C12A

Office

0.00

7,732,682

49,004

5.31000%

11-Apr-14

WBC4C12B

Multifamily

0.00

7,697,106

43,362

4.76000%

11-Apr-14

WBC4C12A

Industrial

0.00

7,690,000

31,520

31-Dec-04

5.48000%

11-May-14

WBC4C12A

Multifamily

1.18

7,511,964

43,057

6.07000%

11-Jul-14

WBC4C12A

Retail

0.00

7,406,860

48,644

5.50000%

11-Jun-14

WBC4C12A

Lodging

0.00

7,188,483

44,828

6.19000%

11-Jul-14

WBC4C12A

Office

0.00

7,191,187

44,357

4.30000%

11-Jun-09

WBC4C12A

Self storage

0.00

6,960,000

25,771

5.44000%

11-May-14

WBC4C12B

Multifamily

0.00

6,600,000

30,917

Page 22 of 34

(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

Wachovia Commercial Mortgage Securities, Inc.

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

15-Apr-05
15-Apr-05

17-Mar-05

17-May-05

31-Mar-05

Commercial Mortgage Pass-Through Certificates

Series 2004-C12

ABN AMRO Acct: 721919.1

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:

5.85600%

11-Jun-14

WBC4C12A

Retail

0.00

6,337,325

37,781

5.22000%

11-Jun-14

WBC4C12A

Self storage

0.00

6,229,625

34,672

4.46000%

11-May-11

WBC4C12A

Industrial

0.00

6,032,000

23,166

5.50000%

11-Jun-14

WBC4C12A

Lodging

0.00

5,928,037

36,968

6.08000%

11-Jul-14

WBC4C12A

Office

0.00

5,850,970

35,678

4.30000%

11-Jun-09

WBC4C12A

Self storage

0.00

5,848,000

21,654

5.09000%

11-Jun-14

WBC4C12A

Retail

0.00

5,311,919

31,852

5.45000%

11-May-14

WBC4C12A

Industrial

0.00

5,337,055

30,491

5.25000%

11-Jun-14

WBC4C12A

Office

0.00

5,241,155

29,267

5.66000%

11-Jun-14

WBC4C12B

Multifamily

0.00

5,200,000

25,344

5.74000%

11-May-14

WBC4C12A

Mixed use

0.00

4,994,624

29,438

5.09000%

11-Jun-14

WBC4C12A

Industrial

0.00

4,942,662

27,117

5.08000%

11-May-14

WBC4C12A

Retail

0.00

4,937,104

27,086

6.10300%

11-Jun-14

WBC4C12A

Retail

0.00

4,904,010

30,006

4.30000%

11-Jun-09

WBC4C12A

Self storage

0.00

4,920,000

18,218

6.03000%

11-Jul-26

WBC4C12A

Retail

0.00

4,720,606

33,125

5.36000%

11-Jun-09

WBC4C12B

Multifamily

0.00

4,700,000

21,693

4.30000%

11-Jun-09

WBC4C12A

Self storage

0.00

4,696,000

17,388

5.70000%

11-Jun-14

WBC4C12A

Self storage

0.00

4,602,944

26,989

4.30000%

11-Jun-09

WBC4C12A

Self storage

0.00

4,480,000

16,588

5.49000%

11-Jun-14

WBC4C12A

Office

0.00

4,353,489

24,955

5.05000%

11-May-14

WBC4C12A

Office

0.00

4,146,845

22,675

5.48000%

11-Jun-19

WBC4C12B

Multifamily

0.00

3,854,012

32,810

Page 23 of 34

(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

Wachovia Commercial Mortgage Securities, Inc.

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

15-Apr-05
15-Apr-05

17-Mar-05

17-May-05

31-Mar-05

Commercial Mortgage Pass-Through Certificates

Series 2004-C12

ABN AMRO Acct: 721919.1

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:

4.30000%

11-Jun-09

WBC4C12A

Self storage

0.00

3,840,000

14,219

4.46000%

11-May-11

WBC4C12A

Retail

0.00

3,809,000

14,629

6.37000%

11-Jun-14

WBC4C12A

Office

0.00

3,617,997

22,759

5.12000%

11-Jun-14

WBC4C12A

Retail

0.00

3,460,105

19,046

4.30000%

11-Jun-09

WBC4C12A

Self storage

0.00

3,376,000

12,501

5.49000%

11-Jun-19

WBC4C12A

Retail

0.00

3,319,536

19,028

6.29000%

11-Jun-19

WBC4C12A

Retail

0.00

3,206,415

21,520

5.54000%

11-Jun-24

WBC4C12A

Retail

0.00

3,125,864

22,231

4.84000%

11-Jun-24

WBC4C12A

Retail

0.00

3,120,991

20,837

4.46000%

11-May-11

WBC4C12A

Retail

0.00

3,116,000

11,967

6.24000%

11-Jun-14

WBC4C12A

Retail

0.00

3,047,263

18,913

4.94000%

11-Jun-14

WBC4C12A

Retail

0.00

2,766,912

14,929

4.46000%

11-May-11

WBC4C12A

Retail

0.00

2,753,000

10,573

5.31000%

11-Apr-14

WBC4C12B

Multifamily

0.00

2,677,562

18,657

6.07000%

11-Jun-19

WBC4C12A

Retail

0.00

2,662,433

17,512

4.30000%

11-Jun-09

WBC4C12A

Self storage

0.00

2,624,000

9,716

4.79000%

11-Jun-14

WBC4C12A

Industrial

0.00

2,580,117

15,026

4.96000%

11-Jun-19

WBC4C12A

Other

0.00

2,502,016

20,507

5.49000%

11-May-19

WBC4C12A

Retail

0.00

2,515,581

14,434

4.30000%

11-Jun-09

WBC4C12A

Self storage

0.00

2,520,000

9,331

5.07000%

11-Apr-11

WBC4C12B

Multifamily

0.00

2,406,211

13,203

5.80000%

11-Jan-14

WBC4C12B

Multifamily

0.00

2,265,380

13,495

4.46000%

11-May-11

WBC4C12A

Retail

0.00

1,999,000

7,677

Page 24 of 34

(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

Wachovia Commercial Mortgage Securities, Inc.

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

15-Apr-05
15-Apr-05

17-Mar-05

17-May-05

31-Mar-05

Commercial Mortgage Pass-Through Certificates

Series 2004-C12

ABN AMRO Acct: 721919.1

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:

6.19000%

11-May-14

WBC4C12A

Retail

0.00

1,908,075

12,706

4.46000%

11-May-11

WBC4C12A

Retail

0.00

1,926,000

7,397

6.76000%

11-Jul-24

WBC4C12A

Retail

0.00

1,522,154

11,887

5.29000%

11-Nov-08

WBC4C12B

Multifamily

0.00

1,505,192

9,231

5.30430%

11-Jan-14

WBC4C12D

Office

0.00

13,555,556

61,916

1,070,780,433

5,492,312

Page 25 of 34

(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

Wachovia Commercial Mortgage Securities, Inc.

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

15-Apr-05
15-Apr-05

17-Mar-05

17-May-05

31-Mar-05

Commercial Mortgage Pass-Through Certificates

Series 2004-C12

ABN AMRO Acct: 721919.1

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)

Not Avail

Not Avail Not Avail

Page 26 of 34

(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

Wachovia Commercial Mortgage Securities, Inc.

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

15-Apr-05
15-Apr-05

17-Mar-05

17-May-05

31-Mar-05

Commercial Mortgage Pass-Through Certificates

Series 2004-C12

ABN AMRO Acct: 721919.1

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

Disclosure

Control #

Resolution

Strategy

Comments

Statement Date:

Page 27 of 34

Wachovia Commercial Mortgage Securities, Inc.

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

15-Apr-05
15-Apr-05

17-Mar-05

17-May-05

31-Mar-05

Commercial Mortgage Pass-Through Certificates

Series 2004-C12

ABN AMRO Acct: 721919.1

Modified Loan Detail

Disclosure

Control #

Modification

Date

Cutoff

Maturity

Date

Modification

Description

Modified

Maturity

Date

Statement Date:

Page 28 of 34

Wachovia Commercial Mortgage Securities, Inc.

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

15-Apr-05
15-Apr-05

17-Mar-05

17-May-05

31-Mar-05

Commercial Mortgage Pass-Through Certificates

Series 2004-C12

ABN AMRO Acct: 721919.1

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 29 of 34

Wachovia Commercial Mortgage Securities, Inc.

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

15-Apr-05
15-Apr-05

17-Mar-05

17-May-05

31-Mar-05

Commercial Mortgage Pass-Through Certificates

Series 2004-C12

ABN AMRO Acct: 721919.1

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 30 of 34

Wachovia Commercial Mortgage Securities, Inc.

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

15-Apr-05
15-Apr-05

17-Mar-05

17-May-05

31-Mar-05

Commercial Mortgage Pass-Through Certificates

Series 2004-C12

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: 721919.1

Page 31 of 34

Wachovia Commercial Mortgage Securities, Inc.

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

15-Apr-05
15-Apr-05

17-Mar-05

17-May-05

31-Mar-05

Commercial Mortgage Pass-Through Certificates

Series 2004-C12

ABN AMRO Acct: 721919.1

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 32 of 34

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

Wachovia Commercial Mortgage Securities, Inc.

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

15-Apr-05
15-Apr-05

17-Mar-05

17-May-05

31-Mar-05

Commercial Mortgage Pass-Through Certificates

Series 2004-C12

ABN AMRO Acct: 721919.1

Rating Information

Class

CUSIP

Fitch

Moody's

S&P

Fitch

Moody's

S&P

Original Ratings

Rating Change/Change Date(1)

Statement Date:

929766SC8

AAA

929766SD6

AAA

929766TL7

AAA

929766TM5

AAA

A1-A

929766SK0

AAA

929766SJ3

AAA

929766SE4

929766SF1

AA-

929766SG9

929766SH7

A-

929766SL8

BBB+

929766SM6

BBB

929766SN4

BBB-

929766SP9

BB+

929766SQ7

929766SR5

BB-

929766SS3

B+

929766ST1

929766SU8

B-

929766SV6

MAD

929766SW4

BBB-

9ABSR4223

Page 33 of 34

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.

Wachovia Commercial Mortgage Securities, Inc.

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

15-Apr-05
15-Apr-05

17-Mar-05

17-May-05

31-Mar-05

Commercial Mortgage Pass-Through Certificates

Series 2004-C12

ABN AMRO Acct: 721919.1

Defeased Loans

Statement Date:

Disclosure
Control #

Page 34 of 34

Wachovia Bank Commercial Mortgage Trust Series 2004-C12 8-K