10-D 1 wbt07c31_10d-200709.txt UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington D.C. 20549 FORM 10-D ASSET-BACKED ISSUER DISTRIBUTION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the monthly distribution period from: August 18, 2007 to September 17, 2007 Commission File Number of issuing entity: 333-131262-07 Wachovia Bank Commercial Mortgage Trust 2007-C31 (Exact name of issuing entity as specified in its charter) Commission File Number of depositor: 333-131262 Wachovia Commercial Mortgage Securities Inc. (Exact name of depositor as specified in its charter) Wachovia Bank, National Associaton Nomura Credit & Capital, Inc. Barclays Capital Real Estate, Inc. (Exact name of sponsors as specified in its charter) New York (State or other jurisdiction of incorporation or organization of the issuing entity) 54-2199936 54-2199937 54-6747790 54-6747791 (I.R.S. Employer Identification No.) c/o Wells Fargo Bank, N.A. 9062 Old Annapolis Road Columbia, MD 21045 (Address of principal executive offices of the issuing entity) (Zip Code) (410) 884-2000 (Telephone number, including area code) Not Applicable (Former name, former address, if changed since last report) Registered/reporting pursuant to (check one) Title of Section Section Section Name of Exchange Class 12(b) 12(g) 15(d) (If Section 12(b)) A-1 ______ ______ ___X___ ___________ A-2 ______ ______ ___X___ ___________ A-3 ______ ______ ___X___ ___________ A-PB ______ ______ ___X___ ___________ A-4 ______ ______ ___X___ ___________ A-5 ______ ______ ___X___ ___________ A-5FL ______ ______ ___X___ ___________ A-1A ______ ______ ___X___ ___________ A-M ______ ______ ___X___ ___________ A-J ______ ______ ___X___ ___________ B ______ ______ ___X___ ___________ C ______ ______ ___X___ ___________ D ______ ______ ___X___ ___________ E ______ ______ ___X___ ___________ F ______ ______ ___X___ ___________ G ______ ______ ___X___ ___________ H ______ ______ ___X___ ___________ J ______ ______ ___X___ ___________ K ______ ______ ___X___ ___________ L ______ ______ ___X___ ___________ M ______ ______ ___X___ ___________ N ______ ______ ___X___ ___________ O ______ ______ ___X___ ___________ P ______ ______ ___X___ ___________ Q ______ ______ ___X___ ___________ S ______ ______ ___X___ ___________ T ______ ______ ___X___ ___________ U ______ ______ ___X___ ___________ R-I ______ ______ ___X___ ___________ R-II ______ ______ ___X___ ___________ Z ______ ______ ___X___ ___________ IO ______ ______ ___X___ ___________

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes __X__ No ____ Part I - DISTRIBUTION INFORMATION Item 1. Distribution and Pool Performance Information On September 17, 2007 a distribution was made to holders of Wachovia Bank Commercial Mortgage Trust 2007-C31. The distribution report is attached as an Exhibit to this Form 10-D, please see Item 9(b), Exhibit 99.1 for the related information. Part II - OTHER INFORMATION Item 9. Exhibits. (a) The following is a list of documents filed as part of this Report on Form 10-D: (99.1) Monthly report distributed to holders of Wachovia Bank Commercial Mortgage Trust 2007-C31, relating to the September 17, 2007 distribution. (b) The exhibits required to be filed by the Registrant pursuant to this Form are listed above and in the Exhibit Index that immediately follows the signature page hereof. 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 thereunto duly authorized. Wachovia Commercial Mortgage Securities Inc. (Depositor) /s/ Charles L. Culbreth Charles L. Culbreth, Managing Director Date: September 20, 2007 EXHIBIT INDEX Exhibit Number Description EX-99.1 Monthly report distributed to holders of Wachovia Bank Commercial Mortgage Trust 2007-C31, relating to the September 17, 2007 distribution. EX-99.1 Wells Fargo Bank, N.A. Corporate Trust Services 8480 Stagecoach Circle Frederick, MD 21701-4747 Wachovia Bank Commercial Mortgage Trust Commercial Mortgage Pass-Through Certificates Series 2007-C31 For Additional Information, please contact CTSLink Customer Service 1-866-846-4526 Reports Available @ www.ctslink.com/cmbs Payment Date: September 17, 2007 Record Date: August 31, 2007 Determination Date: September 11, 2007 DISTRIBUTION DATE STATEMENT Table of Contents STATEMENT SECTIONS PAGE(s) Certificate Distribution Detail 2 Certificate Factor Detail 3 Reconciliation Detail 4 Other Required Information 5 Cash Reconciliation 6 Ratings Detail 7 Current Mortgage Loan and Property Stratification Tables 8 - 16 Mortgage Loan Detail 17 - 22 NOI Detail 23 - 28 Principal Prepayment Detail 29 Historical Detail 30 Delinquency Loan Detail 31 - 32 Specially Serviced Loan Detail 33 - 34 Advance Summary 35 Modified Loan Detail 36 Historical Liquidated Loan Detail 37 Historical Bond/Collateral Loss Reconciliation Detail 38 Interest Shortfall Reconciliation Detail 39 - 40 Depositor Wachovia Commercial Mortgage Securities, Inc. 301 South College Street Charlotte, NC 28288-1016 Contact: Charles Culbreth Phone Number: (704) 383-7716 Master Servicer Wachovia Bank, National Association 8739 Research Drive URP 4, NC1075 Charlotte, NC 28262 Contact: Lea Land Phone Number: (704) 593-7950 Special Servicer LNR Partners, Inc. 1601 Washington Avenue Suite 700 Miami Beach, FL 33139 Contact: Vickie Taylor Phone Number: (305) 229-6614 This report has been compiled from information provided to Wells Fargo Bank, N.A. by various third parties, which may include the Servicer, Master Servicer, Special Servicer and others. Wells Fargo Bank, N.A. has not independently confirmed the accuracy of information received from these third parties and assumes no duty to do so. Wells Fargo Bank, N.A. expressly disclaims any responsibility for the accuracy or completeness of information furnished by third parties. Copyright 2007, Wells Fargo Bank, N.A.

Appraisal Reduction Amount None Cash Reconciliation Detail Total Funds Collected Interest: Scheduled Interest 29,169,547.33 Interest reductions due to Nonrecoverability Determinations 0.00 Interest Adjustments 0.00 Deferred Interest 0.00 Net Prepayment Interest Shortfall 0.00 Net Prepayment Interest Excess 0.00 Extension Interest 0.00 Interest Reserve Withdrawal 0.00 Total Interest Collected 29,169,547.33 Principal: Scheduled Principal 449,354.95 Unscheduled Principal 10,000,000.00 Principal Prepayments 0.00 Collection of Principal after Maturity Date 0.00 Recoveries from Liquidation and Insurance Proceeds 0.00 Excess of Prior Principal Amounts paid 0.00 Curtailments 10,000,000.00 Negative Amortization 0.00 Principal Adjustments 0.00 Total Principal Collected 10,449,354.95 Other: Prepayment Penalties/Yield Maintenance 0.00 Repayment Fees 0.00 Borrower Option Extension Fees 0.00 Equity Payments Received 0.00 Net Swap Counterparty Payments Received 220,010.83 Total Other Collected: 220,010.83 Total Funds Collected 39,838,913.11 Total Funds Distributed Fees: Master Servicing Fee 109,825.38 Trustee Fee - Wells Fargo Bank N.A. 1,850.62 Miscellaneous Fee 0.00 Certificate Administration Fee 0.00 Insurer Fee 0.00 Total Fees 111,676.00 Additional Trust Fund Expenses: Reimbursement for Interest on Advances 219.94 ASER Amount 0.00 Special Servicing Fee 0.00 Rating Agency Expenses 0.00 Attorney Fees & Expenses 0.00 Bankruptcy Expense 0.00 Taxes Imposed on Trust Fund 0.00 Non-Recoverable Advances 0.00 Other Expenses 0.00 Total Additional Trust Fund Expenses 219.94 Interest Reserve Deposit 0.00 Payments to Certificateholders & Others: Interest Distribution 29,277,662.08 Principal Distribution 10,449,354.97 Prepayment Penalties/Yield Maintenance 0.00 Borrower Option Extension Fees 0.00 Equity Payments Paid 0.00 Net Swap Counterparty Payments Paid 0.00 Total Payments to Certificateholders & Others 39,727,017.05 Total Funds Distributed 39,838,912.99

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Specially Serviced Loan Detail - Part 1 No Specially Serviced Loans this Period Specially Serviced Loan Detail - Part 2 No Specially Serviced Loans this Period

Modified Loan Detail No Modified Loans Historical Liquidated Loan Detail No Liquidated Loans this Period Historical Bond/Collateral Loss Reconciliation Detail No Realized Losses this Period

Wachovia Bank Commercial Mortgage Trust Series 2007-C31 10-D