AMENDMENT TO CONTRIBUTION AGREEMENT

Exhibit 10.3

AMENDMENT TO

CONTRIBUTION AGREEMENT

(RKB FUND)

THIS AMENDMENT TO CONTRIBUTION AGREEMENT is entered into as of December 20, 2005 between RKB Washington Property Fund I L.P., a Delaware limited partnership (“ RKB ”), and Republic Property Limited Partnership, a Delaware limited partnership (the “ Operating Partnership ”).

WHEREAS, the Operating Partnership and RKB previously entered into that certain Contribution Agreement dated as of September 23, 2005 (the “ Contribution Agreement ”); and

WHEREAS, the Operating Partnership and RKB desire to amend certain terms of the Contribution Agreement.

NOW THEREFORE, in consideration of the foregoing and the mutual covenants and conditions set forth herein and other good and valuable consideration, the receipt and sufficie