Freddie Mac's Douglas R. Robinson and Eileen B. Fitzpatrick tell GlobeSt.com that the location and number of the properties involved have not been disclosed, as the data is considered proprietary information. However, the company has revealed that the portfolio concerns mortgages on mostly 5- to 50-unit properties. Another facet of the deal involves such Freddie Mac-supplied incentives as $100 million in fees for WaMu upon the issuance of individual Freddie Mac securities over the months of September and October of this year.

"We are committed to working with our lending partners to lower costs for affordable rental housing and to meet our affordable housing commitments," Adrian Corbiere, Freddie Mac multifamily division senior vice president, says.