(Mark Your Calendars: RealShare HOTELS 2011, September 15 in New York City).

ROSSLYN, VA-Lehman Brothers--or what is left of it in the form of Lehman Bros. Holdings--is in the process of selling its majority stake in a 10-building office portfolio located here for $1.26 billion. The firm filed a petition with the bankruptcy court seeking permission for the authority to sell its 78.5% limited partner interest in Rosslyn Syndication Partners JV LP,  the owner of the 3.2-million-square-foot portfolio. Judge James Peck will hear the petition on Aug. 17. The Wall Street Journal also reported the news.

Monday Properties is Lehman’s partner in the portfolio. Neither company would comment on the deal, citing its ongoing status. However in official statements released by the firms to GlobeSt.com, it appears that Monday is retaining its interest in the portfolio. “We will continue our long-term commitment to this exceptional portfolio and our tenants,“ the statement says. “This focus extends to the continued development of 1812 North Moore Street that is currently under construction and scheduled for completion in 2013." The buyer, according to the Journal, is Goldman Sachs Group private equity fund.

The portfolio is trading at close to the value that Lehman Bros. paid for it originally in 2007, $1.29 billion, the WSJ also noted. In general, Lehman Bros. is stepping up the sale of many of the remaining real estate assets it has--including its Archstone multifamily portfolio--in order to take advantage of the ongoing recovery of commercial real estate valuations.

"Based on the core profile of the portfolio and the competitive environment for high quality product in gateway markets, we feel this is a good time to maximize value for our creditors and monetize this important position in our portfolio,” Ashish Gupta, senior vice president in Lehman's real estate group, said in a statement.