CAMBRIDGE, MA-Metabolix Inc. relocates its corporate headquarters and research and development facility from 303 Third St. to 28,000 sf at 21 Erie St. The privately held biotechnology company signed a 10-year lease for the space.

WALTHAM, MA-Cornerstone Real Estate Advisers sells Two and Three University Office Park to Aslan Realty Partners II LP, a $680-million fund sponsored by Transwestern Investment Co. This is the Chicago-based company's first acquisition in the area.

BOSTON- American Student Assistance is selling 330 Stuart St., a 104,000-SF first class office and retail building located in the Back Bay at the corner of Berkeley and Stuart Streets. The company is relocating to 100 Cambridge St. where it is leasing 150,000 sf.

BOSTON-Robert G. Prendergast becomes senior vice president and chief operating officer at Heritage Property Investment Trust. The position has been vacant at the locally based trust--one of the largest owners and operators of neighborhood and community shopping centers in the US--since June 2003.

BOSTON-The Boston Redevelopment Authority approves Equity Office's $300-million Russia Wharf project in the Fort Point Downtown district. The 942,000-sf redevelopment project involves 50 residential lofts along the Rose Kennedy Greenway, a 300-room hotel, 500,000-sf of office space as well as retail and open space.

BOSTON-Mayor Thomas M. Menino unveils a new housing plan for the city that involves the production of 10,000 new units of housing. The four-year, $375 million campaign is building on the city's initial plan to increase the production of housing.

BOSTON-Cresa Partners relocates its corporate headquarters from 84 State St. to 200 State St. The firm is leasing 10,700 sf on the 13th floor of the 15-story building which is located in the financial district on the waterfront.

BOSTON-Fan Pier, the 20-acre mixed use development site located on South Boston's waterfront, is officially on the market. Chicago-based developer Nicholas Pritzker spent nearly three years getting the $1.2-billion hotel, office and residential complex permitted, but never managed to secure the necessary financing.