CHICAGO—The public-private deal with help preserve thousands of units of affordable housing, including the 628-unit Marshall Field Garden Apartments on the North Side.

BOSTON—Equity Residential has sold the 50 Staniford Street medical office building on the Massachusetts General Hospital campus here for $123.3 million.

COLUMBIA, MD—The company is establishing a headquarters here, moving from Columbia Gateway Business Park.

LOS ANGELES—Law firm Stroock & Stroock & Lavan hires the 19-year industry veteran as a partner in the national real estate practice group at its Los Angeles office.