An affiliate of real-estate company The Bulfinch Cos. has acquired the headquarters of research and advisory firm Forrester Research Inc. (Nasdaq: FORR) and an accompanying parking garage for $138.75 million, according to a Middlesex County deed record. 

Bulfinch developed the six-story, 193,000-square-foot property in 2011 and later sold it. The seller in the most-recent deal, recorded on Aug. 6, was an affiliate of CBRE Global Investors. 

Cambridge Discovery Park (CDP) is a 27-acre office,…

Boston Biz Journal