Calls to the Archon Group were not returned by press deadline, and brokers at Jones Lang LaSalle were unavailable for comment. JLL, whose predecessor developed the assets, is marketing the buildings on behalf of New York City-based J.P. Morgan Investment Co., which acquired them in 2001 for $97 million.

Despite the official silence, Archon is said to have emerged victorious over several well-heeled competitors for 125 and 150 CambridgePark Dr. "I know it's them," one Boston investment specialist tells GlobeSt.com. Another says an "extremely reliable" player close to the negotiations had relayed as much. Other industry professionals concur that Archon made a hard charge at the buildings after they hit the sales block, part of an overall strategy to invest in Massachusetts even as the firm harvests certain portions of its portfolio. Just last month, the Texas-based investor sold off four properties in Boston's Fort Point Channel area in two separate transactions totaling more than $90 million.

In the marketing brochure for the Cambridge assets, 125 and 150 CambridgePark Dr. are referred to as a "core-plus opportunity," with benefits including proximity next to the hulking Alewife garage and mass transit center, from which begins the regional Red Line subway line. The road network is at the junction of Routes 2 and 16, two key regional thoroughfares. A luxury residential property was added on CambridgePark Drive earlier this decade, and the office buildings are close to retail and restaurant options.