An industry source familiar with the transaction tellsGlobeSt.com that the deal will likely close in the next 60 days.The acquisition would be the second for the New York City realestate company, which also owns 125 High St., a two-tower officecomplex totaling 1.5 million sf. Tishman Speyer did not returncalls from GlobeSt.com seeking comment.

Robert Griffin, president of Cushman & Wakefield ofMassachusetts, who began marketing the property for Jamestownlastmonth, tells GlobeSt.com that the seller is close to completingthe transaction but has not yet finalized the paperwork on thedeal. "We're moving forward on the transaction but I can't confirmwho [the buyer] is."

If the deal is completed, the $518-million sales price would beone of the highest paid for an office property in Boston this year.And at $471 per sf, more than what most office buildings sold forin the city during 2005, recent sales figures show.