Abt Associates is an internationally known research and consulting firm that moved its operations to 55 Wheeler St. soon after being founded by namesake Clark Abt in 1965. "It seems like they have been there forever," one veteran Cambridge broker acknowledges, but the source says Abt officials have occasionally explored alternative venues. Abt has an office in Lexington as well, part of a global workforce exceeding 1,000 professionals. The original Cambridge space was expanded several times from 1965 to 1980.

A real estate investor familiar with 55 Wheeler St. describes the property as well-maintained but somewhat outmoded in the format of low-slung buildings interconnected by passageways. The site is about 5.5 acres, says the investor. "It has a nice campus feel to it," says the source who envisions a redevelopment as a likely strategy going forward. Abt Associates had initially sought a sale-leaseback arrangement, says the investor, but it is unclear whether the tenant did commit to remain at the site for any period.

The disposition of 55 Wheeler St. was orchestrated by Grubb & Ellis investment sales specialist Phil Giunta along with colleague George Nugent. The brokerage team "did a great job holding that deal together," relays G&E VP of investment sales Anthony Biette, challenging given the market disruption caused by the credit crunch that has doomed several transactions in recent months. NBF VP Robert Kirschner and senior acquisitions analyst Jay Hirsh negotiated the agreement for 55 Wheeler St. on behalf of their firm. Efforts to contact Abt and NBF were unsuccessful by press deadline. Biette referred inquiries about specifics of the sale to Giunta, who also was not available.