Built in 1989, 1150 18th St. has an assessed value of about $50 million. The office facility is currently 88% occupied by an array of strong tenants ranging from Halliburton Corp. to the Pew Research Center. The property would have undoubtedly commanded a great deal of attention if it had been put on the open market, but the sellers took a different approach. "We were asked by the clients to take it to market very quietly," Dalhstrom tells GlobeSt.com. "So we only went to one capable investor, and they were so excited about it, they jumped all over it."

Cambridge Co., which had been handling leasing and management activities at the building, served in an advisory role to A&A 1150 during the transaction, and will remain onboard in its leasing and management capacity under the new ownership.