A feasibility study by C.B. Richard Ellis, a commercial realtor, showed that potential sales for the Riverwalk could amount to nearly $50 million a year.

His father is a commercial realtor at Crane Realty in Los Angeles.

Kevin Geenty, head of the Geenty Group, commercial realtors in Branford, brought Medtronics and Concept Park together.

"Activity has finally come to Connecticut," said Nicholas Morizio, president of Colliers, Dow & Condon, commercial realtors in Hartford.

"I'm hoping that when commercial realtors close a deal, they could buy a tree from the elm bank and place it near the property, if it's appropriate, or elsewhere in the city."

Despite the antidevelopment history of the town, commercial realtors say interest in Oxford has increased in the last several weeks.

Speaking as a commercial realtor, Black Rock will be a much bigger area to play in.

But Cushman & Wakefield, another commercial realtor, estimates 13.3 percent.

Mr. Mondello urged commercial realtors in Nassau County to pepper the General Services Administration for applications.

"There has never been a supply of luxury apartments here," said John Keogh, a senior broker at Traub & Company, commercial realtors.