Stanley M. Seligson Properties has worked closely with the City of Norwalk Redevelopment Agency on its urban renewal project. The company specializes in real estate development and services and owns and manages numerous properties, mainly in Fairfield County. Its projects include office, retail, medical and light industrial buildings. Services include acquisition, development, site planning, financing, construction, leasing and property management. Another division of the company specializes in managing and leasing billboards on state highways and roads. Seligson Properties also owns Olympia Construction.