Donald B. Edwards, former president of Marlborough Development Corp., has joined Larwin Co. as president of its single-family housing company.
He assumes Michael I. Keston's job of directing the firm's construction operations, including the development and sale of about 800 homes during the next 12 months. Keston is now Larwin Co.'s chief executive officer.
Edwards began his career in real estate development at Levitt & Sons in 1961. He became president of Marlborough in 1981.