The Griffin Co. said it will develop an 11-story, Class-A office condominium building called 1820 Peachtree at the intersection of Peachtree Street and Palisades Road. Griffin acquired the 1.6-acre tract in May from CLC Enterprises and plans to begin construction on the $20 million, 145,000-square-foot building in the first quarter of 2004. The developer is currently offering pre-construction sales and currently is in serious discussions with potential tenants requiring at least two floors of office space. A first quarter 2005 delivery is planned.