Zack M Ostroff Assoc., P.L.L.C. "Quality Architectural Plans" About Us: Zack M Ostroff Associates has enjoyed a successful business practice since 1995. We specialize in new custom homes, remodeling and additions, historical restoration and commercial projects. We work with homeowners, builders and contractors. Member of the American Institute of Building Designers Member of the National Council of Architectural Registration Boards