The owners of a Down River Road property are seeking permission to raze an existing two-family house and build two detached single-family homes there. The plan for 6 Down River Road will “contribute positively to the surrounding area and align with the zoning regulations,” according to a statement that accompanies a Special Permit application filed with the Planning & Zoning Commission. Each 2.5-story unit will offer 1,250 square feet of living space and a two-car garage, the application said. “The proposed structures, including buildings, walls and fences, as well as planned activities and landscaping, are meticulously designed to complement the surroundings without hindering adjacent land use or diminishing property values,” it said. “The decision to opt for detached units is in response to the lot’s narrowness, avoiding a large, incongruent structure.