A plan or plans showing the proposed grading of the tract and the proposed location, dimensions, materials and type of construction of streets, common drives, parking areas, walks, paved areas, utilities, emergency accessways, easements, and the location and outline of all proposed buildings and structures, including, but not limited to, dwellings, garages, and any accessory structures thereto. If the proposed senior housing community is to be constructed in separate phases, this plan or plans shall clearly indicate the construction phases proposed.