What the Troy zoning ordinance says about lot size and width, district by district. Section numbers link to the official ordinance.
A lot in R-1A with public sewer needs at least 21,780 square feet (half an acre) and 120 feet of width. A new dwelling needs at least 1,400 square feet of floor area (Section 4.06.C). Lots without public sewer follow a separate table row with larger minimums, up to 30,000 square feet of area and 150 feet of width depending on district (Section 4.06.C).
A lot in R-1B with public sewer needs at least 15,000 square feet and 100 feet of width. A new dwelling needs at least 1,400 square feet of floor area (Section 4.06.C). Lots without public sewer follow a separate table row with larger minimums, up to 30,000 square feet of area and 150 feet of width depending on district (Section 4.06.C).
A lot in R-1C with public sewer needs at least 10,500 square feet and 85 feet of width. A new dwelling needs at least 1,200 square feet of floor area (Section 4.06.C). Lots without public sewer follow a separate table row with larger minimums, up to 30,000 square feet of area and 150 feet of width depending on district (Section 4.06.C).
A lot in R-1D with public sewer needs at least 8,500 square feet and 75 feet of width. A new dwelling needs at least 1,000 square feet of floor area (Section 4.06.C). Lots without public sewer follow a separate table row with larger minimums, up to 30,000 square feet of area and 150 feet of width depending on district (Section 4.06.C).
A lot in R-1E with public sewer needs at least 7,500 square feet and 60 feet of width. A new dwelling needs at least 1,000 square feet of floor area (Section 4.06.C). Lots without public sewer follow a separate table row with larger minimums, up to 30,000 square feet of area and 150 feet of width depending on district (Section 4.06.C).
Density depends on the neighbors. A site that does not abut a single-family district may build up to 24 units per acre. A site abutting single-family is limited to 10 units per acre (Section 4.08.C).
Minimum unit floor areas: 600 square feet for an efficiency or one-bedroom unit, 800 for two bedrooms, 1,000 for three, 1,200 for four (Section 4.08.C). Common recreation space of 450 square feet per unit is required (Section 4.08.D.5).
Enter an address. We identify the zoning district and assemble what the ordinance says about it: permitted uses, dimensional rules, accessory structures, and the approval process.
District identification is free. The full brief is $79.