What it costs to build an ADU in Airmont, NY

Rural Residential - The side setbacks must add to at least 75 ft, so 30 ft on each side falls fifteen feet short. A minimum street frontage of 100 ft applies on top of the lot width.

• A freestanding place of worship has its own row by special use permit: 5 acres on 400 ft of width, 300 feet of street frontage, 100 ft to each side with 200 ft for the pair, and 25% coverage.
• The coverage shown is development coverage and counts parking lots, so it is not a building-footprint cap.
• The setbacks shown bind the principal building; accessory structures and projections keep required yards of 50 ft front, 10 ft side and 10 ft rear.
• A community residence or family and group care facility takes the same lot with a 20 ft side setback and a floor area ratio of 0.40.
• Agriculture, cemeteries, stables and riding academies need ten acres on four hundred feet of width at three percent coverage; a hospital or a camp needs ten acres, and a hospital may reach 45 ft.
• An educational institution with accessory housing needs ten acres and a two-hundred-and-fifty-foot front setback, and is held to two storeys or 30 ft.

Residential - The side setbacks must add to at least 70 ft, twenty feet more than 25 ft on each side would give. A minimum street frontage of 100 ft applies on top of the lot width.

• A freestanding place of worship has its own row by special use permit: 2 acres on 200 ft of width and 200 feet of street frontage, 100 ft from the front line, 50 ft each side, 75 ft rear.
• The coverage shown is development coverage and counts parking lots, so it is not a building-footprint cap.
• The setbacks shown bind the principal building; accessory structures and projections keep required yards of 50 ft front, 10 ft side and 10 ft rear.
• A community residence facility takes the same lot and setbacks at a floor area ratio of 0.40 and forty percent coverage.
• A school of general or religious instruction needs eighty thousand square feet on two hundred feet of width; a family or group care facility, fifty thousand on a hundred and seventy-five.
• An educational institution with accessory housing needs ten acres and a two-hundred-and-fifty-foot front setback, and is held to two storeys or 30 ft.

Residential - The side setbacks must add to at least 60 ft, ten feet more than 25 ft on each side would give. A minimum street frontage of 100 ft applies on top of the lot width.

• A freestanding place of worship has its own row by special use permit: 2 acres on 200 ft of width, 200 ft of street frontage, 100 ft from the front line, 50 ft each side, 75 ft rear and 40% coverage.
• The coverage shown is development coverage and counts parking lots, so it is not a building-footprint cap.
• The setbacks shown bind the principal building; accessory structures and projections keep required yards of 50 ft front, 10 ft side and 10 ft rear.
• A community residence facility takes the same lot and setbacks at a floor area ratio of 0.40.
• A school of general or religious instruction needs eighty thousand square feet; a family or group care facility, fifty thousand.
• An educational institution with accessory housing needs ten acres and a two-hundred-and-fifty-foot front setback, and is held to two storeys or 30 ft.

Residential - The side setbacks must add to at least 50 ft, ten feet more than 20 ft on each side would give. A minimum street frontage of 90 ft applies on top of the lot width.

• A freestanding place of worship has its own row by special use permit: 2 acres on 200 ft of width, 200 ft of street frontage, 100 ft from the front line, 50 ft each side, 75 ft rear and 40% coverage.
• The coverage shown is development coverage and counts parking lots, so it is not a building-footprint cap.
• The setbacks shown bind the principal building; accessory structures and projections keep required yards of 35 ft front, 10 ft side and 10 ft rear.
• A community residence facility takes the same lot and setbacks at a floor area ratio of 0.40.
• A school of general or religious instruction needs eighty thousand square feet on two hundred feet of width; a family or group care facility, forty thousand on a hundred and sixty.
• An educational institution with accessory housing needs ten acres and a two-hundred-and-fifty-foot front setback, and is held to two storeys or 30 ft.

Residential - A one-family semiattached house is permitted by right here under a different row of figures. A minimum street frontage of 85 ft applies on top of the lot width.

• A semiattached house takes 0.2296 acres and 62.5 ft of width, with its side setback rising to 20 ft but only 20 ft for the pair, so one wall may sit on the party line, and coverage rising to 55%.
• A freestanding place of worship has its own row by special use permit: 2 acres on 200 ft of width, 200 feet of street frontage, 100 ft from the front line, 50 ft each side and 75 ft rear.
• The coverage shown is development coverage and counts parking lots, so it is not a building-footprint cap.
• The setbacks shown bind the principal building; accessory structures and projections keep required yards of 35 ft front, 5 ft side and 5 ft rear.
• A community residence facility takes the detached lot at a floor area ratio of 0.40 and forty percent coverage.
• An educational institution with accessory housing needs ten acres and a two-hundred-and-fifty-foot front setback, and is held to two storeys or 30 ft.

Specialized Housing Residential - The figures shown are the row for senior citizen housing, and the height limit is not a figure in the table: it is set by § 210-102H in Article XII.

• Housing for the physically handicapped takes two acres on two hundred feet of width, at forty percent coverage, a floor area ratio of 0.30 and a height limit of 15 ft.
• A congregate care housing development takes ten acres on four hundred feet of width, with a hundred feet to the front and side lines and two hundred for the pair of sides.
• Congregate care housing may reach 45 ft, at thirty percent coverage and a floor area ratio of 0.20.
• A minimum street frontage of 250 ft applies on top of the lot width.
• The coverage shown is development coverage and counts parking lots, so it is not a building-footprint cap.
• An educational institution with accessory housing needs ten acres and a two-hundred-and-fifty-foot front setback, and is held to two storeys or 30 ft.

Neighborhood Shopping - The figures shown cover the ordinary shopfront uses: local convenience shops and shopping centres, local offices, medical and dental offices and clinics, libraries, museums, self-service laundromats and specialty shops. Other uses have their own rows.

• A child day-care centre or public utility building needs forty thousand square feet on a hundred and fifty feet of width, with a 75 ft front setback.
• A neighbourhood restaurant needs thirty thousand square feet on a hundred and fifty feet of width.
• A gasoline service station or automotive repair shop needs sixty thousand square feet on two hundred and fifty feet of width and is held to 25 ft of height.
• If a shopping centre over ten acres adjoins a residence district and includes a store over thirty-five thousand square feet, a hundred-and-fifty-foot buffer replaces side and rear yards and setbacks.
• A minimum street frontage of 100 ft applies on top of the lot width.
• The coverage shown is development coverage and counts parking lots, so it is not a building-footprint cap.

Village Center - No side setback is required, but one that is provided must be at least 10 ft. The figures shown cover restaurants and taverns, offices, retail stores and service establishments, libraries, museums and schools of special instruction.

• A shopping centre, hotel, motel or freestanding fast-food restaurant needs two acres on three hundred feet of width, with 50 ft on each side and a hundred for the pair.
• A child day-care centre or public utility building needs forty thousand square feet with a 75 ft front setback.
• An automobile rental facility, catering facility, social hall, animal kennel or veterinary hospital needs forty thousand square feet on two hundred feet of width.
• A gasoline station or automotive repair facility needs sixty thousand square feet on two hundred and fifty feet of width and is held to 25 ft of height.
• A minimum street frontage of 100 ft applies on top of the lot width.
• The coverage shown is development coverage and counts parking lots, so it is not a building-footprint cap.

Professional Office - No side setback is required, but one that is provided must be at least 10 ft. The figures shown cover professional and business offices, libraries, museums, art galleries, funeral chapels, banks and restaurants.

• An animal hospital needs forty thousand square feet on two hundred feet of width, with 20 ft on each side, 40 ft for the pair and a 35 ft front setback.
• A public utility building needs forty thousand square feet on a hundred and fifty feet of width, with a 75 ft front setback, and may reach 50 ft in height.
• A minimum street frontage of 100 ft applies on top of the lot width.
• The coverage shown is development coverage and counts parking lots, so it is not a building-footprint cap.
• Accessory structures and projections keep required yards of 20 ft at the front and 10 ft at the rear.
• An educational institution with accessory housing needs ten acres and a two-hundred-and-fifty-foot front setback, and is held to two storeys or 30 ft.

Laboratory-Office - The figures shown cover office buildings, laboratories, research facilities and office parks, medical and dental clinics, outdoor and commercial recreation, schools of special instruction, industrial uses, wholesaling, warehousing and prototype manufacturing.

• A hotel or motel needs two acres on three hundred feet of width, at seventy-five percent coverage, with 60 ft to the front line and 60 ft to the rear.
• A child day-care centre or public utility building needs forty thousand square feet on a hundred and fifty feet of width.
• A reservoir or standpipe needs ten acres on four hundred feet of width and is held to three percent coverage.
• A minimum street frontage of 100 ft applies on top of the lot width.
• The coverage shown is development coverage and counts parking lots, so it is not a building-footprint cap.
• The setbacks shown bind the principal building; accessory structures and projections keep required yards of 15 ft front, 20 ft side and 20 ft rear.

Planned Industry - The 80% coverage shown is development coverage and counts parking lots, so it is not a building-footprint cap. The figures cover office buildings, laboratories, medical and dental clinics, industrial uses, wholesaling, warehousing and public utility buildings.

• A commercial recreation facility or contractor's storage yard needs sixty thousand square feet on two hundred feet of width, with 75 ft on each side and a hundred and fifty for the pair.
• A freight or truck transfer terminal needs two acres on three hundred feet of width and is held to 35 ft of height.
• A reservoir or standpipe needs ten acres and is held to three percent coverage.
• A minimum street frontage of 100 ft applies on top of the lot width.
• The setbacks shown bind the principal building; accessory structures and projections keep required yards of 15 ft front, 20 ft side and 20 ft rear.
• An educational institution with accessory housing needs ten acres and a two-hundred-and-fifty-foot front setback, and is held to two storeys or 30 ft.