ADU · Orange County

Can you build an ADU in Hamptonburgh, NY?

Town of Hamptonburgh has 9 districts. All districts prohibit ADUs. Check your address to confirm the district that applies to your parcel:

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What the Hamptonburgh code says

An accessory dwelling unit is not a permitted accessory use in any district of the Town of Hamptonburgh.

Conditions the code attaches:

Under § 150-23 a residence may keep not more than two nontransient boarders or roomers, which is room rental inside the house, not a separate unit.
Building department: (845) 427-2424.

What the Hamptonburgh code indicates by district

The table below shows how each district treats ADUs, alongside the lot and setback standards that govern a second unit. District boundaries and conditions vary, so treat this as a starting point and confirm the district that applies to your parcel.

District	Min lot	Setbacks F / S / R	Max height	ADU
Rural Preserve	4 ac	150 / 90 / 150 ft	35 ft	No
Low-Density Single-Family Residential	3 ac	125 / 80 / 125 ft	35 ft	No
Medium-Density Single-Family Residential	2 ac	100 / 70 / 100 ft	35 ft	No
Hamlet Residential/Commercial	0.23 ac	40 / 15 / 40 ft	35 ft	No
Neighborhood Business	0.46 ac	50 / 20 / 40 ft	35 ft	No
Industrial	0.92 ac	80 / 30 / 30 ft	35 ft	No
Industrial Park	0.92 ac	80 / 30 / 30 ft	35 ft	No
Light Urban Industrial	0.92 ac	80 / 30 / 30 ft	35 ft	No
Office/Highway Commercial	0.92 ac	50 / 30 / 60 ft	35 ft	No

Rural Preserve - A lot also needs at least 325 feet of road frontage, a separate requirement from lot width. The 11% total coverage cap counts buildings together with drives, parking and every other developed surface, while the 4% cap is the building footprint alone.

A day-care centre or veterinary clinic needs at least five acres.
A church, school, convalescent or nursing home needs at least five acres and a special use permit from the Town Board.
Agriculture, cemeteries, outdoor recreation, sand and soil extraction, stables, riding academies and golf courses need at least ten acres, with front and rear yards of at least two hundred feet.

Low-Density Single-Family Residential - A lot also needs at least 300 feet of road frontage, a separate requirement from lot width. The 12% total coverage cap counts buildings together with drives, parking and every other developed surface, while the 5% cap is the building footprint alone.

A church or school needs at least two acres on at least a hundred and seventy-five feet of width, with yards of at least seventy-five feet.
A cemetery accessory to a place of worship needs at least three acres, and agriculture at least ten.

Medium-Density Single-Family Residential - A lot also needs at least 250 feet of road frontage, a separate requirement from lot width. The 15% total coverage cap counts buildings together with drives, parking and every other developed surface, while the 6% cap is the building footprint alone.

A church or school also needs at least two acres, but on at least a hundred and seventy-five feet of width, with side yards of at least thirty-five feet.
A cemetery accessory to a place of worship needs at least three acres, and agriculture at least ten.

Hamlet Residential/Commercial - The lot minimum shown assumes both public water and public sewer. With only one of the two a lot needs at least twenty thousand square feet, and with neither at least forty thousand.

A two-family house needs at least twenty thousand square feet with public water or sewer service, and at least eighty thousand without.
A funeral parlour, or a local shopping centre of up to twenty thousand square feet of floor area, needs at least sixty thousand square feet of land, with development coverage up to sixty percent.
A hotel, motel, nightclub or tavern needs at least eighty thousand square feet, multiple dwellings at least two hundred thousand, and agriculture at least four hundred thousand.
A lot also needs at least 80 feet of road frontage, a separate requirement from lot width.
The 50% total coverage cap counts buildings together with drives, parking and every other developed surface, while the 25% cap is the building footprint alone.

Neighborhood Business - A lot also needs at least 70 feet of road frontage, a separate requirement from lot width. The 30% total coverage cap counts buildings together with drives, parking and every other developed surface, while the 15% cap is the building footprint alone.

The figures shown cover offices and retail only up to twenty thousand square feet of building floor area.
A funeral parlour, a local shopping centre of up to twenty thousand square feet, a church or a school needs at least forty thousand square feet, with a rear yard of at least sixty feet.
A nonresidential hotel or motel needs at least eighty thousand square feet on at least a hundred and fifty feet of width.
A hotel or motel may cover up to thirty-three percent in buildings and sixty percent in development.
Agricultural and horticultural operations need at least two hundred thousand square feet.

Industrial - A lot also needs at least 105 feet of road frontage, a separate requirement from lot width. The 70% total coverage cap counts buildings together with drives, parking and every other developed surface, while the 35% cap is the building footprint alone.

Offices and a crematorium need at least eighty thousand square feet on at least two hundred feet of width, with at least a hundred feet to the front and fifty feet to each side.
Motor vehicle sales need at least a hundred thousand square feet, with a rear yard of at least eighty feet.

Industrial Park - A lot also needs at least 150 feet of road frontage, a separate requirement from lot width. The 70% total coverage cap counts buildings together with drives, parking and every other developed surface, while the 35% cap is the building footprint alone.

The figures shown cover offices and permitted recreation facilities.
Motor vehicle sales, a nightclub or tavern, and wholesale, warehouse and distribution need at least eighty thousand square feet on at least two hundred feet of width.
Those uses also need at least a hundred feet to the front and fifty to each side.
Scientific research and development laboratories need at least a hundred thousand square feet on at least two hundred and fifty feet of width, with development coverage up to sixty percent.
Agriculture and golf courses need at least two hundred thousand square feet, with a rear yard of at least a hundred and fifty feet.

Light Urban Industrial - A lot also needs at least 105 feet of road frontage, a separate requirement from lot width. The 70% total coverage cap counts buildings together with drives, parking and every other developed surface, while the 35% cap is the building footprint alone.

Office/Highway Commercial - A lot also needs at least 70 feet of road frontage, a separate requirement from lot width. The side yards must total at least 70 feet, so one side must be at least forty feet.

The 50% total coverage cap counts buildings together with drives, parking and every other developed surface, while the 25% cap is the building footprint alone.
The figures shown cover offices, retail and personal service only up to ten thousand square feet of building floor area.
A nonresidential hotel or motel, or a nursing or convalescent home, needs at least a hundred thousand square feet on at least a hundred and fifty feet of width.
Agricultural and horticultural operations, regulated public utility structures and permitted recreational uses need at least two hundred thousand square feet on at least three hundred feet of width.
Those uses also need a front yard of at least a hundred feet.

ADUs vs. short-term rentals in Hamptonburgh

No local short-term-rental law on record - which is not the same as permission for Town of Hamptonburgh. The Town of Hamptonburgh has no local short-term rental law, and that is not the same as permission. Confirm with the building department before counting on the use. These are separate questions from whether you can build an ADU — a unit you're allowed to add isn't automatically one you're allowed to rent nightly, so check both.

Good to know

Residential lot minimum2–4 ac — an ADU still has to fit the district's lot and setback envelope.
UtilityOrange & Rockland territory.
Zoning codeecode360.com/HA0701
Building dept(845) 427-2424

ADU FAQ — Hamptonburgh, NY

Are ADUs allowed in Hamptonburgh, NY?

Town of Hamptonburgh has 9 districts. All districts prohibit ADUs. Check your address with the free ADU checker, or confirm with the building department at (845) 427-2424.

Do I need a special permit for an ADU in Hamptonburgh?

No. No district in Town of Hamptonburgh permits an ADU, so there is no permit to apply for. Codes change, so verify with the building department at (845) 427-2424 before ruling it out.

Can I use an ADU as a short-term rental in Hamptonburgh?

No local short-term-rental law on record - which is not the same as permission for Town of Hamptonburgh. ADU occupancy and short-term-rental rules are separate: an ADU you can build isn't automatically one you can rent nightly. Confirm both before you count on STR income.

Run the free ADU check for your parcel →

What an ADU costs to build in Hamptonburgh

Permission is one question and budget is another. An 800 sq ft accessory unit here runs roughly $205k–270k at a standard finish, and the per-square-foot rate comes in above a full house because the kitchen, bath, panel and heating plant cost the same either way. See the full cost to build an ADU in Hamptonburgh, priced by size.

How we know this

Sections analyzed: § 150-23 · § 150-2B
Districts confirmed: 9 of 9 — every mapped district.
Last reviewed: 2026-07-08
Not covered here: Overlay districts, the zoning map, and any conditions attached to an individual parcel. Size limits and owner-occupancy terms sit in the code section above, not in this summary.

More on Hamptonburgh: Full zoning for new construction · ADU build cost · House build cost · ADU rules across Orange County · All Orange County towns

ADU information for Town of Hamptonburgh is compiled from the municipal code (last reviewed 2026-07-08) and provided for decision-support only — not legal or architectural advice. ADU eligibility, size, owner-occupancy and permit conditions vary by district and often carry exceptions; verify with the building department at (845) 427-2424 before relying on any answer. Source: the Offsite / Aldo zoning dataset.