ADU · Dutchess County

Can you build an ADU in Clinton, NY?

Town of Clinton has 9 districts. 7 districts allow ADUs with a special-use permit, 2 do not. Check your address to confirm the district that applies to your parcel:

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What the Clinton code says

An accessory unit, inside the house or detached, needs a special permit and site plan review in C, AR5, AR3, MR1, CR1, RH and H, and the owner must live in one of the units. It is prohibited in I and F.

Conditions the code attaches:

One unit per lot, with at most two bedrooms, no larger than 35% of the house's habitable space or 1,000 sq ft, whichever is smaller, and at least 400 sq ft.
A unit inside the house is barred in a house whose certificate of occupancy was issued after the town's zoning chapter took effect, with a narrow exception.
A detached unit must be in a garage, barn, gatehouse or similar building that legally exists already, and the lot needs twice the district's single-family acreage.
County Health Department approval of the water supply and septic system is required.
Converting a house that existed when the zoning chapter took effect into a two-family dwelling is a separate special permit, with one unit owner-occupied and twice the single-family acreage.

What the Clinton 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
Agricultural Residential 5-Acre	5 ac	100 / 50 / 75 ft	35 ft	Special permit
Agricultural Residential 3-Acre	3 ac	100 / 50 / 75 ft	35 ft	Special permit
Conservation Agricultural Residential	5 ac	100 / 50 / 75 ft	35 ft	Special permit
Hamlet	1 ac	45 / 17 / 50 ft	35 ft	Special permit
Residential Hamlet	1 ac	45 / 17 / 50 ft	35 ft	Special permit
Medium Density Residential	1 ac	75 / 17 / 50 ft	35 ft	Special permit
Clustered Residential	1 ac	75 / 17 / 50 ft	35 ft	Special permit
Office-Light Industry	3 ac	100 / 50 / 75 ft	50 ft	No
Floodplain	—	—	—	No

Agricultural Residential 5-Acre, Agricultural Residential 3-Acre - The minimum lot area applies per dwelling unit or establishment, so a second dwelling unit needs the same area again. At least 75% of the lot must be left as open space.

The front yard is measured from the center line of the road or right-of-way, not the property line, or from the nearest edge of a right-of-way wider than 60 ft (§ 250-23A).
On a corner lot every street frontage is a front yard, up to a maximum of two (§ 250-21A).
Minimum lot frontage is 40 ft, separate from the minimum lot width.
Parking areas have their own setbacks: 50 ft front, 10 ft side and 10 ft rear.

Conservation Agricultural Residential - The minimum lot area applies per dwelling unit or establishment, so a second dwelling unit needs the same area again. At least 75% of the lot must be left as open space.

The C district carries additional setback and other requirements under § 250-10.
The front yard is measured from the center line of the road or right-of-way, not the property line, or from the nearest edge of a right-of-way wider than 60 ft (§ 250-23A).
On a corner lot every street frontage is a front yard, up to a maximum of two (§ 250-21A).
Minimum lot frontage is 40 ft, separate from the minimum lot width.
Parking areas have their own setbacks: 50 ft front, 10 ft side and 10 ft rear.

Hamlet, Residential Hamlet - The two side yards must total at least 50 ft, with the narrower no less than 1/3 of that total. The minimum lot area applies per dwelling unit or establishment, so a second dwelling unit needs the same area again.

A corner lot needs 150 ft of width instead of 100 ft, and every street frontage on it is a front yard, up to a maximum of two (§ 250-21A).
At least 50% of the lot must be left as open space.
The front yard is measured from the center line of the road or right-of-way, not the property line, or from the nearest edge of a right-of-way wider than 60 ft (§ 250-23A).
Minimum lot frontage is 40 ft, separate from the minimum lot width.
Parking areas have their own setbacks: 50 ft front, 10 ft side and 10 ft rear.

Medium Density Residential - The two side yards must total at least 50 ft, with the narrower no less than 1/3 of that total. The minimum lot area applies per dwelling unit or establishment, so a second dwelling unit needs the same area again.

A corner lot needs 150 ft of width instead of 100 ft, and every street frontage on it is a front yard, up to a maximum of two (§ 250-21A).
At least 65% of the lot must be left as open space.
The front yard is measured from the center line of the road or right-of-way, not the property line, or from the nearest edge of a right-of-way wider than 60 ft (§ 250-23A).
Minimum lot frontage is 40 ft, separate from the minimum lot width.
Parking areas have their own setbacks: 50 ft front, 10 ft side and 10 ft rear.

Clustered Residential - The two side yards must total at least 50 ft, with the narrower no less than 1/3 of that total. The minimum lot area applies per dwelling unit or establishment, so a second dwelling unit needs the same area again.

A corner lot needs 175 ft of width instead of 100 ft, and every street frontage on it is a front yard, up to a maximum of two (§ 250-21A).
At least 65% of the lot must be left as open space.
The front yard is measured from the center line of the road or right-of-way, not the property line, or from the nearest edge of a right-of-way wider than 60 ft (§ 250-23A).
Minimum lot frontage is 40 ft, separate from the minimum lot width.
Parking areas have their own setbacks: 50 ft front, 10 ft side and 10 ft rear.

Office-Light Industry - Where the lot meets the frontage requirement with direct access on an existing state or county roadway, § 250-14C(1) drops the minimum lot to 1 acre, with a 60 ft front yard, 25 ft side, 50 ft rear and 150 ft lot width.

Where an industrial lot abuts a residential lot or district, every permitted use and associated activity must be set back 200 ft with a landscaped buffer inside it (§ 250-61).
Parking areas have their own setbacks of 125 ft front, 20 ft side and 20 ft rear, or 50, 10 and 10 ft where the 1-acre minimum applies.
At least 30% of the lot must be left as open space.
The minimum lot area applies per dwelling unit or establishment, so a second one needs the same area again.
The front yard is measured from the center line of the road or right-of-way, or from the nearest edge of a right-of-way wider than 60 ft (§ 250-23A).
On a corner lot every street frontage is a front yard, up to a maximum of two (§ 250-21A).

Floodplain - No dwelling units or establishments are permitted in F. The district covers the flood hazard area on the Town's current Federal Insurance Administration Flood Hazard Boundary Map, so its boundary moves when that map is revised (§ 250-5).

ADUs vs. short-term rentals in Clinton

Short-term rentals allowed with local rules for Town of Clinton. Short-term rentals in the Town of Clinton are regulated under § 250-69.1 of the Zoning Law. Confirm the requirements with the Building Department before counting on rental income. 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 minimum1–5 ac — an ADU still has to fit the district's lot and setback envelope.
UtilityCentral Hudson territory.
Zoning codeecode360.com/11844501
Building dept(845) 266-5230

ADU FAQ — Clinton, NY

Are ADUs allowed in Clinton, NY?

Town of Clinton has 9 districts. 7 districts allow ADUs with a special-use permit, 2 do not. Check your address with the free ADU checker, or confirm with the building department at (845) 266-5230.

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

It depends on the district: 7 of 9 require a special-use permit, the rest do not. Check the district that applies to your parcel before you design.

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

Short-term rentals allowed with local rules for Town of Clinton. 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 Clinton

Permission is one question and budget is another. An 800 sq ft accessory unit here runs roughly $210k–275k 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 Clinton, priced by size.

How we know this

Sections analyzed: 250 Attachment 1 Schedule of Use Regulations, accessory uses table (amended through L.L. No. 4-2024); § 250-29 Accessory dwelling units; § 250-76 Two-family dwellings; § 250-3 Zoning districts
Districts confirmed: 9 of 9 — every mapped district.
Last reviewed: 2026-08-16
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 Clinton: Full zoning for new construction · ADU build cost · House build cost · ADU rules across Dutchess County · All Dutchess County towns

ADU information for Town of Clinton is compiled from the municipal code (last reviewed 2026-08-16) 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) 266-5230 before relying on any answer. Source: the Offsite / Aldo zoning dataset.