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ADU · Sullivan County

Can you build an ADU in Mamakating, NY?

Town of Mamakating has 10 districts. 7 districts prohibit ADUs, 2 require a special-use permit, 1 allows them. Check your address to confirm the district that applies to your parcel:

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What the Mamakating code says

An accessory apartment has to sit inside an existing house designed for one family, so no detached unit is allowed anywhere in the town. Under § 199-6 it is available only in districts that permit a two-family dwelling, and it must meet the two-family standards.

Conditions the code attaches:

What the Mamakating 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
Village Adjacent Area 2 ac 50 / 50 / 50 ft 30 ft As of right
Airport Development 1 ac 50 / 25 / 25 ft 30 ft No
Planned Resort - Office Development 10 ac 50 / 50 / 50 ft 30 ft No
Ridge and Valley Protection Area 10 ac 50 / 50 / 50 ft 30 ft No
Mountain Greenbelt 10 ac 50 / 50 / 50 ft 30 ft No
Residential Agricultural 3 ac 50 / 40 / 50 ft 30 ft No
Burlingham Residential 2 ac 50 / 40 / 50 ft 30 ft No
Neighborhood Residential 2 ac 25 / 40 / 35 ft 30 ft Special permit
Lake Neighborhood Residential 2 ac 25 / 40 / 35 ft 30 ft No
Hamlet Center 1 ac 25 / 30 / 35 ft 30 ft Special permit

Village Adjacent Area - A home here needs 2 acres, on a lot 150 feet wide and 200 feet deep. Yards run 50 feet at the front, 50 feet at the rear, 50 feet on one side and 100 feet for both sides together. A building reaches 2.5 stories and 30 feet.

  • Development coverage, which counts paved and other installed impervious surfaces as well as buildings, is capped at 25% of the lot area.
  • With central water and sewer the lot falls to 1 acre, 100 feet wide and 100 feet deep, with 25 foot front and rear yards, 25 feet on one side and 50 feet for both.
  • A 2-family dwelling needs 4 acres, or 2 acres with central water and sewer on a lot 100 feet wide and 100 feet deep with a 25 foot front yard and a 35 foot rear yard.
  • Senior housing is a special use needing 5 acres, 200 feet of width, 300 feet of depth, 50 foot front and rear yards, 75 feet on one side, 150 feet for both and 35% coverage.
  • Through a transfer of development rights a dwelling with central water and sewer drops to 5,000 square feet, and a 2-family dwelling to 10,000 square feet.
  • In an average density subdivision the Planning Board may cut the lot to 40,000 square feet, which is 0.9183 acres, where soil tests support a septic system and a 50% reserve area.

Airport Development - A non-livestock agricultural farm operation, the first principal use the schedule lists here, needs 1 acre on a lot 150 feet wide and 200 feet deep, with a 50 foot front yard, a 25 foot rear yard, 25 feet on one side and 50 feet for both sides.

  • Development coverage, which counts paved and other installed impervious surfaces as well as buildings, is capped at 25% on that row, and a building reaches 2.5 stories and 30 feet.
  • No dwelling is a principal use here. The schedule lists an airport, aviation sales and repair, office and research, laboratory testing, supply yards and restaurants instead.
  • An airport needs 50 acres on a lot 500 feet wide and 750 feet deep, with 100 foot front and rear yards, 50 feet on one side and 100 feet for both.
  • Office and research takes 40,000 square feet and reaches 3 stories and 35 feet, and research, experimental and laboratory testing reaches 4 stories and 45 feet on the same lot area.
  • A livestock agricultural farm operation needs 7 acres, a 100 foot front yard, a 200 foot rear yard and 10% coverage.
  • Agribusiness is a special use needing 10 acres, 200 feet of width, 300 feet of depth, 75 foot yards, 150 feet for both sides, 4 stories and 45 feet.

Planned Resort - Office Development - A home here needs 10 acres, on a lot 200 feet wide and 300 feet deep. Yards run 50 feet at the front, 50 feet at the rear, 50 feet on one side and 100 feet for both sides together. A building reaches 2.5 stories and 30 feet.

  • Development coverage, which counts paved and other installed impervious surfaces as well as buildings, is capped at 5% of the lot area.
  • A planned residential development is a special use needing 25 acres, 300 feet of width, 400 feet of depth, 100 foot yards, 200 feet for both sides, 25% coverage, 3.5 stories and 40 feet.
  • A planned resort community is a principal permitted use needing 100 acres, and its bulk standards come from § 199-18 and Schedule II rather than from this one.
  • A golf course needs 75 acres and commercial outdoor recreation 25 acres, each with 100 foot front and rear yards and 200 feet for both sides.
  • A resort hotel or country inn is a special use needing 25 acres, 300 feet of width, 400 feet of depth and 25% coverage.
  • A non-livestock agricultural farm operation needs 1 acre with 25 foot yards, and a livestock one 7 acres with a 100 foot front yard and a 200 foot rear yard.

Ridge and Valley Protection Area - A home here needs 10 acres, on a lot 200 feet wide and 300 feet deep. Yards run 50 feet at the front, 50 feet at the rear, 50 feet on one side and 100 feet for both sides together. A building reaches 2.5 stories and 30 feet.

  • Development coverage, which counts paved and other installed impervious surfaces as well as buildings, is capped at 5% of the lot area.
  • Other uses in this district apply the environmental constraints of § 199-35 to the lot area the schedule lists before the lot area is settled.
  • A limited mixed-use resort development is a principal permitted use, and § 199-19 rather than the schedule carries its standards.
  • Wildlife, open space and game preserves need 25 acres and are held to 1% coverage, 1 story and 15 feet.
  • A country inn is a special use needing 50 acres, 500 feet of width, 750 feet of depth, a 100 foot front yard, a 200 foot rear yard, 20% coverage, 3.5 stories and 40 feet.
  • A bed-and-breakfast is a special use needing 10 acres, a 100 foot front yard, a 200 foot rear yard and 10% coverage.

Mountain Greenbelt - A home here needs 10 acres, on a lot 200 feet wide and 300 feet deep. Yards run 50 feet at the front, 50 feet at the rear, 50 feet on one side and 100 feet for both sides together. A building reaches 2.5 stories and 30 feet.

  • Development coverage, which counts paved and other installed impervious surfaces as well as buildings, is capped at 5% of the lot area.
  • A clustered lot takes the Neighborhood Residential standards with no town endorsed water or sewer: 2 acres, 100 feet wide, 150 feet deep, 25 foot front, 35 foot rear, 40 and 80 foot sides, 25% cover.
  • Yield may instead be read off slope: 1 unit per 3 acres at 0% to 3%, per 6 acres at 3% to 8%, per 9 acres at 8% to 15%, per 15 acres at 15% to 25% and on hydric soils.
  • Steeper ground thins out further, at 1 unit per 30 acres from 25% to 35% slope and 1 unit per 45 acres from 35% to 50%.
  • A subdivision of fewer than four lots, each with its own access to a public road and no new road proposed, is exempt from the average density route.
  • A rod and gun club needs 100 acres, and a commercial outdoor shooting range 100 acres with 800 feet of width and depth, a 300 foot rear yard and 600 feet for both sides.

Residential Agricultural - A home here needs 3 acres, on a lot 150 feet wide and 200 feet deep. Yards run 50 feet at the front, 50 feet at the rear, 40 feet on one side and 80 feet for both sides together. A building reaches 2.5 stories and 30 feet.

  • Development coverage, which counts paved and other installed impervious surfaces as well as buildings, is capped at 5% of the lot area.
  • The average density subdivision that cuts lot sizes in five other districts does not reach this one, so there is no reduced lot here.
  • A non-livestock agricultural farm operation needs 1 acre with 25 foot yards, and a livestock one 7 acres with a 100 foot front yard and a 200 foot rear yard.
  • Horticultural specialties need 5 acres, and an art gallery or artisan studio and shop 3 acres with 50 foot yards and 100 feet for both sides.
  • A bed-and-breakfast is a special use needing 3 acres, and a commercial dude ranch 25 acres with 100 foot front and rear yards.
  • Kennels are a special use needing 5 acres on a lot 300 feet wide and 300 feet deep, with 100 foot yards, 200 feet for both sides and 25% coverage.

Burlingham Residential - A home on well and septic here needs 2 acres, on a lot 150 feet wide and 200 feet deep. Yards run 50 feet at the front, 50 feet at the rear, 40 feet on one side and 80 feet for both sides together. A building reaches 2.5 stories and 30 feet.

  • Development coverage, which counts paved and other installed impervious surfaces as well as buildings, is capped at 25% of the lot area.
  • With central water and sewer the lot falls to 1 acre, 100 feet wide and 150 feet deep, with a 25 foot front yard, a 35 foot rear yard, 30 and 60 foot sides and 5% coverage.
  • The higher density only comes with a town endorsed water or sewer system; any other central utility earns no more than an individual well and subsurface disposal system would.
  • In an average density subdivision the Planning Board may cut the lot to 40,000 square feet, which is 0.9183 acres, where soil tests support a septic system and a 50% reserve area.
  • A non-livestock agricultural farm operation needs 1 acre with 25 foot yards, and a livestock one 7 acres with a 100 foot front yard and a 200 foot rear yard.
  • A restaurant is a special use needing 5 acres, and art galleries, museums, antiques and gift shops 2 acres with 50 foot yards and 100 feet for both sides.

Neighborhood Residential - A home on well and septic here needs 2 acres, on a lot 100 feet wide and 150 feet deep. Yards run 25 feet at the front, 35 feet at the rear, 40 feet on one side and 80 feet for both sides together. A building reaches 2.5 stories and 30 feet.

  • Development coverage, which counts paved and other installed impervious surfaces as well as buildings, is capped at 25% of the lot area.
  • With central water or sewer the lot falls to 30,000 square feet, 100 feet wide and 100 feet deep, with 25 foot front and rear yards, 25 feet on one side and 50 feet for both.
  • A 2-family dwelling without central water or sewer is a special use needing 2 acres, 150 feet of width, 200 feet of depth, 50 foot yards, 100 feet for both sides and 35% coverage.
  • Through a transfer of development rights a dwelling with central water and sewer drops to 10,000 square feet, and a 2-family dwelling to 20,000 square feet.
  • A planned residential development is a special use needing 25 acres, 300 feet of width, 400 feet of depth, 100 foot yards, 40% coverage, 3.5 stories and 40 feet.
  • In an average density subdivision the Planning Board may cut the lot to 40,000 square feet, which is 0.9183 acres, where soil tests support a septic system and a 50% reserve area.

Lake Neighborhood Residential - A home here needs 2 acres, on a lot 100 feet wide and 150 feet deep. Yards run 25 feet at the front, 35 feet at the rear, 40 feet on one side and 80 feet for both sides together. A building reaches 2.5 stories and 30 feet.

  • Development coverage, which counts paved and other installed impervious surfaces as well as buildings, is capped at 25% of the lot area.
  • In an average density subdivision the Planning Board may cut the lot to 40,000 square feet, which is 0.9183 acres, where soil tests support a septic system and a 50% reserve area.
  • The single-family dwelling is the only residential row the schedule gives this district, and no central water or sewer row shortens it.
  • A restaurant is a special use needing 2 acres, 150 feet of width, 200 feet of depth, 50 foot yards, 100 feet for both sides and 40% coverage.
  • Art galleries, museums, antiques and gift shops and a small retail convenience use are special uses needing 20,000 square feet, 100 feet of width and 100 feet of depth.
  • That retail convenience use is held to 2,000 square feet of gross floor area, allowed only on county or state roads, and barred from a previously approved residential subdivision.

Hamlet Center - A home on well and septic here needs 1 acre, on a lot 100 feet wide and 150 feet deep. Yards run 25 feet at the front, 35 feet at the rear, 30 feet on one side and 60 feet for both sides together. A building reaches 2.5 stories and 30 feet.

  • Development coverage, which counts paved and other installed impervious surfaces as well as buildings, is capped at 25% of the lot area.
  • With central water and sewer the lot falls to 20,000 square feet, 75 feet wide and 100 feet deep; with only one of the two it falls to 30,000 square feet on a 100 foot wide lot.
  • A 2-family dwelling with central water and sewer needs 40,000 square feet, and without either it is a special use needing 1.5 acres with 50 foot yards and 35% coverage.
  • Through a transfer of development rights a dwelling with central water and sewer drops to 5,000 square feet, and a 2-family dwelling to 10,000 square feet.
  • A micro-home on its own lot with central water and sewer needs 5,000 square feet, 25 feet of width, a 10 foot rear yard and 5 feet on one side, and reaches 2 stories and 26 feet.
  • In an average density subdivision the Planning Board may cut the lot to 40,000 square feet, which is 0.9183 acres, where soil tests support a septic system and a 50% reserve area.

ADUs vs. short-term rentals in Mamakating

Short-term-rental status not confirmed for Town of Mamakating. Whether the Town of Mamakating has a short term rental law in effect is not confirmed. A short term rental local law was proposed and went to public hearings in October and November 2024. Confirm the current rules with the building department before renting short term. 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

ADU FAQ — Mamakating, NY

Are ADUs allowed in Mamakating, NY?

Town of Mamakating has 10 districts. 7 districts prohibit ADUs, 2 require a special-use permit, 1 allows them. Check your address with the free ADU checker, or confirm with the building department at (845) 888-3030.

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

It depends on the district: 2 of 10 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 Mamakating?

Short-term-rental status not confirmed for Town of Mamakating. 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.

What an ADU costs to build in Mamakating

Permission is one question and budget is another. An 800 sq ft accessory unit here runs roughly $190k–250k 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 Mamakating, priced by size.

How we know this

Sections analyzed
Ch. 199 § 199-6 definition of accessory apartment; § 199-7C and § 199-8.1 closed list; Schedule I Table of Use and Bulk Requirements (199 Attachment 2), as amended in its entirety by L.L. No. 6-2019
Districts confirmed
10 of 10 — every mapped district.
Last reviewed
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.

ADU information for Town of Mamakating is compiled from the municipal code (last reviewed 2026-10-07) 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) 888-3030 before relying on any answer. Source: the Offsite / Aldo zoning dataset.

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