ADU · Ulster County
Can you build an ADU in Marbletown, NY?
Town of Marbletown has 11 districts. 6 districts allow ADUs with occupancy restrictions, 3 require a special-use permit, 2 do not. Check your address to confirm the district that applies to your parcel:
What the Marbletown 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-4 (A-4) | 4 ac | 40 / 30 / 30 ft | 35 ft | Occupancy restricted |
| Agricultural-3 (A-3) | 3 ac | 40 / 30 / 30 ft | 35 ft | Occupancy restricted |
| Agricultural-2 (A-2) | 3 ac | 40 / 30 / 30 ft | 35 ft | Occupancy restricted |
| Residential-1 (R-1) | 3 ac | 40 / 30 / 30 ft | 35 ft | Occupancy restricted |
| Residential-3 (R-3) | 1 ac | 40 / 30 / 30 ft | 35 ft | Occupancy restricted |
| Scenic Resources (SR) | 1 ac | 40 / 30 / 30 ft | 35 ft | Occupancy restricted |
| Business-1 Enhanced (B-1/E) | 1 ac | 20 / 12 / 30 ft | — | Special permit |
| Business-1 Node (B-1/N) | 1 ac | 40 / 30 / 50 ft | — | Special permit |
| Business-2 (B-2) | 1 ac | 40 / 30 / 30 ft | 35 ft | Special permit |
| Industrial-1 (I-1) | — | 40 / 30 / 30 ft | 25 ft | No |
| Industrial/Business (I/B) | 1 ac | 40 / 30 / 30 ft | — | No |
Agricultural-4 (A-4), Agricultural-3 (A-3), Agricultural-2 (A-2), Residential-1 (R-1), Residential-3 (R-3) — The residential column is "Minimum Lot Area Per Dwelling Unit", so the figure is the land each unit requires. Front yard is measured from the edge of a public right-of-way, or where that right-of-way is under 50 ft wide, from a line 25 ft from and parallel to its centre line. For a private right-of-way, private road or shared driveway it is measured from a line 10 ft from the centre line (schedule note 1).
Scenic Resources (SR) — The residential column is "Minimum Lot Area Per Dwelling Unit", so the figure is the land each unit requires. Front yard is measured from the edge of a public right-of-way, or where that right-of-way is under 50 ft wide, from a line 25 ft from and parallel to its centre line. For a private right-of-way, private road or shared driveway it is measured from a line 10 ft from the centre line (schedule note 1). Mixed residential and business district with scenic overlay standards.
Business-1 Enhanced (B-1/E), Industrial/Business (I/B) — The residential column is "Minimum Lot Area Per Dwelling Unit", so the figure is the land each unit requires. Maximum height is 3 1/2 stories; the schedule states no figure in feet. Front yard is measured from the edge of a public right-of-way, or where that right-of-way is under 50 ft wide, from a line 25 ft from and parallel to its centre line. For a private right-of-way, private road or shared driveway it is measured from a line 10 ft from the centre line (schedule note 1).
Business-1 Node (B-1/N) — The residential column is "Minimum Lot Area Per Dwelling Unit", so the figure is the land each unit requires. Maximum height is 2 1/2 stories; the schedule states no figure in feet. Front yard is measured from the edge of a public right-of-way, or where that right-of-way is under 50 ft wide, from a line 25 ft from and parallel to its centre line. For a private right-of-way, private road or shared driveway it is measured from a line 10 ft from the centre line (schedule note 1).
Business-2 (B-2) — THE BASE ROW IS "B-2 Residential". The schedule prints B-2 as two separate rows and the nonresidential one has its own lot area, width, front and rear yards and coverage, and a 2 1/2 story height limit with no figure in feet. The residential column is "Minimum Lot Area Per Dwelling Unit", so the figure is the land each unit requires. Front yard is measured from the edge of a public right-of-way, or where that right-of-way is under 50 ft wide, from a line 25 ft from and parallel to its centre line. For a private right-of-way, private road or shared driveway it is measured from a line 10 ft from the centre line (schedule note 1).
Industrial-1 (I-1) — Residential use is NOT PERMITTED in I-1 — the schedule prints "Not permitted" in the residential lot column, and the 40,000 sq ft / 200 ft figures in the base row are the nonresidential standard. An I-1 District may be established in an A District only by an amendment to the Zoning Map under § 200-40 (schedule note 4). Front yard is measured from the edge of a public right-of-way, or where that right-of-way is under 50 ft wide, from a line 25 ft from and parallel to its centre line. For a private right-of-way, private road or shared driveway it is measured from a line 10 ft from the centre line (schedule note 1).
ADUs vs. short-term rentals in Marbletown
Short-term rentals allowed with registration for Town of Marbletown. STR permit required. Town of Marbletown has adopted STR regulations. Contact Building Dept at (845) 687-7500 to confirm current permit requirements, fees, and any night caps before proceeding. 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. Municipal source
Good to know
- Residential lot minimum1–4 ac — an ADU still has to fit the district's lot and setback envelope.
- Energy codeNew York stretch energy code adopted (2022) — applies to new ADU construction.
- UtilityCentral Hudson territory.
- Zoning codeecode360.com/MA1321
- Building dept(845) 687-7500
- Last reviewed2026-08-16
ADU FAQ — Marbletown, NY
Are ADUs allowed in Marbletown, NY?
Town of Marbletown has 11 districts. 6 districts allow ADUs with occupancy restrictions, 3 require a special-use permit, 2 do not. Check your address with the free ADU checker, or confirm with the building department at (845) 687-7500.
Do I need a special permit for an ADU in Marbletown?
It depends on the district: 3 of 11 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 Marbletown?
Short-term rentals allowed with registration for Town of Marbletown. 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 Marbletown
Permission is one question and budget is another. An 800 sq ft accessory unit here runs roughly $200k–265k 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 Marbletown, priced by size.
More on Marbletown: Full zoning for new construction · ADU build cost · House build cost · All Ulster County towns
ADU information for Town of Marbletown 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) 687-7500 before relying on any answer. Source: Offsite / Aldo zoning dataset, municipalData.js.