ADU · Sullivan County
Can you build an ADU in Bethel, NY?
Town of Bethel has 12 districts. All districts prohibit ADUs. Check your address to confirm the district that applies to your parcel:
What the Bethel 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 Development District | 5 ac | 75 / 25 / 50 ft | 35 ft | No |
| Agricultural District | 3 ac | 75 / 25 / 50 ft | 35 ft | No |
| Agricultural-Rural District | 3 ac | 75 / 25 / 50 ft | 35 ft | No |
| Commercial Route 17B District | 1 ac | 25 / 25 / 50 ft | 35 ft | No |
| Commercial Service District | 0.5 ac | 25 / 10 / 25 ft | 35 ft | No |
| Forest Conservation District | 5 ac | 75 / 25 / 50 ft | 35 ft | No |
| Gateway Route 17B District | 2 ac | 25 / 10 / 25 ft | 35 ft | No |
| Hamlet Route 17B District | 0.5 ac | 25 / 10 / 25 ft | 35 ft | No |
| Planned Area District | 0.5 ac | 25 / 10 / 25 ft | 35 ft | No |
| Residential Route 17B District | 3 ac | 75 / 25 / 50 ft | 35 ft | No |
| Rural Development District | 2 ac | 50 / 25 / 50 ft | 35 ft | No |
| Rural Development-Rural District | 2 ac | 50 / 25 / 50 ft | 35 ft | No |
ADUs vs. short-term rentals in Bethel
Short-term-rental status not confirmed for Town of Bethel. Town drafted an STR local law in 2023 and held a public hearing in April 2023; no confirmed adoption vote found as of Jun 2026. Contact Town Hall to confirm current status. 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 minimum0.5–5 ac — an ADU still has to fit the district's lot and setback envelope.
- UtilityNYSEG territory.
- Building dept(845) 583-4350
- Last reviewed2026-08-16
ADU FAQ — Bethel, NY
Are ADUs allowed in Bethel, NY?
Town of Bethel has 12 districts. All districts prohibit ADUs. Check your address with the free ADU checker, or confirm with the building department at (845) 583-4350.
Do I need a special permit for an ADU in Bethel?
No. No district in Town of Bethel permits an ADU, so there is no permit to apply for. Codes change, so verify with the building department at (845) 583-4350 before ruling it out.
Can I use an ADU as a short-term rental in Bethel?
Short-term-rental status not confirmed for Town of Bethel. 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 Bethel
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 Bethel, priced by size.
More on Bethel: Full zoning for new construction · ADU build cost · House build cost · All Sullivan County towns
ADU information for Town of Bethel 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) 583-4350 before relying on any answer. Source: Offsite / Aldo zoning dataset, municipalData.js.