ADU · Sullivan County
Can you build an ADU in Forestburgh, NY?
Town of Forestburgh has 5 districts. All districts prohibit ADUs. Check your address to confirm the district that applies to your parcel:
What the Forestburgh 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 Residential District | 2.3 ac | 75 / 50 / 100 ft | 30 ft | No |
| Resource Conservation District | 5 ac | 150 / 50 / 150 ft | 30 ft | No |
| Business District (B1) | 2.3 ac | 75 / 50 / 100 ft | 30 ft | No |
| Business District (B2) | 2.3 ac | 75 / 50 / 100 ft | 30 ft | No |
| Business District (B3) | 2.3 ac | 75 / 50 / 100 ft | 30 ft | No |
ADUs vs. short-term rentals in Forestburgh
Short-term rentals allowed with local rules for Town of Forestburgh. Town of Forestburgh adopted STR regulations as part of Local Law No. 3-2023 (effective November 2, 2023) requiring annual permits, a $500 inspection fee, and a $25 permit fee upon passing; STRs may not adversely affect residential character. 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 minimum2.3 ac — an ADU still has to fit the district's lot and setback envelope.
- UtilityNYSEG territory.
- Building dept(845) 794-0611
- Last reviewed2026-08-16
ADU FAQ — Forestburgh, NY
Are ADUs allowed in Forestburgh, NY?
Town of Forestburgh has 5 districts. All districts prohibit ADUs. Check your address with the free ADU checker, or confirm with the building department at (845) 794-0611.
Do I need a special permit for an ADU in Forestburgh?
No. No district in Town of Forestburgh permits an ADU, so there is no permit to apply for. Codes change, so verify with the building department at (845) 794-0611 before ruling it out.
Can I use an ADU as a short-term rental in Forestburgh?
Short-term rentals allowed with local rules for Town of Forestburgh. 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 Forestburgh
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 Forestburgh, priced by size.
More on Forestburgh: Full zoning for new construction · ADU build cost · House build cost · All Sullivan County towns
ADU information for Town of Forestburgh 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) 794-0611 before relying on any answer. Source: Offsite / Aldo zoning dataset, municipalData.js.