ADU · Rockland County
Can you build an ADU in Chestnut Ridge, NY?
Village of Chestnut Ridge has 13 districts. 8 districts allow ADUs with occupancy restrictions, 5 do not. Check your address to confirm the district that applies to your parcel:
What the Chestnut Ridge 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 (Use Group h) | 1.15 ac | 50 / 30 / 50 ft | 35 ft | Occupancy restricted |
| Residential (Use Group m) | 0.92 ac | 50 / 25 / 50 ft | 35 ft | Occupancy restricted |
| Residential (Use Group q) | 0.8 ac | 50 / 25 / 50 ft | 35 ft | Occupancy restricted |
| Residential (Use Group t) | 0.57 ac | 35 / 20 / 35 ft | 35 ft | Occupancy restricted |
| Residential (Use Group x.2) | 0.46 ac | 35 / 15 / 35 ft | 35 ft | Occupancy restricted |
| Residential (Use Group x.1) | 0.34 ac | 35 / 15 / 35 ft | 35 ft | Occupancy restricted |
| Residential Infill (Use Group x.1) | 0.34 ac | 35 / 15 / 35 ft | 35 ft | Occupancy restricted |
| Residential (Use Group x.3) | 0.23 ac | 35 / 15 / 35 ft | 35 ft | Occupancy restricted |
| Neighborhood Shopping (Use Group B - no side setback required) | 0.46 ac | 30 / 0 / 25 ft | 30 ft | No |
| Professional Office (Use Group B - no side setback required) | 0.46 ac | 30 / 0 / 25 ft | 30 ft | No |
| Professional Office Residential (Use Group K) | 0.46 ac | 30 / 20 / 25 ft | 25 ft | No |
| Laboratory-Office (Use Group J) | 1.38 ac | 75 / 75 / 75 ft | 35 ft | No |
| Regional Shopping (Use Group M - front setback 40 ft for pads, 50 ft for the main building) | 15 ac | 40 / 50 / 40 ft | 35 ft | No |
ADUs vs. short-term rentals in Chestnut Ridge
Short-term-rental status not confirmed for Village of Chestnut Ridge. Short-term rental status not confirmed for the Village of Chestnut Ridge — Chapter 290 does not address transient rental, and no separate local STR law was found in a 2026-07-21 search of village and county sources. Absence of a found law is NOT permission: call the Building Department at (845) 425-8283 to confirm before listing a property. Separately, since 2025 New York State requires every short-term-rental host to register the unit with the State through the county registry, regardless of what the municipality allows. 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 minimum0.23–1.15 ac — an ADU still has to fit the district's lot and setback envelope.
- UtilityOrange & Rockland territory.
- Building dept(845) 425-8283
- Last reviewed2026-07-21
ADU FAQ — Chestnut Ridge, NY
Are ADUs allowed in Chestnut Ridge, NY?
Village of Chestnut Ridge has 13 districts. 8 districts allow ADUs with occupancy restrictions, 5 do not. Check your address with the free ADU checker, or confirm with the building department at (845) 425-8283.
Do I need a special permit for an ADU in Chestnut Ridge?
No district in Village of Chestnut Ridge requires a special-use permit for an ADU - 8 districts allow ADUs with occupancy restrictions, 5 do not. Site-plan review or a building permit may still apply.
Can I use an ADU as a short-term rental in Chestnut Ridge?
Short-term-rental status not confirmed for Village of Chestnut Ridge. 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 Chestnut Ridge
Permission is one question and budget is another. An 800 sq ft accessory unit here runs roughly $225k–295k 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 Chestnut Ridge, priced by size.
More on Chestnut Ridge: Full zoning for new construction · ADU build cost · House build cost · All Rockland County towns
ADU information for Village of Chestnut Ridge is compiled from the municipal code (last reviewed 2026-07-21) 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) 425-8283 before relying on any answer. Source: Offsite / Aldo zoning dataset, municipalData.js.