ADU · Westchester County
Can you build an ADU in Rye, NY?
City of Rye has 24 districts. 16 districts allow ADUs with occupancy restrictions, 7 do not. 1 district has incomplete data - verify with the building department at (914) 967-7372. Check your address to confirm the district that applies to your parcel:
What the Rye 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 |
|---|---|---|---|---|
| One-Family | 1 ac | — | 32 ft | Occupancy restricted |
| One-Family | 0.5 ac | — | 32 ft | Occupancy restricted |
| Residential Floodplain/Wetland | 10 ac | — | 35 ft | — |
| One-Family | 0.3333 ac | — | 28 ft | Occupancy restricted |
| One-Family | 0.2296 ac | — | 28 ft | Occupancy restricted |
| One-Family | 0.1607 ac | — | 28 ft | Occupancy restricted |
| One-Family | 0.1377 ac | — | 28 ft | Occupancy restricted |
| Garden Apartment | 0.1148 ac | — | 35 ft | Occupancy restricted |
| School and Church | 0.3333 ac | — | 35 ft | Occupancy restricted |
| Apartment | 0.0803 ac | — | 35 ft | Occupancy restricted |
| Two-Family | 0.0689 ac | — | 28 ft | Occupancy restricted |
| Apartment | 0.0574 ac | — | 40 ft | Occupancy restricted |
| Apartment | 0.0574 ac | — | 35 ft | Occupancy restricted |
| Senior Citizens Apartment | 1 ac | — | 50 ft | Occupancy restricted |
| Office Building | 7 ac | — | 45 ft | No |
| Interchange Office Building | 4 ac | — | 44 ft | No |
| Neighborhood Business | — | — | 35 ft | No |
| Central Business | — | — | 40 ft | Occupancy restricted |
| Beach Business | — | — | 35 ft | No |
| General Business | — | — | 40 ft | No |
| Waterfront Business | — | — | 35 ft | No |
| Conservation District | — | — | 35 ft | Occupancy restricted |
| Membership Club District | 7.5 ac | — | 35 ft | Occupancy restricted |
| Waterfront Recreation District | 7.5 ac | — | 35 ft | No |
ADUs vs. short-term rentals in Rye
No local short-term-rental law on record - which is not the same as permission for City of Rye. No local STR ordinance found as of Jun 2026; standard zoning and building codes apply. Westchester County hotel occupancy tax (3%) applies to rentals under 90 nights. 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 minimum0.0574–10 ac — an ADU still has to fit the district's lot and setback envelope.
- UtilityCon Edison territory.
- Building dept(914) 967-7372
- Last reviewed2026-06-08
ADU FAQ — Rye, NY
Are ADUs allowed in Rye, NY?
City of Rye has 24 districts. 16 districts allow ADUs with occupancy restrictions, 7 do not. 1 district has incomplete data - verify with the building department at (914) 967-7372. Check your address with the free ADU checker.
Do I need a special permit for an ADU in Rye?
No district in City of Rye requires a special-use permit for an ADU - 16 districts allow ADUs with occupancy restrictions, 7 do not. Site-plan review or a building permit may still apply.
Can I use an ADU as a short-term rental in Rye?
No local short-term-rental law on record - which is not the same as permission for City of Rye. 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 Rye
Permission is one question and budget is another. An 800 sq ft accessory unit here runs roughly $235k–310k 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 Rye, priced by size.
More on Rye: Full zoning for new construction · ADU build cost · House build cost · All Westchester County towns
ADU information for City of Rye is compiled from the municipal code (last reviewed 2026-06-08) 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 (914) 967-7372 before relying on any answer. Source: Offsite / Aldo zoning dataset, municipalData.js.