ADU · Rockland County
Can you build an ADU in Orangetown, NY?
Town of Orangetown has 8 districts. 4 districts prohibit ADUs, 4 allow them with occupancy restrictions. Check your address to confirm the district that applies to your parcel:
What the Orangetown 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 Residence (Bulk Group A) | 1.84 ac | 50 / 30 / 50 ft | — | Occupancy restricted |
| One-Family Residence (Bulk Group E) | 0.92 ac | 50 / 30 / 50 ft | — | No |
| One-Family Residence (Bulk Group I) | 0.52 ac | 40 / 25 / 45 ft | — | No |
| One-Family Residence (Bulk Group M) | 0.34 ac | 30 / 20 / 35 ft | — | No |
| Garden Residence (Bulk Group Q; 10,000 sq ft per dwelling unit) | 0.23 ac | 25 / 10 / 25 ft | — | No |
| Multifamily Residence (Bulk Group U) | 0.92 ac | 50 / 50 / 50 ft | 25 ft | Occupancy restricted |
| Laboratory-Office (Bulk Group X) | 2 ac | 100 / 100 / 100 ft | — | Occupancy restricted |
| Light Industrial-Office (Bulk Group CC) | 2 ac | 100 / 100 / 100 ft | — | Occupancy restricted |
ADUs vs. short-term rentals in Orangetown
Short-term rentals allowed with local rules for Town of Orangetown. Regulated, not banned outright. Orangetown requires short-term rentals to be registered with the Town and restricts them by district — they are not permitted in every residential district. Confirm the current registry requirements and the district-specific restrictions with the Building Department at (845) 359-5100 before listing a property. 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 minimum0.23–1.84 ac — an ADU still has to fit the district's lot and setback envelope.
- Energy codeNew York stretch energy code adopted (2021) — applies to new ADU construction.
- UtilityOrange & Rockland territory.
- Building dept(845) 359-5100
- Last reviewed2026-07-20
ADU FAQ — Orangetown, NY
Are ADUs allowed in Orangetown, NY?
Town of Orangetown has 8 districts. 4 districts prohibit ADUs, 4 allow them with occupancy restrictions. Check your address with the free ADU checker, or confirm with the building department at (845) 359-5100.
Do I need a special permit for an ADU in Orangetown?
No district in Town of Orangetown requires a special-use permit for an ADU - 4 districts prohibit ADUs, 4 allow them with occupancy restrictions. Site-plan review or a building permit may still apply.
Can I use an ADU as a short-term rental in Orangetown?
Short-term rentals allowed with local rules for Town of Orangetown. 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 Orangetown
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 Orangetown, priced by size.
More on Orangetown: Full zoning for new construction · ADU build cost · House build cost · All Rockland County towns
ADU information for Town of Orangetown is compiled from the municipal code (last reviewed 2026-07-20) 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) 359-5100 before relying on any answer. Source: Offsite / Aldo zoning dataset, municipalData.js.