ADU · Orange County
Can you build an ADU in Harriman, NY?
Village of Harriman has 6 districts. 5 districts allow ADUs with occupancy restrictions, 1 does not. Check your address to confirm the district that applies to your parcel:
What the Harriman 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 |
|---|---|---|---|---|
| Residential | 0.344 ac | 40 / 20 / 40 ft | 35 ft | Occupancy restricted |
| Residential | 0.115 ac | 25 / 8 / 35 ft | 35 ft | Occupancy restricted |
| Multifamily Residential | 0.115 ac | 25 / 8 / 35 ft | 35 ft | Occupancy restricted |
| Central Business | 0.115 ac | 20 / 0 / 0 ft | 35 ft | Occupancy restricted |
| General Business | 0.344 ac | 50 / 15 / 35 ft | 35 ft | Occupancy restricted |
| Industrial | 0.918 ac | 40 / 20 / 20 ft | 50 ft | No |
ADUs vs. short-term rentals in Harriman
No local short-term-rental law on record - which is not the same as permission for Village of Harriman. No short-term-rental-specific chapter found in the Village code as of Jul 2026. 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 minimum0.115–0.344 ac — an ADU still has to fit the district's lot and setback envelope.
- UtilityOrange & Rockland territory.
- Building dept(845) 782-6892
- Last reviewed2026-07-12
ADU FAQ — Harriman, NY
Are ADUs allowed in Harriman, NY?
Village of Harriman has 6 districts. 5 districts allow ADUs with occupancy restrictions, 1 does not. Check your address with the free ADU checker, or confirm with the building department at (845) 782-6892.
Do I need a special permit for an ADU in Harriman?
No district in Village of Harriman requires a special-use permit for an ADU - 5 districts allow ADUs with occupancy restrictions, 1 does not. Site-plan review or a building permit may still apply.
Can I use an ADU as a short-term rental in Harriman?
No local short-term-rental law on record - which is not the same as permission for Village of Harriman. 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 Harriman
Permission is one question and budget is another. An 800 sq ft accessory unit here runs roughly $205k–270k 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 Harriman, priced by size.
More on Harriman: Full zoning for new construction · ADU build cost · House build cost · All Orange County towns
ADU information for Village of Harriman is compiled from the municipal code (last reviewed 2026-07-12) 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) 782-6892 before relying on any answer. Source: Offsite / Aldo zoning dataset, municipalData.js.