ADU · Orange County
Can you build an ADU in Mount Hope, NY?
Town of Mount Hope has 7 districts. 5 districts prohibit ADUs, 1 allows them, 1 allows them with occupancy restrictions. Check your address to confirm the district that applies to your parcel:
What the Mount Hope 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 |
|---|---|---|---|---|
| Resource Preservation 1 | 2 ac | 40 / 30 / 50 ft | 35 ft | No |
| Resource Preservation 2 | 2 ac | 40 / 30 / 50 ft | 35 ft | No |
| Residential Agricultural | 0.92 ac | 40 / 30 / 50 ft | 35 ft | No |
| Suburban Residential 1 | 0.92 ac | 40 / 30 / 50 ft | 35 ft | No |
| Suburban Residential 2 | 0.92 ac | 40 / 30 / 50 ft | 35 ft | No |
| Local Business | 0.92 ac | 50 / 20 / 50 ft | 35 ft | As of right |
| Office, Research, and Industrial Park | 0.92 ac | 75 / 30 / 50 ft | 60 ft | Occupancy restricted |
ADUs vs. short-term rentals in Mount Hope
No local short-term-rental law on record - which is not the same as permission for Town of Mount Hope. No local short-term-rental law found as of 2026-08-26. The Town does operate a lodging permit regime that may reach a short stay: Zoning Chapter 250, Article X covers multifamily dwellings, group dwellings and tourist home accommodations, and § 250-47 requires a Building Inspector permit for boardinghouses, rooming houses, lodging houses, mobile home courts, TOURIST ACCOMMODATIONS and bed-and-breakfasts, with application and fee terms at §§ 250-48 and 250-49 and a registry at § 250-50. Whether a whole-house short-term rental is a 'tourist accommodation' under Article X has not been settled, and it is the question to put to the Building Inspector before listing. Chapter 250 was amended by L.L. No. 4-2025 (7-7-2025) and L.L. No. 1-2026 (5-4-2026). Absence of a found STR law is not permission. New York State's 2025 short-term rental registry (Ch. 99 of the Laws of 2025) separately requires every host statewide to register the unit regardless of local law. Confirm with Town of Mount Hope at (845) 386-9949 before listing. 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 minimum0.92 ac — an ADU still has to fit the district's lot and setback envelope.
- UtilityOrange & Rockland territory.
- Building dept(845) 386-9949
- Last reviewed2026-07-08
ADU FAQ — Mount Hope, NY
Are ADUs allowed in Mount Hope, NY?
Town of Mount Hope has 7 districts. 5 districts prohibit ADUs, 1 allows them, 1 allows them with occupancy restrictions. Check your address with the free ADU checker, or confirm with the building department at (845) 386-9949.
Do I need a special permit for an ADU in Mount Hope?
No district in Town of Mount Hope requires a special-use permit for an ADU - 5 districts prohibit ADUs, 1 allows them, 1 allows 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 Mount Hope?
No local short-term-rental law on record - which is not the same as permission for Town of Mount Hope. 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 Mount Hope
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 Mount Hope, priced by size.
More on Mount Hope: Full zoning for new construction · ADU build cost · House build cost · All Orange County towns
ADU information for Town of Mount Hope is compiled from the municipal code (last reviewed 2026-07-08) 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 (845) 386-9949 before relying on any answer. Source: Offsite / Aldo zoning dataset, municipalData.js.