ADU · Rockland County
Can you build an ADU in Ramapo, NY?
Town of Ramapo has 17 districts. 15 districts prohibit ADUs, 2 require a special-use permit. Check your address to confirm the district that applies to your parcel:
What the Ramapo 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 Residence (Use Group e) | 3.67 ac | 50 / 30 / 50 ft | 35 ft | No |
| Rural Residence (Use Group e.1) | 1.84 ac | 50 / 30 / 50 ft | 35 ft | No |
| Rural Residence (Use Group h) | 1.15 ac | 50 / 30 / 50 ft | 35 ft | No |
| One-Family Residence (Use Group m) | 0.92 ac | 50 / 25 / 50 ft | 35 ft | No |
| One-Family Residence, Conservation (Use Group m) | 0.92 ac | 50 / 25 / 50 ft | 35 ft | No |
| One-Family Residence (Use Group q) | 0.8 ac | 50 / 25 / 50 ft | 35 ft | No |
| One-Family Residence (Use Group t) | 0.57 ac | 35 / 20 / 35 ft | 35 ft | No |
| One-Family Residence (Use Group x.1) | 0.34 ac | 35 / 15 / 35 ft | 35 ft | No |
| One-Family Residence, Semiattached Permitted (Use Group x.1) | 0.34 ac | 35 / 15 / 35 ft | 35 ft | Special permit |
| One-Family Residence, Cluster (Use Group x.1; height 40 ft per Note 5, FAR 0.90 per Note 1) | 0.34 ac | 35 / 15 / 35 ft | 40 ft | Special permit |
| One-Family Residence / Multifamily Overlay (Use Group x.1) | 0.34 ac | 35 / 15 / 35 ft | 35 ft | No |
| Multifamily Residence (Use Group x.4) | 4 ac | 35 / 35 / 35 ft | 40 ft | No |
| Neighborhood Shopping (Use Group B) | 0.46 ac | 30 / 10 / 25 ft | 30 ft | No |
| Community Shopping (Use Group H) | 0.92 ac | 35 / 20 / 35 ft | 35 ft | No |
| Professional Office (Use Group B) | 0.46 ac | 30 / 10 / 25 ft | 30 ft | No |
| Laboratory-Office (Use Group J) | 1.38 ac | 75 / 75 / 75 ft | 45 ft | No |
| Planned Industrial (Use Group K) | 0.92 ac | 75 / 50 / 50 ft | 45 ft | No |
ADUs vs. short-term rentals in Ramapo
No local short-term-rental law on record - which is not the same as permission for Town of Ramapo. Permitted. Town of Ramapo Code Ch. 376 contains no short-term-rental prohibition or registry; rentals of dwellings are governed by the general rental-property provisions and property-maintenance code rather than a dedicated STR law. Confirm current status with the Building Department at (845) 357-5100 before relying on this. 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 minimum0.34–4 ac — an ADU still has to fit the district's lot and setback envelope.
- UtilityOrange & Rockland territory.
- Building dept(845) 357-5100
- Last reviewed2026-07-20
ADU FAQ — Ramapo, NY
Are ADUs allowed in Ramapo, NY?
Town of Ramapo has 17 districts. 15 districts prohibit ADUs, 2 require a special-use permit. Check your address with the free ADU checker, or confirm with the building department at (845) 357-5100.
Do I need a special permit for an ADU in Ramapo?
It depends on the district: 2 of 17 require a special-use permit, the rest do not. Check the district that applies to your parcel before you design.
Can I use an ADU as a short-term rental in Ramapo?
No local short-term-rental law on record - which is not the same as permission for Town of Ramapo. 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 Ramapo
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 Ramapo, priced by size.
More on Ramapo: Full zoning for new construction · ADU build cost · House build cost · All Rockland County towns
ADU information for Town of Ramapo 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) 357-5100 before relying on any answer. Source: Offsite / Aldo zoning dataset, municipalData.js.