ADU · Rockland County
Can you build an ADU in Haverstraw, NY?
Town of Haverstraw has 12 districts. 6 districts allow ADUs with occupancy restrictions, 4 do not, 2 require a special-use permit. Check your address to confirm the district that applies to your parcel:
What the Haverstraw 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 (Bulk Group A) | 2.75 ac | 50 / 40 / 80 ft | 35 ft | Occupancy restricted |
| Low-Density Residence (Bulk Group B) | 0.92 ac | 50 / 30 / 50 ft | 35 ft | Occupancy restricted |
| Low-Density Residence (Bulk Group D) | 0.57 ac | 35 / 25 / 40 ft | 35 ft | Occupancy restricted |
| Medium-Density Residence (Bulk Group F) | 0.34 ac | 30 / 20 / 35 ft | 35 ft | Occupancy restricted |
| General Residence (Bulk Group H, 1-family detached) | 0.34 ac | 25 / 15 / 25 ft | 35 ft | Occupancy restricted |
| Residential Mobile Home (Bulk Group L, 1-family detached; Group M mobile homes = 5,000 sf) | 0.34 ac | 25 / 15 / 25 ft | 35 ft | Occupancy restricted |
| Commercial Recreation (Bulk Group P; Group O marinas = 5 acres) | 1.38 ac | 60 / 40 / 60 ft | 35 ft | No |
| Professional Office (Bulk Group Q) | 0.46 ac | 50 / 25 / 30 ft | 35 ft | No |
| Commercial (Bulk Group R) | 0.23 ac | 25 / 10 / 25 ft | 35 ft | No |
| Planned Industrial Office (Bulk Group S) | 0.92 ac | 100 / 50 / 50 ft | 35 ft | No |
| Waterfront Redevelopment (Bulk Group T; max density 6 units/acre, height stated as 8 stories) | 25 ac | 150 / 50 / 50 ft | — | Special permit |
| Limited Apartment 17 (Bulk Group U; max density 17 units/acre, minimum FAR 0.6, max total lot coverage 50%) | 10 ac | 35 / 35 / 35 ft | 40 ft | Special permit |
ADUs vs. short-term rentals in Haverstraw
Short-term rentals prohibited for Town of Haverstraw. Prohibited. Transient rental of a dwelling unit is not an enumerated permitted use under Chapter 167 and the Town has no registry or permit pathway. NOTE: the Village of Haverstraw is a separate jurisdiction that REGULATES rather than bans short-term rentals (registration required, capped at 90 days per calendar year) — do not conflate the two. Source: Rockland County Business Journal municipality-by-municipality summary of local STR rules (Jan 2025). Confirm with the Building Department at (845) 429-2200 before listing a property. Separately, since 2025 New York State requires every short-term-rental host to register the unit with the State through the county registry, regardless of what the municipality allows. 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 minimum0.34–25 ac — an ADU still has to fit the district's lot and setback envelope.
- UtilityOrange & Rockland territory.
- Building dept(845) 429-2200
- Last reviewed2026-07-21
ADU FAQ — Haverstraw, NY
Are ADUs allowed in Haverstraw, NY?
Town of Haverstraw has 12 districts. 6 districts allow ADUs with occupancy restrictions, 4 do not, 2 require a special-use permit. Check your address with the free ADU checker, or confirm with the building department at (845) 429-2200.
Do I need a special permit for an ADU in Haverstraw?
It depends on the district: 2 of 12 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 Haverstraw?
Short-term rentals prohibited for Town of Haverstraw. 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 Haverstraw
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 Haverstraw, priced by size.
More on Haverstraw: Full zoning for new construction · ADU build cost · House build cost · All Rockland County towns
ADU information for Town of Haverstraw is compiled from the municipal code (last reviewed 2026-07-21) 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) 429-2200 before relying on any answer. Source: Offsite / Aldo zoning dataset, municipalData.js.