ADU · Rockland County
Can you build an ADU in Nyack, NY?
Village of Nyack has 14 districts. All districts prohibit ADUs. Check your address to confirm the district that applies to your parcel:
What the Nyack 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 |
|---|---|---|---|---|
| Single-Family Residential-1 (min lot width 50 ft; min usable open space 1,500 sf/du; min dwelling unit 900 sf. Front setback is 20% of lot area divided by lot width and rear setback is 30% of lot area divided by lot width — formulas, not fixed figures, so both are null here; combined side yards must total 30% of lot width. Side setback is the code floor of 5 ft (the requirement is 5 ft or 10% of lot width, whichever is larger).) | 0.17 ac | - / 5 / - ft | 32 ft | No |
| Single-Family Residential-2 (min lot width 50 ft; min usable open space 1,000 sf/du; min dwelling unit 900 sf. Front setback is 20% of lot area divided by lot width and rear setback is 30% of lot area divided by lot width — formulas, not fixed figures, so both are null here; combined side yards must total 30% of lot width. Side setback is the code floor of 5 ft (the requirement is 5 ft or 10% of lot width, whichever is larger).) | 0.11 ac | - / 5 / - ft | 32 ft | No |
| Two-Family Residential (one-family row shown: 5,000 sf. Two-family, not-for-profit ambulance facilities and their accessory apartments require 10,000 sf, 75 ft width and 100 ft depth. Min lot width 50 ft; min dwelling unit 900 sf. Front setback is 20% of lot area divided by lot width and rear setback is 30% of lot area divided by lot width — formulas, not fixed figures, so both are null here; combined side yards must total 30% of lot width. Side setback is the code floor of 5 ft (the requirement is 5 ft or 10% of lot width, whichever is larger).) | 0.11 ac | - / 5 / - ft | 32 ft | No |
| Multifamily Residential-1 (min lot width and depth 100 ft; max density 14 du/acre; max building length 160 ft; combined side yards 50 ft; min dwelling unit 600 sf) | 0.46 ac | 30 / 25 / 30 ft | 40 ft | No |
| Multifamily Residential-2 (min lot width and depth 100 ft; max density 30 du/acre; max building length 160 ft; combined side yards 20 ft. Front, side and rear setbacks are the stated figure or 1/2 the building height, whichever is greater) | 0.46 ac | 30 / 20 / 25 ft | 50 ft | No |
| Multifamily Residential-3 (min lot width 100 ft; max density 50 du/acre; max building length 160 ft; combined side yards 40 ft; min dwelling unit 600 sf) | 0.92 ac | 20 / 20 / 20 ft | 85 ft | No |
| Downtown Mixed Use-1 (no minimum lot area, width or depth; max FAR 2.0; max density 50 du/acre; 3 stories. No front setback required; side yards not required but 5 ft minimum if provided; no rear yard for the first story or 17 ft, whichever is less, otherwise 15 ft. Side and rear yards adjacent to a residential zone require 15 ft plus a landscaped buffer) | — | 0 / 0 / 15 ft | 40 ft | No |
| Downtown Mixed Use-2 (no minimum lot area; min street frontage 50 ft; max FAR 2.0; max density 50 du/acre; 3 stories. Buildings must sit at least 15 ft from the curbline and step back an additional 5 ft above a height of 32 ft. Side yards not required but 5 ft minimum if provided; rear yard 15 ft above the first story; 15 ft plus landscaped buffer where adjacent to a residential zone) | — | 15 / 0 / 15 ft | 40 ft | No |
| Residential Mixed Use (min lot width and street frontage 25 ft; max FAR 0.75, raised to 1.0 by Planning Board special permit for mixed use on lots of 15,000 sf or more; max density 18 du/acre; 2 stories; no front setback required; combined side yards 20 ft) | 0.17 ac | 0 / 10 / 15 ft | 32 ft | No |
| Office Mixed Use (min lot width and street frontage 50 ft; max FAR 0.5; 2 stories; no front setback required; combined side yards 20 ft; min dwelling unit 600 sf) | 0.17 ac | 0 / 10 / 25 ft | 35 ft | No |
| Corridor Commercial (min lot width 60 ft; max FAR 0.5, dropping to 0.6 FAR with 45% maximum building coverage on lots of 40,000 sf or more; 2 stories; front setback minimum 15 ft with a MAXIMUM of 25 ft; side yards not required but 5 ft minimum if provided; 15 ft plus landscaped buffer where adjacent to a residential zone) | 0.17 ac | 15 / 0 / 25 ft | 35 ft | No |
| Waterfront (no minimum lot area; min lot width and street frontage 25 ft; max FAR 0.65. For properties with water frontage the yard requirements are measured from the mean high-water line; no rear yard required) | — | 10 / 10 / 0 ft | 35 ft | No |
| Manufacturing (no minimum lot area; min lot width and street frontage 50 ft; max FAR 1.0; max density 24 du/acre; 2 stories. Adaptive reuse projects follow the separate bulk regulations of § 360-3.2A(1A)) | — | 20 / 20 / 20 ft | 35 ft | No |
| Hospital (min lot width and depth 200 ft; max FAR 1.2; 3 1/2 stories; max building coverage 31% applies to accessory buildings only. Setbacks from the street line are 15 ft, increasing to 25 ft where the structure faces a street with one- or two-family residences opposite. Height may increase 2 ft for each additional foot of setback from surrounding streets, capped at 6 stories or 72 ft) | 0.92 ac | 15 / 15 / 15 ft | 40 ft | No |
ADUs vs. short-term rentals in Nyack
Short-term-rental status not confirmed for Village of Nyack. Short-term rental status not confirmed for the Village of Nyack — the Village code has no short-term-rental chapter, and Table 3-1 lists no transient-rental use (bed-and-breakfast is a special permit use in every district). Under a permissive-list use table an unlisted use is not an allowed use, but that is an inference, not a confirmed local law: absence of a found law is NOT permission. Call the Building Department at (845) 358-0548 to confirm 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 minimum0.11–0.92 ac — an ADU still has to fit the district's lot and setback envelope.
- UtilityOrange & Rockland territory.
- Building dept(845) 358-0548
- Last reviewed2026-07-22
ADU FAQ — Nyack, NY
Are ADUs allowed in Nyack, NY?
Village of Nyack has 14 districts. All districts prohibit ADUs. Check your address with the free ADU checker, or confirm with the building department at (845) 358-0548.
Do I need a special permit for an ADU in Nyack?
No. No district in Village of Nyack permits an ADU, so there is no permit to apply for. Codes change, so verify with the building department at (845) 358-0548 before ruling it out.
Can I use an ADU as a short-term rental in Nyack?
Short-term-rental status not confirmed for Village of Nyack. 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 Nyack
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 Nyack, priced by size.
More on Nyack: Full zoning for new construction · ADU build cost · House build cost · All Rockland County towns
ADU information for Village of Nyack is compiled from the municipal code (last reviewed 2026-07-22) 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) 358-0548 before relying on any answer. Source: Offsite / Aldo zoning dataset, municipalData.js.