ADU · Rockland County
Can you build an ADU in Spring Valley, NY?
Village of Spring Valley has 14 districts. All districts prohibit ADUs. Check your address to confirm the district that applies to your parcel:
What the Spring Valley 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 |
|---|---|---|---|---|
| Low-Density Residential (one-family detached dwellings; 9,000 sf and 90 ft of width on a corner lot; combined side yards 30 ft; max FAR 0.65; three stories) | 0.2 ac | 25 / 15 / 20 ft | 35 ft | No |
| Low-Medium Residential (one-family detached dwellings; 9,000 sf and 90 ft of width on a corner lot; combined side yards 30 ft; max FAR 0.65; three stories) | 0.2 ac | 25 / 15 / 20 ft | 35 ft | No |
| Medium-Density Residential (one-family detached dwellings; 9,000 sf and 90 ft of width on a corner lot; combined side yards 30 ft; max FAR 0.65; three stories) | 0.2 ac | 25 / 15 / 20 ft | 35 ft | No |
| Medium-High-Density Residential (one-family detached dwellings; 9,000 sf and 90 ft of width on a corner lot; combined side yards 30 ft; max FAR 0.65; three stories) | 0.2 ac | 25 / 15 / 20 ft | 35 ft | No |
| High-Density Residential (one-family detached dwellings; 9,000 sf and 90 ft of width on a corner lot; combined side yards 30 ft; max FAR 0.65; three stories) | 0.2 ac | 25 / 15 / 20 ft | 35 ft | No |
| Low-Rise High-Density Residential (one-family detached dwellings; 9,000 sf and 90 ft of width on a corner lot; combined side yards 30 ft; max FAR 0.65; three stories) | 0.2 ac | 25 / 15 / 20 ft | 35 ft | No |
| Specialized Housing Residential (one-family detached dwellings; 9,000 sf and 90 ft of width on a corner lot; combined side yards 30 ft; max FAR 0.65; three stories) | 0.2 ac | 25 / 15 / 20 ft | 35 ft | No |
| Planned Residential Development Overlay (one-family detached dwellings; 9,000 sf and 90 ft of width on a corner lot; combined side yards 30 ft; max FAR 0.65; three stories) | 0.2 ac | 25 / 15 / 20 ft | 35 ft | No |
| Professional Office-Residential (one-family detached dwellings; 9,000 sf and 90 ft of width on a corner lot; combined side yards 30 ft; max FAR 0.65; three stories) | 0.2 ac | 25 / 15 / 20 ft | 35 ft | No |
| Professional Office (institutional and utility use group; min lot width 100 ft; max FAR 0.30; three stories) | 0.57 ac | 35 / 20 / 40 ft | 35 ft | No |
| Neighborhood Business (institutional and utility use group; min lot width 100 ft; max FAR 0.30; three stories) | 0.57 ac | 35 / 10 / 40 ft | 35 ft | No |
| General Business (institutional and utility use group; min lot width 100 ft; max FAR 0.30; three stories) | 0.57 ac | 35 / 20 / 40 ft | 35 ft | No |
| Highway Business (institutional and utility use group; min lot width 100 ft; max FAR 0.30; three stories) | 0.57 ac | 35 / 10 / 40 ft | 35 ft | No |
| Planned Light Industrial (institutional and utility use group; min lot width 100 ft; max FAR 0.30; three stories) | 0.57 ac | 35 / 10 / 40 ft | 35 ft | No |
ADUs vs. short-term rentals in Spring Valley
Short-term-rental status not confirmed for Village of Spring Valley. Short-term rental status not confirmed for the Village of Spring Valley — the Village code has no short-term-rental chapter and Chapter 255 lists no transient-rental use. Absence of a found law is NOT permission: call the Building Department at (845) 352-1100 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 minimum0.2 ac — an ADU still has to fit the district's lot and setback envelope.
- UtilityOrange & Rockland territory.
- Building dept(845) 352-1100
- Last reviewed2026-07-22
ADU FAQ — Spring Valley, NY
Are ADUs allowed in Spring Valley, NY?
Village of Spring Valley has 14 districts. All districts prohibit ADUs. Check your address with the free ADU checker, or confirm with the building department at (845) 352-1100.
Do I need a special permit for an ADU in Spring Valley?
No. No district in Village of Spring Valley permits an ADU, so there is no permit to apply for. Codes change, so verify with the building department at (845) 352-1100 before ruling it out.
Can I use an ADU as a short-term rental in Spring Valley?
Short-term-rental status not confirmed for Village of Spring Valley. 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 Spring Valley
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 Spring Valley, priced by size.
More on Spring Valley: Full zoning for new construction · ADU build cost · House build cost · All Rockland County towns
ADU information for Village of Spring Valley 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) 352-1100 before relying on any answer. Source: Offsite / Aldo zoning dataset, municipalData.js.