ADU · Rensselaer County
Can you build an ADU in North Greenbush, NY?
Town of North Greenbush has 13 districts. 7 districts prohibit ADUs, 3 allow them with occupancy restrictions, 2 require a special-use permit. 1 district has incomplete data - verify with the building department at (518) 283-5313. Check your address to confirm the district that applies to your parcel:
What the North Greenbush 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 |
|---|---|---|---|---|
| Agriculture Residential District | 2 ac | 50 / 50 / 50 ft | 35 ft | Special permit |
| Residential District 1 | 0.918 ac | 50 / 50 / 50 ft | 35 ft | Special permit |
| Residential District 2 | 0.918 ac | 50 / 50 / 50 ft | 35 ft | Occupancy restricted |
| Residential District 3 | 0.918 ac | 50 / 50 / 50 ft | 35 ft | Occupancy restricted |
| Residential District 4 | 0.918 ac | 50 / 50 / 50 ft | 35 ft | Occupancy restricted |
| Hamlet | 0.459 ac | 25 / 20 / 35 ft | 40 ft | No |
| Neighborhood Business District | 0.459 ac | 30 / 20 / 35 ft | 40 ft | No |
| Professional Business District | 0.459 ac | 30 / 20 / 35 ft | 40 ft | No |
| Commercial District | 5 ac | 50 / 50 / 50 ft | 45 ft | No |
| General Business District | 0.459 ac | 30 / 20 / 30 ft | 45 ft | No |
| Industrial District | 0.918 ac | 35 / 40 / 50 ft | 45 ft | No |
| Technology Park District | 0.918 ac | 35 / 40 / 50 ft | 60 ft | No |
| Natural Products Extraction District | 2 ac | 50 / 50 / 50 ft | 40 ft | — |
ADUs vs. short-term rentals in North Greenbush
No local short-term-rental law on record - which is not the same as permission for Town of North Greenbush. No local short-term-rental law found for Town of North Greenbush as of 2026-08-05; absence of a found law is not permission. Separately, New York State's 2025 STR registry (Ch. 99 of the Laws of 2025) requires every host statewide to register the unit through the Rensselaer County registry regardless of what the municipality allows. Confirm with the building department at (518) 283-5313 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 minimum0.459–2 ac — an ADU still has to fit the district's lot and setback envelope.
- UtilityNational Grid territory.
- Building dept(518) 283-5313
- Last reviewed2026-08-05
ADU FAQ — North Greenbush, NY
Are ADUs allowed in North Greenbush, NY?
Town of North Greenbush has 13 districts. 7 districts prohibit ADUs, 3 allow them with occupancy restrictions, 2 require a special-use permit. 1 district has incomplete data - verify with the building department at (518) 283-5313. Check your address with the free ADU checker.
Do I need a special permit for an ADU in North Greenbush?
It depends on the district: 2 of 13 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 North Greenbush?
No local short-term-rental law on record - which is not the same as permission for Town of North Greenbush. 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 North Greenbush
Permission is one question and budget is another. An 800 sq ft accessory unit here runs roughly $195k–255k 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 North Greenbush, priced by size.
More on North Greenbush: Full zoning for new construction · ADU build cost · House build cost · All Rensselaer County towns
ADU information for Town of North Greenbush is compiled from the municipal code (last reviewed 2026-08-05) 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 (518) 283-5313 before relying on any answer. Source: Offsite / Aldo zoning dataset, municipalData.js.