ADU · Westchester County
Can you build an ADU in Greenburgh, NY?
Town of Greenburgh has 27 districts. 19 districts prohibit ADUs, 8 allow them with occupancy restrictions. Check your address to confirm the district that applies to your parcel:
What the Greenburgh 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 |
|---|---|---|---|---|
| One-Family Residence | 0.6887 ac | — | 25 ft | Occupancy restricted |
| One-Family Residence | 0.9183 ac | — | 25 ft | Occupancy restricted |
| Multifamily | 0.1607 ac | — | 25 ft | No |
| Planned Unit Development | 2.5 ac | — | — | Occupancy restricted |
| One-Family Residence | 0.2296 ac | — | 25 ft | Occupancy restricted |
| One-Family Residence | 0.3444 ac | — | 25 ft | Occupancy restricted |
| One-Family Residence | 0.4591 ac | — | 25 ft | Occupancy restricted |
| One-Family Residence | 0.1148 ac | — | 25 ft | Occupancy restricted |
| One-Family Residence | 0.1722 ac | — | 25 ft | Occupancy restricted |
| Multifamily Residence | 0.0918 ac | — | 38 ft | No |
| Multifamily Residence | 0.0689 ac | — | 38 ft | No |
| Scatter-Site Public Housing | 0.1033 ac | — | 25 ft | No |
| Multifamily Residence | 0.0459 ac | — | 38 ft | No |
| High-Rise Multifamily Residence | 0.0402 ac | — | 68 ft | No |
| High-Rise Multifamily Residence | 0.0057 ac | — | 68 ft | No |
| Central Avenue Mixed-Use Impact | — | — | 48 ft | No |
| Close Business | — | — | 25 ft | No |
| Designed Shopping | 0.2296 ac | — | 40 ft | No |
| Hartsdale Center | — | — | 30 ft | No |
| Intermediate Business | — | — | 25 ft | No |
| Limited Office Business | 0.4591 ac | — | 55 ft | No |
| Office Business | 1.8365 ac | — | 75 ft | No |
| Office Business | 1.8365 ac | — | 75 ft | No |
| General Industrial | 1.8365 ac | — | 45 ft | No |
| Light Industrial | 0.9183 ac | — | 45 ft | No |
| Nonresidential Planned Development | 35 ac | — | 40 ft | No |
| Urban Renewal | — | — | — | No |
ADUs vs. short-term rentals in Greenburgh
No local short-term-rental law on record - which is not the same as permission for Town of Greenburgh. Town FAQ states STRs 'are not listed as a permitted use in the Town of Greenburgh in any residential zoning district.' No local STR ordinance or permit pathway exists in the municipal code as of Jun 2026; STRs are effectively prohibited by zoning. 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 minimum0.0057–35 ac — an ADU still has to fit the district's lot and setback envelope.
- UtilityCon Edison territory.
- Building dept(914) 989-1560
- Last reviewed2026-06-15
ADU FAQ — Greenburgh, NY
Are ADUs allowed in Greenburgh, NY?
Town of Greenburgh has 27 districts. 19 districts prohibit ADUs, 8 allow them with occupancy restrictions. Check your address with the free ADU checker, or confirm with the building department at (914) 989-1560.
Do I need a special permit for an ADU in Greenburgh?
No district in Town of Greenburgh requires a special-use permit for an ADU - 19 districts prohibit ADUs, 8 allow them with occupancy restrictions. Site-plan review or a building permit may still apply.
Can I use an ADU as a short-term rental in Greenburgh?
No local short-term-rental law on record - which is not the same as permission for Town of Greenburgh. 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 Greenburgh
Permission is one question and budget is another. An 800 sq ft accessory unit here runs roughly $235k–310k 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 Greenburgh, priced by size.
More on Greenburgh: Full zoning for new construction · ADU build cost · House build cost · All Westchester County towns
ADU information for Town of Greenburgh is compiled from the municipal code (last reviewed 2026-06-15) 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 (914) 989-1560 before relying on any answer. Source: Offsite / Aldo zoning dataset, municipalData.js.