ADU · Westchester County
Can you build an ADU in Buchanan, NY?
Village of Buchanan has 10 districts. 8 districts allow ADUs with occupancy restrictions, 2 do not. Check your address to confirm the district that applies to your parcel:
What the Buchanan 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 |
|---|---|---|---|---|
| Planned Industrial | 1.8365 ac | — | 35 ft | No |
| Residential | 0.4591 ac | — | 35 ft | Occupancy restricted |
| Residential | 0.9183 ac | — | 35 ft | Occupancy restricted |
| Residential | 0.2296 ac | — | 35 ft | Occupancy restricted |
| Residential | 0.3444 ac | — | 35 ft | Occupancy restricted |
| Residential | 0.1722 ac | — | 35 ft | Occupancy restricted |
| Neighborhood Commercial | 0.2296 ac | — | 35 ft | Occupancy restricted |
| Neighborhood / General Commercial Overlay | 0.4591 ac | — | 35 ft | Occupancy restricted |
| General Commercial | 0.4591 ac | — | 35 ft | Occupancy restricted |
| Light Industrial | 0.4591 ac | — | 35 ft | No |
ADUs vs. short-term rentals in Buchanan
No local short-term-rental law on record - which is not the same as permission for Village of Buchanan. No local STR ordinance found as of Jun 2026; standard village zoning and building codes apply. Westchester County hotel occupancy tax (3%) applies to short-term stays. 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 minimum0.1722–0.9183 ac — an ADU still has to fit the district's lot and setback envelope.
- UtilityCon Edison territory.
- Building dept(914) 293-8395
- Last reviewed2026-06-08
ADU FAQ — Buchanan, NY
Are ADUs allowed in Buchanan, NY?
Village of Buchanan has 10 districts. 8 districts allow ADUs with occupancy restrictions, 2 do not. Check your address with the free ADU checker, or confirm with the building department at (914) 293-8395.
Do I need a special permit for an ADU in Buchanan?
No district in Village of Buchanan requires a special-use permit for an ADU - 8 districts allow ADUs with occupancy restrictions, 2 do not. Site-plan review or a building permit may still apply.
Can I use an ADU as a short-term rental in Buchanan?
No local short-term-rental law on record - which is not the same as permission for Village of Buchanan. 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 Buchanan
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 Buchanan, priced by size.
More on Buchanan: Full zoning for new construction · ADU build cost · House build cost · All Westchester County towns
ADU information for Village of Buchanan is compiled from the municipal code (last reviewed 2026-06-08) 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) 293-8395 before relying on any answer. Source: Offsite / Aldo zoning dataset, municipalData.js.