ADU · Westchester County
Can you build an ADU in Yorktown, NY?
Town of Yorktown has 25 districts. 14 districts allow ADUs with occupancy restrictions, 10 do not. 1 district has incomplete data - verify with the building department at (914) 962-5722. Check your address to confirm the district that applies to your parcel:
What the Yorktown 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 Residential | 3.6731 ac | — | 35 ft | Occupancy restricted |
| One-Family Residential | 4.5914 ac | — | 35 ft | Occupancy restricted |
| One-Family Residential | 1.8365 ac | — | 35 ft | Occupancy restricted |
| One-Family Residential | 0.9183 ac | — | 35 ft | Occupancy restricted |
| Two-Family Residential | 0.2296 ac | — | 35 ft | Occupancy restricted |
| One-Family Residential | 0.2296 ac | — | 35 ft | Occupancy restricted |
| One-Family Residential | 0.4591 ac | — | 35 ft | Occupancy restricted |
| Multi-Family Residential | 0.0833 ac | — | 40 ft | No |
| Age-Oriented Community | 15 ac | — | 35 ft | Occupancy restricted |
| Continuous Care | — | — | — | Occupancy restricted |
| Senior Citizens Development | 0.0505 ac | — | 35 ft | No |
| Research Laboratory and Office | — | — | 45 ft | No |
| Planned Retail Business | — | — | 30 ft | Occupancy restricted |
| Local Retail Business | — | — | 35 ft | Occupancy restricted |
| Commercial Hamlet Center | — | — | 35 ft | Occupancy restricted |
| Highway Commercial | — | — | 35 ft | No |
| General Commercial | — | — | 35 ft | No |
| Country Commercial Business District | — | — | — | No |
| Commercial Recreation | 0.2296 ac | — | 35 ft | No |
| Commercial Regional Center | 1.8365 ac | — | 45 ft | Occupancy restricted |
| Office District | — | — | 45 ft | Occupancy restricted |
| Transitional Zone | — | — | — | — |
| Light Industrial Park District | 10 ac | — | — | No |
| Light Industrial District | 10 ac | — | — | No |
| Planned Interchange District | 10 ac | — | 35 ft | No |
ADUs vs. short-term rentals in Yorktown
No local short-term-rental law on record - which is not the same as permission for Town of Yorktown. No local short-term-rental law found as of 2026-08-26. The Zoning Code does regulate a related use: § 300-60 permits a tourist home, rooming house or boardinghouse ONLY when conducted in the dwelling by the resident owner or lessee, with kitchen and dining facilities closed to the general public and no change to the building's exterior. That is an owner-present lodging use and does not reach an unhosted whole-house short-term rental, which the code neither names nor authorises. Absence of a found STR law is not permission. New York State's 2025 short-term rental registry (Ch. 99 of the Laws of 2025) separately requires every host statewide to register the unit regardless of local law. Confirm with Town of Yorktown at (914) 962-5722 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 minimum0.0833–4.5914 ac — an ADU still has to fit the district's lot and setback envelope.
- UtilityCon Edison territory.
- Building dept(914) 962-5722
- Last reviewed2026-06-08
ADU FAQ — Yorktown, NY
Are ADUs allowed in Yorktown, NY?
Town of Yorktown has 25 districts. 14 districts allow ADUs with occupancy restrictions, 10 do not. 1 district has incomplete data - verify with the building department at (914) 962-5722. Check your address with the free ADU checker.
Do I need a special permit for an ADU in Yorktown?
No district in Town of Yorktown requires a special-use permit for an ADU - 14 districts allow ADUs with occupancy restrictions, 10 do not. Site-plan review or a building permit may still apply.
Can I use an ADU as a short-term rental in Yorktown?
No local short-term-rental law on record - which is not the same as permission for Town of Yorktown. 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 Yorktown
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 Yorktown, priced by size.
More on Yorktown: Full zoning for new construction · ADU build cost · House build cost · All Westchester County towns
ADU information for Town of Yorktown 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) 962-5722 before relying on any answer. Source: Offsite / Aldo zoning dataset, municipalData.js.