Aldo

Westchester County

Town of New Castle, NY: zoning for new construction

17 districts Min lot 0.1148–20 ac Con Edison

Thinking about building in the Town of New Castle? Here is what the zoning actually says, pulled straight from the town code. Town of New Castle runs 17 zoning districts, with residential minimum lot sizes ranging from 0.1148 to 20 acres depending on the district. Short-term rentals - see local ordinance here. Use the district figures below to size up a parcel before you buy, then confirm the specifics with the building department.

Zoning districts

District Min lot Setbacks F / S / R Max height ADU
Multifamily Planned Development 5 ac — 35 ft As of right
One-Family Residence 2 ac — 35 ft As of right
One-Family Residence 2 ac — 35 ft As of right
Multifamily Residence - Chappaqua 1 ac — 35 ft As of right
Multifamily Residence - Millwoood 1 ac — 35 ft As of right
One-Family Residence 0.5 ac — 35 ft As of right
One-Family Residence 0.5 ac — 35 ft As of right
One-Family Residence 1 ac — 35 ft As of right
One-Family Residence 1 ac — 35 ft As of right
One-Family Residence 1 ac — 35 ft As of right
One-Family Residence 0.2583 ac — 35 ft As of right
Research and Office Business 20 ac — 40 ft No
Designed Business 0.1148 ac — 30 ft No
Retail Business 0.1148 ac — 35 ft No
Retail Business and Parking 0.1148 ac — 30 ft No
General Industrial 15 ac — 30 ft No
Planned Industrial 0.1722 ac — 30 ft No

Short-term rentals

Short-term rentals - see local ordinance. No local STR ordinance found as of Jun 2026; standard town zoning and building codes apply. Westchester County hotel occupancy tax (3%) applies to short-term stays.

Good to know

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Other Westchester County towns

City of Harrison
19 districts
City of Mount Vernon
19 districts
City of New Rochelle
38 districts
City of Peekskill
25 districts
City of Rye
24 districts
City of White Plains
33 districts

Zoning figures for Town of New Castle are compiled from the municipal code (last reviewed 2026-06-08) and provided for decision-support only - not legal, engineering, or architectural advice. Setback and dimensional standards often carry conditions and exceptions; verify with the building department at (914) 238-4723 before relying on any number. Source: Offsite / Aldo zoning dataset, municipalData.js.