Mount Vernon Zoning & Land Use Guide
Last updated: Verified:
Key Zoning Facts
Regulatory Layers That Apply in Mount Vernon
Your property is subject to ALL of these regulatory layers. Each one can impose additional requirements beyond the others.
Federal
- FEMA Flood Zones: Applicable
- View FEMA Flood Map
State — New York
- Building Code: NY State Uniform Fire Prevention and Building Code (2020 IBC)
- State ADU Override: Yes (NY ADU legislation signed 2024)
County — Westchester County
- Role: Property records, tax assessment, county planning review under GML Section 239
City / Municipal
The city's zoning ordinance, building codes, and local permits form the primary layer of land-use regulation for your property.
Overlay Districts
No overlay districts identified.
Private Restrictions
- HOA / CC&Rs common: Yes
- Check HOA CC&Rs for additional restrictions.
Primary Zoning Districts
| District Code | Name | Min Lot | Max Height | Front Setback | Side Setback | Rear Setback | FAR |
|---|---|---|---|---|---|---|---|
| RS | Single-Family Residential | 5,000 sq ft | 35 ft | 20 ft | 5 ft | 25 ft | — |
| RM | Multi-Family Residential | 2,000 sq ft per unit | 50 ft | 15 ft | 8 ft | 20 ft | — |
| CB | Central Business | None | 60 ft | 0 ft | 0 ft | 15 ft | — |
ADU Rules in Mount Vernon
ADUs:Allowed
- Max Size
- 750 sq ft
- Max Height
- 18 ft
- Rear Setback
- 5 ft
- Side Setback
- 5 ft
- Parking
- 1 additional space
- Owner Occupancy
- Required
- Permit Timeline
- 8-12 weeks
Official Sources
Frequently Asked Questions
Frequently Asked Questions
Can I build an ADU in Mount Vernon?
Yes. Mount Vernon allows ADUs in residential zones subject to size, setback, and owner-occupancy requirements.
How do I find the zoning for my property in Mount Vernon?
Contact the Department of Planning at (914) 665-2300 or visit city hall.
What zones allow multi-family housing in Mount Vernon?
Multi-family housing is permitted in RM zones and the Central Business district.
Disclaimer: The information on this website is provided for general informational purposes only and does not constitute legal, financial, or professional advice. Zoning codes and building regulations change frequently. Always verify current requirements with your local planning department and building authority before making any decisions.