Dobbs Ferry permits ADUs under specific conditions, opening up possibilities for homeowners looking to generate rental income or house family members. Whether you're considering an income-generating rental property, a dedicated space for extended family living, or a private guest house and workspace, understanding the local zoning rules is essential to moving forward with confidence. We've reviewed Dobbs Ferry's zoning regulations in detail and outlined the key requirements below. Rules can change, so confirm details with the Dobbs Ferry Planning Department or book a free consultation with our team before starting your project.
Where Are ADUs Allowed
ADUs in Dobbs Ferry are permitted on single-family residential properties. ADUs are permitted on single-family residential properties that meet current zoning district requirements.Each property is limited to one ADU.
Types of ADUs Allowed
Attached (an addition to your existing home that shares a wall, maintaining architectural cohesion with the main structure). Detached (a standalone structure in your backyard, ideal for rental income, multigenerational living, or maximum privacy). Converted (repurposing an existing garage, basement, or accessory structure, often the most expedient option since the shell already exists).
Size Limits
ADU size must comply with Dobbs Ferry's local zoning requirements. Contact the Dobbs Ferry Planning Department for specific square footage limits.
Parking
Off-street parking requirements apply to ADUs.
Owner Occupancy
Owner occupancy is required. The property owner must continuously occupy either the main home or the ADU as their primary residence.
Rental Use
Long-term rentals are generally permitted. Short-term rental restrictions may apply, so check local regulations if you're considering Airbnb or VRBO-style leasing.
How to Build an ADU in Dobbs Ferry
Schedule a free consultation with Haven to confirm your eligibility and walk through your options
Work with a Haven designer to develop your custom ADU project that meets Dobbs Ferry's local regulations
Haven handles all communication with the municipality and submits your permit application
During construction, the Haven team visits the site regularly to ensure what is being built meets our standards
Certificate of occupancy is issued after the final inspection, allowing the unit to be legally occupied
Permit approval in Dobbs Ferry typically takes 4 to 8 weeks on average in New York.
Frequently Asked Questions
Q: How many ADUs can I build in Dobbs Ferry?
Dobbs Ferry allows one ADU per lot, with a village-wide cap of 50 special permits issued for ADUs. Each ADU can have no more than two bedrooms and must be 300 to 800 square feet.
Q: Does the owner have to live in Dobbs Ferry if I build an ADU?
Yes, the property owner must occupy either the principal building or the ADU as their primary residence. Both must be owner-occupied.
Q: Can I build an ADU in a multi-family zone in Dobbs Ferry?
As of February 2025, Dobbs Ferry expanded its ADU law to allow ADUs in multi-family residential zones, but only in accessory buildings on properties with one-family dwellings.
Your property must be a single-family residential lot with appropriate zoning designation to be eligible for an ADU in Dobbs Ferry. At Haven, we handle the entire ADU process for Dobbs Ferry homeowners, from zoning verification and design through permitting and construction. Book a free consultation to find out if your property qualifies.