Tarrytown's zoning regulations are relatively welcoming to ADUs, creating solid opportunities for homeowners seeking to maximize their property value. Whether you're considering a rental unit to supplement household income, additional space for aging parents or adult children, or a detached home office and guest suite, understanding the local zoning rules is essential to moving forward with confidence. We've reviewed Tarrytown's zoning regulations in detail and outlined the key requirements below. Rules can change, so confirm details with the Tarrytown Planning Department or book a free consultation with our team before starting your project.
Where Are ADUs Allowed
ADUs in Tarrytown 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. Key neighborhoods where ADUs are often approved include downtown, waterfront.
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 Tarrytown's local zoning requirements. Contact the Tarrytown 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 Tarrytown
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 Tarrytown'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 Tarrytown typically takes 4 to 8 weeks on average in New York.
Frequently Asked Questions
Q: What is the minimum lot size for an ADU in Tarrytown?
Tarrytown requires a minimum of 15,000 square feet of property in single-family residential zones to build an ADU. This requirement applies across all residential zones.
Q: How large can an ADU be in Tarrytown?
ADUs in Tarrytown must be between 300 and 1,000 square feet. Only one ADU is permitted per lot, and it must be owner-occupied.
Q: Can I build a detached ADU in smaller Tarrytown residential zones?
Detached ADUs can only be built in larger residential zones (R-80, R-60, R-40, R-30, R-20, and R-15). In smaller zones, ADUs must be within an existing or addition to the main building.
Your property must be a single-family residential lot with appropriate zoning designation to be eligible for an ADU in Tarrytown. At Haven, we handle the entire ADU process for Tarrytown homeowners, from zoning verification and design through permitting and construction. Book a free consultation to find out if your property qualifies.