Homeowners in Milford can explore ADU options, as the municipality allows these units to serve various purposes on single-family residential lots. Whether you're considering flexible living arrangements for relatives, a revenue stream from long-term tenants, or additional square footage for your growing family, understanding the local zoning rules is essential to moving forward with confidence. We've reviewed Milford's zoning regulations in detail and outlined the key requirements below. Rules can change, so confirm details with the Milford Planning Department or book a free consultation with our team before starting your project.
Where Are ADUs Allowed
ADUs in Milford 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 Milford's local zoning requirements. Contact the Milford 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 Milford
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 Milford'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 Milford typically takes 4 to 8 weeks on average in Connecticut.
Frequently Asked Questions
Q: What size limit and attachment requirement apply to ADUs in Milford?
Milford limits ADUs to 800 square feet and requires the unit to be attached to the main structure, prohibiting detached standalone structures.
Q: Can I rent my ADU short-term in Milford?
The Planning and Zoning Board did not prohibit short-term rentals of ADUs, so rentals can be as short as a few days. However, it is recommended to verify current regulations before proceeding with short-term rental plans.
Q: Can I rent my ADU to someone who is not a relative?
Yes, Milford allows owners to gain income from the ADU by renting it to someone who is not a relative, approved by the Planning and Zoning Board in January 2023.
Your property must be a single-family residential lot with appropriate zoning designation to be eligible for an ADU in Milford. At Haven, we handle the entire ADU process for Milford homeowners, from zoning verification and design through permitting and construction. Book a free consultation to find out if your property qualifies.