Truro ADU Regulations
Current zoning bylaws, requirements, and permit process for Accessory Dwelling Units in Truro, Massachusetts. Last updated: October 2025.
Please Note: This information is provided for general informational purposes only and should not be considered legal or professional advice. ADU regulations are subject to change, and individual circumstances may vary. We strongly recommend verifying all requirements, zoning bylaws, and permit procedures directly with the Town of Truro Building Department or Planning Board before beginning any planning or construction activities. Town officials can provide the most current regulations and guidance specific to your property and project.
Bullet Point Summary
- Maximum Size: 900 sq ft or 50% of primary dwelling (state minimum)
- Owner Occupancy Required: No (prohibited by state law)
- Number of ADUs Permitted: One by-right; second requires special permit
- Attached vs. Detached: Both allowed
- Parking Requirements: Max 1 space (state limit)
- Design Requirements: Must meet local dimensional standards equal to or more permissive than single-family homes
- Septic/Title 5 Requirements: Standard Title 5 compliance
- Rental Restrictions: Towns may restrict short-term rentals
- Special Incentives: None identified
- Application Process: Building permit for first ADU; contact Building Department
Additional Information
For the most up-to-date and complete regulations, please contact the Truro Building Department at 508-487-1101 or visit the town's official website at truro-ma.gov.
Our ADU specialists can help you navigate Truro's specific requirements and design an ADU that meets all local regulations while maximizing your property's potential.