Free ADU Eligibility Report
Find out if you can build an ADU on your property
Enter your address and get an instant eligibility report — including zoning rules, size limits, and setback requirements. Plus, we'll match you with local ADU experts.
Enter your property address
We'll check your ADU eligibility instantly.
Free Eligibility Report
Get a detailed report on your property's ADU eligibility — zoning rules, size limits, setbacks, and parking requirements.
Expert Matching
We connect you with vetted local ADU contractors and designers who know your area's building codes and permit process.
Backed by State Law
Massachusetts law guarantees your right to build an ADU. No special permits, no public hearings — approved by right.
How It Works
Three simple steps to get started with your ADU project.
Check your property
Enter your address to get an instant ADU eligibility report with zoning rules, size limits, and setback requirements.
Get matched with experts
We connect you with vetted local ADU contractors and designers who specialize in your area and project type.
Start your project
Work with your matched expert to design, permit, and build your ADU — with ongoing support from our team.
Why Build an ADU?
ADUs are one of the smartest investments you can make as a homeowner.
$1,500–$3,000/mo
Rental Income
Generate steady monthly income by renting out your ADU as a long-term or short-term rental.
10–30%
Property Value Increase
An ADU can significantly boost your property value — often more than the cost to build it.
By Right
No Special Permits
Massachusetts law guarantees ADU approval by right. No variance, public hearing, or special permit required.
Frequently Asked Questions
Can I build an ADU on my property?
In Massachusetts, every single-family homeowner has the right to build an ADU under the Affordable Homes Act. Our free report checks your specific property for zoning rules, size limits, setbacks, and parking requirements.
How much does an ADU cost to build?
ADU construction costs in Massachusetts typically range from $150,000 to $400,000 depending on size, type (detached, attached, or conversion), and finishes. Garage conversions are usually the most affordable option.
Do I need a special permit for an ADU?
No. Under Massachusetts state law, ADUs are approved by right — no special permit, variance, or public hearing is required. Your local building department issues a standard building permit.
How long does it take to build an ADU?
Most ADU projects take 8–14 months from design to completion. Garage conversions can be faster (4–8 months), while new detached units typically take 10–14 months including permitting.
Ready to check your property?
Get your free ADU eligibility report in under 2 minutes.