Step 1 of 7 0%
3 minutes · instant results · 100% free

Can You Build an ADU
in Your Backyard?

Answer 7 quick questions about your property. Get an instant feasibility score built on verified state ADU law, an illustrative financial snapshot, and your personalized next steps β€” covering every town across all 6 New England states.

6
NE States Covered
100%
Free to Use
6
Statutes Verified
3 min
Quick Results
✓ No login required ✓ No credit card ✓ Instant results ✓ Verified state law
Step 1 of 7

Where's your property?

ADU rules are 100% local β€” your state + town determine everything from size limits to parking requirements.

Step 2 of 7

About your property

Lot size and utilities determine what's physically possible and shape your permitting path.

Floors above the basement only. Your assessor field card lists this. Do not count the garage, attic, or porches.
This matters most in Massachusetts: the state measures your home in gross floor area, which counts every story with a code-compliant ceiling, including an unfinished basement if it has at least 6 ft 8 in of clear height. Measure slab to the underside of the floor joists. A taller basement can raise your allowed ADU size.
Usually the footprint of the first floor. Leave blank if you have no basement.
Step 3 of 7

What kind of ADU?

Each type has different costs, timelines, and permitting paths. Pick what interests you most.

Step 4 of 7

Goals & budget

This shapes your financial analysis, recommended product tier, and financing path.

Step 5 of 7

Property conditions

These factors can make or break an ADU project. Answer honestly for the most accurate score.

Vermont's state protection requires an owner-occupied lot. New Hampshire towns may require it. Massachusetts and Maine forbid the requirement. Connecticut towns that opted out of state law may impose it.
Step 6 of 7 · Last One

Your analysis is ready. Where should we send it?

Your answers are locked in. Enter your info to unlock your feasibility score on the next screen, and we'll email your full report so you never lose it. Your info stays private β€” see our Privacy Policy.

✓ No spam, ever ✓ Instant score ✓ Free PDF report
Analyzing your property...
Applying verified state ADU law
Checking for municipal data on file
Preparing illustrative ranges
Analyzing property conditions
Generating your feasibility score
Your Results

ADU Feasibility Score

0
OF 100

Free branded report β€” save, print, or share with your builder

Important: state law is the floor, your town writes the rest

The eligibility and size results above come from the state statute as verified on the date shown. Your town's zoning bylaw, dimensional rules, septic capacity, and any overlay districts decide the rest. Verify with your Building Department, then use the resources below to move from estimate to executed project.

Your Score Says You Have Potential.
Here's Your Next Move.

Every stage of an ADU project is covered inside The ADU Exchange. Start with the piece you need first.

Master GC Package
Act as your own General Contractor. Bid templates, sub management tools, and cost controls for your entire build.
Request a Quote
Custom-tailored to your project scope
Subcontractor bid templates
Material takeoff calculator
Project scheduling tools
Inspection prep checklists
Cost tracking spreadsheet
Request a Quote
Need a Real Estate Agent Who Knows ADUs?
Our certified agents understand ADU zoning, valuations, and how to market ADU-ready properties in your area.
Find an ADU-Certified Agent

Your score of -- is a starting point, not a permit. The fastest next move is a 15-minute call to your Building Department with the "Resolve First" list above in hand; that call usually settles more than any online tool can.

Visit Homeowners Central
Free resources Verified partners All 6 NE states
Ready to Get Bids From Verified Builders?
Search our network of licensed, vetted ADU contractors and trade partners across New England β€” free to browse.
Search Trade Partners
Don't want to DIY at all? Our build partner handles everything β€” design through Certificate of Occupancy.
Explore "The Easy Solution" β€” Full Turnkey ADU Build
β€’β€’β€’