Compare ADU zoning rules across 3 Massachusetts cities. Average ADU score: 6.3/10.
| City | Max Size | Setbacks | Permit Fees | Build Cost | 1BR Rent | Score |
|---|---|---|---|---|---|---|
| Boston | 900 sq ft | 20 feet | $4,500-$7,500 | $200,000-$400,000 | $1,800-$2,400/mo | 6/10 |
| Cambridge | 950 sq ft | 15 feet | $3,500-$5,500 | $210,000-$420,000 | $1,900-$2,500/mo | 7/10 |
| Worcester | 850 sq ft | 20 feet | $2,800-$4,500 | $140,000-$280,000 | $1,250-$1,650/mo | 6/10 |
Connect with pre-vetted ADU contractors in your area. Free, no obligation.
🔒 Your info is secure. We connect you with up to 3 vetted local contractors. No spam, no obligation.
Most ADU projects are funded through HELOCs, construction loans, or cash-out refinancing. Compare rates from top lenders in minutes.
Compare ADU Financing Options →