ADUs 300–500 sq ft in Massachusetts
Compact studios and 1-bed layouts that fit tight lots and budgets—perfect for guests, office, or aging-in-place.



Small footprint, big utility
Fits setbacks; simple utility runs.
Efficient layouts
Studio or 1-bed with full bath + kitchenette.
Fastest installs
Shorter site work and finish times.
300-500 sq ft ADUs: About / Details
- Typical sizes: ~320–500 sq ft; studio or 1-bed
- Feasibility first: zoning/bylaws, parking, egress
- Design & engineering: plan, elevations, energy details
- Permits & inspections included
- Construction: foundation/utility tie-ins, insulation, finishes
FAQ
- Bathroom + kitchen possible? Yes—right-sized fixtures and efficient routing.
- Rental allowed? Depends on local bylaws—we’ll confirm.
- Heating/cooling? Mini-split or equivalent efficient system.
300-500 sq ft ADUs: About / Details
- Typical sizes: ~320–500 sq ft; studio or 1-bed
- Feasibility first: zoning/bylaws, parking, egress
- Design & engineering: plan, elevations, energy details
- Permits & inspections included
- Construction: foundation/utility tie-ins, insulation, finishes
FAQ
- Bathroom + kitchen possible? Yes—right-sized fixtures and efficient routing.
- Rental allowed? Depends on local bylaws—we’ll confirm.
- Heating/cooling? Mini-split or equivalent efficient system.

Ready to plan a 300–500 sq ft ADU?
Send your address and goals. We’ll confirm what’s possible and outline next steps.
Let’s plan your ADU
Quick feasibility check. Clear next steps.

