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

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