Prefab ADU Cost: Your Massachusetts 2026 Estimate
A homeowner in Somerville can find a prefab ADU advertised at $120,000 to $180,000 for a 600-square-foot unit, but once site work, foundation, utilities, permits, and installation are added, the actual total often lands at $200,000 to $300,000. In Massachusetts, that advertised unit price is often only part of the story, and in the Greater […]