Thinking about building an ADU in Massachusetts? Learn the new ADU law, zoning rules, costs, timelines, and how to get started today.

Financing an ADU in Massachusetts doesn’t have to be overwhelming. From HELOCs and cash-out refinances to construction loans and emerging ADU-specific programs, homeowners have more options than ever. Learn how to choose the right financing strategy to turn your backyard into long-term income, flexibility, and property value.

Prefab ADUs are an increasingly popular option for Massachusetts homeowners but factory-built doesn’t mean regulation-free. This guide explains how prefab and modular ADUs are treated under Massachusetts law, including zoning, permits, septic requirements, and when prefab construction makes sense compared to a traditional build.

Thinking about an ADU in 2026? Learn why new Massachusetts ADU rules, Title 5 clarity, and early planning make this the perfect time to start.