ADU Construction

An ADU, or Accessory Dwelling Unit, is a smaller secondary living space located on the same property as a primary home. In Massachusetts, ADUs are commonly used as in-law apartments, guest suites, long-term rentals, or flexible living space for adult children or aging parents. They can be attached to the main home, built above a garage, or constructed as a detached structure, depending on local zoning.

Yes, ADUs are allowed in many South Shore communities, including Plymouth, but regulations vary by town. Zoning rules may limit size, placement, parking, owner occupancy, or whether the unit can be rented. Fitzgerald Remodeling & Construction works with local zoning bylaws and permitting offices to ensure each ADU design complies with town-specific requirements before construction begins.

The cost to build an ADU in Massachusetts typically ranges from $200,000 to $400,000+, depending on size, location, site conditions, and level of finishes. Attached ADUs and garage conversions are often more cost-effective than fully detached units. Factors such as utility connections, foundation work, and permitting also affect total cost.

Yes, many homeowners build ADUs specifically as in-law apartments or rental units. Some towns allow long-term rentals but restrict short-term rentals, while others require owner occupancy. It’s important to review local bylaws early in the planning process to understand how the ADU can legally be used now and in the future.

The ADU process typically includes site evaluation, zoning review, design development, permitting, construction, and final inspections. A design-build firm like Fitzgerald Remodeling & Construction manages these steps as a single, coordinated process, helping homeowners avoid delays, unexpected costs, and compliance issues while delivering a fully finished, move-in-ready ADU.