2 Best ADU Builders in Brunswick, Maine

Verified ADU contractors and builders in Brunswick, ME

Frequently Asked Questions — ADU Builders in Brunswick

How much does it cost to hire an ADU builder in Brunswick?

ADU construction costs in Brunswick, Maine vary widely depending on size, type, and site conditions. Detached ADUs typically range from $150,000–$400,000+, while garage conversions and attached ADUs can be more affordable. Contact multiple builders in Brunswick to get accurate quotes for your specific project.

How long does it take to build an ADU in Brunswick?

In Brunswick, the ADU construction timeline typically ranges from 6 to 18 months from permit application to move-in. Permitting alone can take 2–6 months depending on Maine local regulations. Prefab and modular ADUs often have faster timelines than site-built units.

Do I need a permit to build an ADU in Brunswick?

Yes, a building permit is required for ADU construction in Brunswick, Maine. Your ADU builder will typically handle the permit application as part of their service. Maine has adopted streamlined ADU permitting laws in recent years, which may reduce wait times.

What types of ADUs can be built in Brunswick?

Common ADU types in Brunswick include detached ADUs (backyard cottages), attached ADUs, garage conversions, basement conversions, and prefab/modular ADUs. The best type for your property depends on lot size, zoning, and budget. A local Brunswick ADU builder can advise on what's allowed on your specific parcel.