4 Best ADU Builders in Concord, New Hampshire
Verified ADU contractors and builders in Concord, NH
Showing 1–4 of 4 listings
Cobb Hill Construction
Specializing in garage-to-living-space conversions, this Concord-based contractor transforms underutilized garages into functional rooms that add comfort and value to your home. Whether you're looking to create an extra bedroom, home office, or recreation space, their experienced team handles every aspect of the conversion process.
Currid Builders
Specializing in accessory dwelling unit construction throughout the Concord area, this contractor brings expertise in designing and building efficient, code-compliant ADUs that maximize your property's potential. Whether you're looking to add rental income, create space for aging parents, or expand your home, they deliver quality craftsmanship tailored to New Hampshire's building standards.
Loch & Key Homes
We specialize in accessory dwelling unit construction throughout the Concord area, helping homeowners add independent living spaces to their properties. From design through completion, we handle every aspect of ADU building to maximize your home's potential and value.
New Hampshire Garage
Transform your garage into functional living space with expert garage-to-living-space conversions tailored to your Concord home's unique needs. Our experienced team specializes in converting underutilized garages into beautiful bedrooms, offices, studios, and recreational areas that add value and comfort to your property.
Frequently Asked Questions — ADU Builders in Concord
How much does it cost to hire an ADU builder in Concord?
ADU construction costs in Concord, New Hampshire 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 Concord to get accurate quotes for your specific project.
How long does it take to build an ADU in Concord?
In Concord, 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 New Hampshire local regulations. Prefab and modular ADUs often have faster timelines than site-built units.
Do I need a permit to build an ADU in Concord?
Yes, a building permit is required for ADU construction in Concord, New Hampshire. Your ADU builder will typically handle the permit application as part of their service. New Hampshire has adopted streamlined ADU permitting laws in recent years, which may reduce wait times.
What types of ADUs can be built in Concord?
Common ADU types in Concord 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 Concord ADU builder can advise on what's allowed on your specific parcel.