5 Best ADU Builders in Tacoma, Washington
Verified ADU contractors and builders in Tacoma, WA
Showing 1–5 of 5 listings
Built Right Eco Workshop LLC
Transform your garage into functional living space with expert conversion services in Tacoma, WA. We specialize in thoughtful garage-to-living-space renovations that maximize your home's potential while maintaining quality craftsmanship and eco-conscious building practices.
DADU Homes
Specializing in Accessory Dwelling Unit construction throughout the Tacoma area, this builder helps homeowners add rental units or guest spaces to their properties with expert planning and craftsmanship. From design consultation through final inspection, they manage every step of creating a compliant, high-quality ADU on your existing lot.
Garages Etc Inc
Transform your underutilized garage into functional living space with expert conversion services in the Tacoma area. We specialize in garage-to-living-space renovations, handling everything from structural modifications to finishing touches that maximize your home's usable square footage.
Northwest ADU
Specializing in accessory dwelling unit construction throughout the Tacoma area, this contractor helps homeowners add functional living spaces to their properties with expert design and skilled craftsmanship. From initial planning through final completion, they deliver quality ADU solutions tailored to your home and budget.
Tacoma DADU
Specializing in accessory dwelling unit construction throughout the Tacoma area, this builder helps homeowners maximize their property potential with expertly designed and built ADUs. From initial planning through final inspection, they deliver quality residential additions that increase home value and create flexible living spaces.
Frequently Asked Questions — ADU Builders in Tacoma
How much does it cost to hire an ADU builder in Tacoma?
ADU construction costs in Tacoma, Washington 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 Tacoma to get accurate quotes for your specific project.
How long does it take to build an ADU in Tacoma?
In Tacoma, 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 Washington local regulations. Prefab and modular ADUs often have faster timelines than site-built units.
Do I need a permit to build an ADU in Tacoma?
Yes, a building permit is required for ADU construction in Tacoma, Washington. Your ADU builder will typically handle the permit application as part of their service. Washington has adopted streamlined ADU permitting laws in recent years, which may reduce wait times.
What types of ADUs can be built in Tacoma?
Common ADU types in Tacoma 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 Tacoma ADU builder can advise on what's allowed on your specific parcel.