5 Best ADU Builders in Salt Lake City, Utah
Verified ADU contractors and builders in Salt Lake City, UT
Showing 1–5 of 5 listings
Built By Design Construction
As Utah’s leading ADU builder, we know the process inside and out and have worked closely with Salt Lake County over the years. It’s part of what sets us apart — that, and working with you personally to create a custom ADU that looks great and meets your needs.
Crossbeam Builders LLC
Specializing in garage-to-living-space conversions throughout Salt Lake City, this contractor transforms underutilized garages into functional rooms such as bedrooms, offices, and recreation spaces with expert craftsmanship and attention to local building codes. From structural modifications to finishing touches, they handle every aspect of your conversion project to maximize your home's usable square footage.
Johnston Construction
Johnston Construction’s skilled ADU builders work closely with each client to ensure the design brings their unique vision to life while meeting their specific needs and preferences. We seamlessly manage all aspects of the building process, from permitting to construction, ensuring your ADU meets the highest quality and safety standards.
Salt Lake Custom Builders
At Salt Lake Custom Builders, we are dedicated to delivering exceptional quality through expert craftsmanship and attention to detail. Serving Salt Lake City and the surrounding areas, our mission is rooted in transparency, trust, and long-term client partnerships.
Soul Builders SLC
Specializing in accessory dwelling unit construction throughout Salt Lake City, we help homeowners maximize their property potential with expertly built ADUs designed to meet local codes and your family's needs.
Frequently Asked Questions — ADU Builders in Salt Lake City
How much does it cost to hire an ADU builder in Salt Lake City?
ADU construction costs in Salt Lake City, Utah 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 Salt Lake City to get accurate quotes for your specific project.
How long does it take to build an ADU in Salt Lake City?
In Salt Lake City, 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 Utah local regulations. Prefab and modular ADUs often have faster timelines than site-built units.
Do I need a permit to build an ADU in Salt Lake City?
Yes, a building permit is required for ADU construction in Salt Lake City, Utah. Your ADU builder will typically handle the permit application as part of their service. Utah has adopted streamlined ADU permitting laws in recent years, which may reduce wait times.
What types of ADUs can be built in Salt Lake City?
Common ADU types in Salt Lake City 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 Salt Lake City ADU builder can advise on what's allowed on your specific parcel.