ADU construction is one of the highest-return investments a Utah homeowner can make right now. Rental income, multigenerational housing, property value increase — the numbers work in most cases. We're happy to walk you through the math for your specific property and lot.
We build all types of accessory dwelling units across Salt Lake County, Utah County, and Davis County. ADU rules changed significantly in recent years — both at the state level in Utah and in individual municipalities like Salt Lake City, Provo, and Lehi. We stay current on all of it so you don't have to spend hours deciphering zoning codes.
Backyard Cottage / Detached ADU
A detached accessory dwelling unit is a separate structure on your property — its own foundation, walls, roof, and utilities. These are popular in neighborhoods like Sugar House, Millcreek, and East Bench where lots have usable space behind the main house. We handle site prep, foundation, framing, roofing, mechanical rough-ins, insulation, drywall, flooring, cabinetry, and final finishes. We also coordinate with your utility companies on electrical and plumbing service connections.
Garage Conversion ADU
Converting an attached or detached garage into a living space is one of the more cost-effective ADU options in Utah. We frame and insulate the walls and ceiling, add or relocate the electrical panel, install HVAC, add a bathroom, kitchen, and all the finishes that make it a real dwelling unit. In older Murray and Holladay neighborhoods, garage conversions are especially common because the existing structure gives you a significant head start.
Basement Apartment ADU
Many Salt Lake County homes already have unfinished or partially finished basements that can be converted into legal ADUs. This requires proper egress (usually a window or separate exterior door), code-compliant ceiling height, a kitchen, bathroom, and separate entrance. We've done basement ADU conversions all over the valley — from South Jordan to the Avenues to Cottonwood Heights.
Home Addition ADU
Some lots and floor plans work best with an attached addition that functions as an ADU. We design and build attached ADUs that share a wall with the main home but have their own exterior entrance, kitchen, bathroom, and living space. These are common in areas like American Fork and Lehi where lot sizes allow for expansion.
We are licensed and insured in Utah and have been building ADUs across Salt Lake County, Utah County, and Davis County for over a decade. Our clients consistently tell us three things set us apart: we explain the process clearly before they commit, we stick to the schedule we give them, and the finished product is built to last.
ADU construction is one of the highest-return investments a Utah homeowner can make right now. Rental income, multigenerational housing, property value increase — the numbers work in most cases. We're happy to walk you through the math for your specific property and lot.
Yes—but it depends on your city and your specific property.
In Utah, Accessory Dwelling Units (ADUs) are regulated primarily at the local level, meaning each city sets its own rules. However, state law requires most municipalities to allow internal ADUs (IADUs)—typically basement or attached units—within single-family homes, as long as certain conditions are met.
Detached ADUs (separate backyard units) are more restricted and may not be allowed in every city or neighborhood.
To determine if your property qualifies, you’ll need to check:
Zoning designation (must allow residential use with ADUs)
Lot size and layout
Owner-occupancy requirements
Parking requirements
Utility access and safety compliance
Most ADUs in Utah cost between $75,000 and $170,000+, depending on size, type, and finishes.
Key cost factors include:
- Construction ($190–$210 per sq ft)
- Design and permits
- Utilities and site work
Important: Hidden costs like utility upgrades and permits can significantly impact your budget.
The ADU process typically follows these steps:
- Check city zoning and rules
- Evaluate your property
- Secure financing
- Design your ADU
- Submit permits
- Build and complete inspections
Timeline: Usually 4–9 months total from planning to completion.
Our team is here to answer your questions and help you get started on turning your vision into reality.