Honest, straightforward pricing information so you can plan with confidence. Every project is different, but here is what you can generally expect to invest.
These ranges reflect real project costs in Utah based on current material and labor prices. Your exact cost depends on your lot, the model you choose, finishes, and site conditions. A free property visit gives you the most accurate number.
The most affordable path to a legal ADU. You're working with an existing structure, which eliminates foundation and framing costs. Great for homeowners who want rental income without a large upfront investment.
Factory-built and assembled on your lot. Faster to complete and generally more cost-effective than full custom builds. A great balance of quality, speed, and value for most Utah homeowners.
Built on-site from the ground up with full customization. Maximum design flexibility, premium finishes, and the highest long-term property value. Ideal for homeowners who want something completely tailored to their lot and style.
No two ADU projects are identical. Here are the main factors that move the needle on cost.
Larger units cost more to build. A 400 sq ft studio will always come in lower than a 900 sq ft 2-bedroom. That said, cost per square foot actually decreases as you go bigger.
Modular ADUs are faster and typically less expensive than custom stickbuilt. Garage conversions are the most affordable since you're working with an existing structure.
Sloped lots, poor soil conditions, or limited access can add to site prep costs. Flat, accessible lots with easy utility connections cost less to develop.
Standard finishes are included in base pricing. Upgraded flooring, custom cabinetry, premium appliances, and high-end fixtures can add $10K to $40K depending on selections.
City permit fees in Utah typically range from $3,000 to $12,000 depending on the municipality. We handle all permitting and these fees are included in your estimate.
Connecting to existing water, sewer, gas, and electrical can vary significantly depending on how far your ADU is from the main home and existing infrastructure.
When you look at the numbers, a well-built ADU pays for itself — and then some. Here is what Utah homeowners are seeing.
Depending on size, location, and finishes, Utah ADUs are renting for strong numbers in 2026 especially in Salt Lake City and Park City.
Most ADU owners recoup their full investment through rental income within 5 to 10 years. After that it is pure profit every month.
A finished, permitted ADU adds significant value to your home beyond just the rental income. Buyers pay a premium for properties with ADUs.