Looking for accessory dwelling unit cost in Salt Lake City, UT? Call AccessoryDwellingUnit Solutions for a contact a provider — no obligation. Licensed adu builders serve Salt Lake City and the surrounding area, and you'll get straight answers on timing and what affects the price.

Last updated: September 24, 2026

What affects the price

Building an ADU involves several moving parts that shape your total budget. The biggest factor is whether you choose a prefabricated unit or a custom build on-site. Site preparation is also significant; if your land requires extensive grading, utility trenching, or foundation work, costs will climb. Your choice of finishes—like kitchen cabinetry, flooring, and siding materials—also shifts the bottom line. We help you navigate these variables to find a setup that fits your property. Exact pricing confirmed free on the call.

About this service

Pricing for an ADU is driven by the quality of finishes, the foundation type, and the complexity of your site’s terrain. Projects on flat, accessible lots are generally more affordable than those requiring significant grading or utility trenching. Exact pricing confirmed free on the call.

Frequently asked in Salt Lake City

What are the disadvantages of ADUs?

Potential disadvantages for ADUs in Salt Lake City could include upfront construction costs and the time required to complete the build. You should also consider any potential impact on your yard space or privacy. However, the benefits of additional living space and potential rental income often outweigh these concerns.

How much does an ADU cost in Massachusetts?

What are the rules for ADUs in California?

California has its own ADU legislation. In Salt Lake City, Utah, ADU rules are determined by local city ordinances. These typically address aspects such as setbacks from property lines, lot coverage limitations, and the maximum allowable size of an ADU. We can help you understand these specific local regulations.

Is ADU allowed in Maryland?

ADU regulations vary significantly by state and city. In Salt Lake City, Utah, ADUs are generally permitted, subject to specific zoning requirements. We can help you determine if your property meets these criteria and what types of ADUs are allowed under city code.

What are the rules for ADU in California?

California has its own set of ADU laws. For Salt Lake City, Utah, the rules are set by the city. These often include details about the ADU's placement on the lot and any required off-street parking. Understanding these local rules is crucial for a smooth process.

Also serving nearby: West Valley City · West Jordan · Sandy · Lehi · Orem

All cities in Utah →

More on this: HUD ADU resources — ADU policy and financing research.

Service area details

209,593residents

1,890per sq mile

8ZIP codes served

Serving all of Salt Lake City — population 209,593; about 1,890 residents per square mile across 110.9 sq mi. ZIP codes covered include 84101, 84102, 84103, 84104, 84105, 84106, 84107, 84108.

Neighborhoods served in Salt Lake City: Sugar House, The Avenues, Downtown Salt Lake City, Federal Heights, Liberty Wells — and every surrounding area.