Last updated: September 24, 2026
What affects the price
Building an ADU is a custom project, so costs vary based on your specific choices. Site conditions are the biggest factor; if your land requires significant grading, utility extensions, or foundation work, those expenses add up quickly. Choosing high-end finishes, custom cabinetry, or complex roof lines will also push the budget higher compared to a standard design. Prefabricated units often offer predictable costs, while custom site-built structures allow for more flexibility but can be harder to estimate upfront. Exact pricing confirmed free on the call.
About this service
ADUs are secondary housing units that provide extra space for guests, family, or renters. You should consider an ADU if you want to increase your property value or need more living space without moving. Prices typically vary based on the square footage, the quality of construction, and necessary utility upgrades for your specific lot. Exact pricing confirmed free on the call.
Frequently asked in St. George
What are the local rules for building an ADU in St. George?
In St. George, Utah, local ADU regulations typically dictate maximum unit size and height, along with specific setback requirements from property lines. You'll need to understand how your lot's dimensions impact the placement and overall footprint of your accessory dwelling unit. Ensuring proper integration with existing utilities, including water, sewer, and electrical, is also a key component of the permitting process. The city's planning department provides detailed guidelines to help you comply with all zoning ordinances for your ADU project.
How do I find a reputable company for ADU services in St. George?
When seeking a company for ADU services in St. George, Utah, look for established professionals with proven experience in the local market. Inquire about their familiarity with St. George's specific building codes and permitting procedures. A reputable firm will be transparent about their construction methods and timelines, and they should be able to provide references from previous ADU projects. Checking for proper licensing and insurance is a fundamental step in selecting the right contractor for your accessory dwelling unit construction.
What factors influence the cost of an ADU in St. George?
The cost of an accessory dwelling unit in St. George, Utah, is primarily determined by its size, the complexity of its design, and the quality of materials selected. Site preparation, including excavation and foundation work, can also contribute significantly to the overall expense, particularly on sloped terrain common in the area. Utility hook-up fees and the cost of obtaining necessary permits are additional considerations. Finally, the choice between a custom-built unit and a prefabricated option will also impact your budget for the ADU.
How much does a permit for an accessory dwelling unit cost in St. George?
Permit costs for an accessory dwelling unit in St. George, Utah, are typically calculated based on the project's estimated construction value and the specific types of inspections required. These fees cover the review of your architectural plans by the city's building department and the subsequent site inspections to ensure compliance with all building codes. It's advisable to obtain a detailed breakdown of these fees from the St. George planning office during your initial consultation. This will help you budget accurately for the permitting phase of your ADU project.
What's involved in getting a contractor for an ADU in St. George?
What is the typical cost of building an accessory dwelling unit in St. George?
The typical cost of building an accessory dwelling unit in St. George, Utah, can vary significantly based on numerous project-specific details. Factors such as the chosen square footage, the level of interior finishing, and the type of foundation required will all play a role. Additional expenses may arise from necessary site grading or complex utility connections required by the local St. George ordinances. Obtaining detailed quotes from experienced ADU builders is the most effective way to ascertain the precise cost for your particular project.
Where can I find accessory dwelling unit builders near me in St. George?
Also serving nearby: North Las Vegas · Henderson · Las Vegas · Peoria · Provo
More on this: HUD ADU resources — ADU policy and financing research.
Service area details
Serving all of St. George — population 104,578; about 1,355 residents per square mile across 77.1 sq mi.
Neighborhoods served in St. George: Bloomington, Green Valley, Kayenta, Stone Cliff, Coral Canyon — and every surrounding area.
Areas we serve
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