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
Accessory dwelling unit homes are fully functional, independent residences that share a lot with a main house. You need one of these if you are looking to increase the value of your property or accommodate changing family needs, such as adult children or elderly parents. These homes are designed to be comfortable and complete, offering all the amenities of a standard house in a smaller footprint. We specialize in designing these homes to complement your existing property and neighborhood aesthetic.
Frequently asked in St. George
What exactly is an accessory dwelling unit in St. George?
An accessory dwelling unit (ADU) is a secondary housing unit on a single-family residential lot in St. George. It can be attached to the primary home or a standalone structure like a backyard cottage. These units provide independent living quarters with their own kitchen, bathroom, and sleeping area. They are designed to be a complete, albeit smaller, dwelling. The specific regulations for ADUs in St. George dictate size, placement, and access requirements.
What are the general steps for ADU building in St. George?
The ADU building process in St. George begins with a site assessment to confirm feasibility based on local zoning. Next, detailed architectural plans are developed, adhering to St. George's building codes and setback requirements. Permitting applications are then submitted to the city for review and approval. Once permits are secured, construction commences, followed by inspections at various stages. The final step involves obtaining a certificate of occupancy for the completed ADU.
What factors influence the cost of an accessory dwelling unit in St. George?
The cost of an ADU in St. George is influenced by numerous factors, including the unit's size and complexity of design. Material choices for finishes, fixtures, and structural components significantly impact the overall expense. Site preparation, such as excavation and utility connections, also adds to the budget. The specific foundation type required for your St. George property and any necessary landscaping or hardscaping will further affect the final quote. Lastly, permit fees and any specialized engineering reports contribute to the total cost.
How do I find local ADU services in St. George?
What is involved in accessory dwelling unit construction in St. George?
Accessory dwelling unit construction in St. George involves several key phases. Initially, site preparation and foundation work are completed, followed by framing of walls and roof. Plumbing, electrical, and HVAC systems are then installed. Interior and exterior finishes are applied, including insulation, drywall, flooring, and siding. Finally, fixtures are installed, and the unit undergoes final inspections to ensure compliance with all St. George building codes before occupancy.
Can I build an accessory dwelling unit for rent in St. George?
Yes, building an accessory dwelling unit for rent in St. George is generally permitted, provided it meets all local zoning and building regulations. St. George has specific ordinances that govern the creation of ADUs, including requirements for owner occupancy of the primary dwelling or the ADU itself, depending on the specific rules. It's crucial to consult with the city's planning department to understand the exact stipulations regarding rental ADUs to ensure full compliance.
What is the process for getting an ADU permit in St. George?
Obtaining an ADU permit in St. George requires submitting a complete set of construction plans to the city's building department. These plans must detail architectural, structural, mechanical, electrical, and plumbing aspects of the proposed ADU. A permit application form, along with all required supporting documents and fees, must also be submitted. The plans will be reviewed for compliance with St. George's zoning ordinances and building codes before a permit is issued.
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, Coral Canyon, SunRiver — and every surrounding area.
Areas we serve
Browse by state, then city.
