Last updated: September 24, 2026
What affects the price
Building an ADU is a major project, and the final bill depends on a few key things. Site prep is a big factor; if your land is sloped or needs extensive utility connections, costs go up. The materials you choose—from siding to kitchen finishes—also change the math significantly. Whether you’re building a detached unit or converting an existing garage shifts the permit requirements and structural work needed. We provide exact pricing confirmed free on the call.
About this service
An ADU unit is a secondary housing structure located on the same lot as a primary home. Whether you need a home office, a gym, or a guest house, an ADU adds functional square footage to your land. You need this when you run out of space inside your main house but don't want to move.
Frequently asked in West Valley City
Are there grants for accessory dwelling units in Utah?
What does ADU construction involve in West Valley City?
What's the typical accessory dwelling unit cost in Utah?
The cost for an accessory dwelling unit in Utah can vary significantly based on factors like size, design complexity, materials chosen, and site preparation needs. A smaller, simpler unit will naturally cost less than a larger, more complex one with high-end finishes. To get an accurate figure for your specific project in West Valley City, it's best to get a personalized quote. This will account for all the elements unique to your property and desired ADU.
Are ADU services available in New Hampshire?
Can I get an ADU quote in West Valley City?
What is a prefabricated accessory dwelling unit?
A prefabricated accessory dwelling unit is an ADU that is built in sections or modules in a factory setting before being transported to your West Valley City property for assembly. This method can often lead to a quicker construction timeline once the foundation is in place. Prefabricated units are designed to meet building codes and offer a high level of quality control. They are a popular option for homeowners looking for efficiency in their ADU project.
Do you offer homes with mother-in-law suites?
Also serving nearby: West Jordan · Salt Lake City · Sandy · Lehi · Orem
More on this: HUD ADU resources — ADU policy and financing research.
Service area details
Serving all of West Valley City — population 134,470; about 3,753 residents per square mile across 35.8 sq mi. ZIP codes covered include 84119, 84120, 84128.
Neighborhoods served in West Valley City: Hunter, Smelting Plant, West Kearns, Overlake, Woodland Hills — and every surrounding area.
Areas we serve
Browse by state, then city.
