ADU Locator

1 Best ADU Builders in Eagle Mountain, Spanish Fork, and Utah County, Utah

Verified ADU contractors and builders in Eagle Mountain, Spanish Fork, and Utah County, UT

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R5 Homes

R5 Homes leads Utah in building FLEX-ADU homes, designed with integrated floor plans, soundproofing, and private entrances—making homeownership more affordable and future-proof. R5 Homes specializes in designing and building homes with fully integrated Accessory Dwelling Units (ADUs) that offer privacy, flexibility, and long‑term value.

(801) 871-9098
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Frequently Asked Questions — ADU Builders in Eagle Mountain, Spanish Fork, and Utah County

How much does it cost to hire an ADU builder in Eagle Mountain, Spanish Fork, and Utah County?

ADU construction costs in Eagle Mountain, Spanish Fork, and Utah County, Utah vary widely depending on size, type, and site conditions. Detached ADUs typically range from $150,000–$400,000+, while garage conversions and attached ADUs can be more affordable. Contact multiple builders in Eagle Mountain, Spanish Fork, and Utah County to get accurate quotes for your specific project.

How long does it take to build an ADU in Eagle Mountain, Spanish Fork, and Utah County?

In Eagle Mountain, Spanish Fork, and Utah County, the ADU construction timeline typically ranges from 6 to 18 months from permit application to move-in. Permitting alone can take 2–6 months depending on Utah local regulations. Prefab and modular ADUs often have faster timelines than site-built units.

Do I need a permit to build an ADU in Eagle Mountain, Spanish Fork, and Utah County?

Yes, a building permit is required for ADU construction in Eagle Mountain, Spanish Fork, and Utah County, Utah. Your ADU builder will typically handle the permit application as part of their service. Utah has adopted streamlined ADU permitting laws in recent years, which may reduce wait times.

What types of ADUs can be built in Eagle Mountain, Spanish Fork, and Utah County?

Common ADU types in Eagle Mountain, Spanish Fork, and Utah County include detached ADUs (backyard cottages), attached ADUs, garage conversions, basement conversions, and prefab/modular ADUs. The best type for your property depends on lot size, zoning, and budget. A local Eagle Mountain, Spanish Fork, and Utah County ADU builder can advise on what's allowed on your specific parcel.