Prefabricated accessory dwelling unit — Las Vegas, NV

Last updated: September 24, 2026

What affects the price

Building an ADU involves several moving parts that shape your total investment. The final figure depends heavily on whether you choose a prefab unit or a custom build from the ground up. Site conditions are another major factor; if your property requires extensive grading, utility trenching, or foundation work, costs will climb. You also have to consider your choice of finishes, like high-end appliances or custom cabinetry. Navigating local permit fees and impact assessments also adds to the total.

About this service

A prefab ADU is built in a factory and then transported to your property for final assembly. You might choose this if you want a faster construction timeline and less mess in your backyard compared to a traditional build. Because the structure is made off-site, it often helps with site control and weather-related delays. Exact pricing confirmed free on the call.

Frequently asked in Las Vegas

Also serving nearby: North Las Vegas · Henderson · St George · Victorville · Hesperia

All cities in Nevada →

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

Service area details

Serving all of Las Vegas — population 660,929; about 4,658 residents per square mile across 141.9 sq mi. ZIP codes covered include 89101, 89102, 89103, 89104, 89105, 89106, 89107, 89108.

Neighborhoods served in Las Vegas: Summerlin, Henderson, Green Valley, Spring Valley, Centennial Hills, The Lakes — and every surrounding area.