Cost to build accessory dwelling unit — Henderson, NV
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
Building an ADU involves costs for permits, site prep, foundation, framing, plumbing, and electrical work. Prices fluctuate based on whether you choose a custom design or a pre-planned layout, as well as the complexity of connecting to existing city utilities. Exact pricing confirmed free on the call.
Frequently asked in Henderson
What does accessory dwelling unit mean in Henderson?
Where can I find local ADU contractors in Henderson?
What is the process for ADU construction in Henderson?
Can I get an ADU quote in Henderson?
How much does an ADU estimate cost in Henderson?
Are 24-hour ADU services available in Henderson?
What are the benefits of ADU housing in Henderson?
Also serving nearby: North Las Vegas · Las Vegas · St George · Victorville · Hesperia
More on this: HUD ADU resources — ADU policy and financing research.
Service area details
Serving all of Henderson — population 337,305; about 2,798 residents per square mile across 120.5 sq mi. ZIP codes covered include 89002, 89009, 89011, 89012, 89014, 89015, 89016, 89044.
Neighborhoods served in Henderson: Green Valley, Anthem, Seven Hills, The Estates, Lake Las Vegas — and every surrounding area.
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