Detached ADU Builder in Las Vegas
Fully independent accessory dwelling units — 600 to 1,200 sq ft — built to Clark County code with their own kitchen, bath(s), HVAC and utility service. Design, permits, and construction under one licensed NV general contractor (NSCB #0095372).
What's included in a Build4U detached ADU
- Zoning + feasibility review for your specific parcel (setbacks, coverage, parking).
- Architectural design, structural engineering, MEP and Title-24 energy compliance.
- Foundation, framing, roofing, stucco or lap siding to match the primary residence.
- Independent HVAC (mini-split or full split system) and dedicated electrical sub-panel.
- Full kitchen with cabinets, quartz counters and appliances; one or two full baths.
- Permit filing, plan review response, and final inspections across all trades.
Typical investment
$205K – $330K+turnkey for a 600–1,200 sq ft detached ADU. See the full ADU cost breakdown.
Related
FAQs
How much does a detached ADU cost in Las Vegas?
A permitted detached ADU in Clark County runs $205K–$330K+ turnkey — 600–1,200 sq ft with independent kitchen, bath(s), HVAC and electrical. Site slope, utility separation and fire-sprinkler thresholds are the biggest cost drivers.
How long does a detached ADU take to build?
8–14 weeks of design + engineering, 4–8 weeks of Clark County plan review, then 24–36 weeks on-site. Total 9–14 months from contract to certificate of occupancy is realistic for a fully independent unit.
Do I need separate utilities for a detached ADU?
Not always — many detached ADUs sub-feed from the main house's electrical panel and share water/sewer. Separate NV Energy service drops add $6K–$14K and 4–8 weeks; separate sewer laterals are required when the run is impractical or the AHJ mandates it.
Can I rent out a detached ADU in Las Vegas?
Long-term rental is generally permitted for a properly built and permitted ADU on residentially-zoned land in Clark County and the City of Las Vegas. Short-term rental (Airbnb-style) is heavily restricted across the valley — always confirm current rules before building for STR income.
What ADU sizes make financial sense?
600–800 sq ft one-bedrooms give the best cost-per-square-foot; 900–1,200 sq ft two-bedrooms return more rent but push you into fire-sprinkler and setback triggers. We model both against your lot before design.
