ADU — Detached 1-bedroom Cost in Las Vegas, 2026

Why detached 1-bedroom × Las Vegas produces this band

A detached 1-bedroom scope for a adu in Las Vegas combines two price levers: scope and metro labor rates. A detached 1-bedroom ADU is the category anchor: 500-750 SF standalone unit with a full kitchen, full bath, and bedroom. Separate foundation, roof, MEP, and entrance. Against the national median remodel labor rate, Las Vegas runs 2% below the national median — so the detached 1-bedroom band comes in at the mid-range, then scales 2% below the national median on top of that. Permit timelines for residential work in Las Vegas typically run 3-8 weeks, which is the window you plan your design and decision sequence against. This page gives you the actual 2026 Las Vegas bands for this exact combination, plus the three cost drivers Baily asks about first when scoping the project live.

What drives cost for a detached 1-bedroom scope

• ·New foundation (slab-on-grade or stem-wall)
• ·New roof system and weather envelope
• ·Full MEP rough-in from the street (water, sewer, gas, electric)
• ·Site prep, grading, drainage

What makes Las Vegas different

• Labor — Gaming + hospitality remodel cycles create periodic labor-supply tightness — residential remodel competes with hotel refurbishment.
• Labor — Summer 110°F+ heat shifts exterior trades to pre-dawn shifts.
• Labor — Non-union residential market with competitive rates outside of Strip-corridor peak cycles.
• Material — Desert-climate materials (reflective roofing, drip irrigation integration) are a small premium.
• Material — Regional supply from LA and Phoenix distribution hubs — lead times typically short.

Las Vegas rules that affect this scope

• Clark County Department of Building & Fire Prevention handles permits for unincorporated areas (most of the Strip + suburbs).
• City of Las Vegas handles residential within city limits — separate process from Clark County.
• Henderson and North Las Vegas each have their own building departments with distinct amendments.
• Nevada State Contractors Board (NSCB) licensing required for any work over $1,000 — verify license class matches scope.

Scope your adu with Baily.

Baily asks the eight questions that determine where your project lands inside the $176K-$372K band for Las Vegas and hands the scoped brief to one licensed builder.

Related pages

Questions LA homeowners actually ask

• What is the 2026 cost range for a detached 1-bedroom scope adu in Las Vegas?

  $176,400-$372,400, with the median landing near $274,400. The range reflects finish tier and layout complexity within the detached 1-bedroom scope; the Las Vegas labor multiplier of 0.98× vs national median is baked in.

• How long does a detached 1-bedroom scope adu take in Las Vegas?

  26-40 weeks of on-site construction for the detached 1-bedroom scope, plus 3-8 weeks of permit review in Las Vegas if the scope requires a permit. Cosmetic-only refreshes often skip permits; anything touching plumbing, electrical, or structural does not.

• What is the single biggest budget-overrun risk for this scope?

  Sewer connection — if the existing lateral runs under the new foundation line, a new lateral cut plus utility easement and right-of-way bond can add $12-22K.