Home addition — Second-story addition Cost in Las Vegas, 2026

Why second-story addition × Las Vegas produces this band

A second-story addition scope for a home addition in Las Vegas combines two price levers: scope and metro labor rates. A second-story addition requires the existing foundation to be verified (sometimes reinforced), structural beam and column work to carry the new load, a new roof replacing the old, and a new staircase. Most complex addition type. Against the national median remodel labor rate, Las Vegas runs 2% below the national median — so the second-story addition band comes in 50% above 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 second-story addition scope

• ·Structural engineer for load path + foundation capacity
• ·Full existing-roof removal and new roof install
• ·New staircase location (often forces a first-floor layout change)
• ·Weather protection of the existing house during construction

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 home addition with Baily.

Baily asks the eight questions that determine where your project lands inside the $206K-$470K 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 second-story addition scope home addition in Las Vegas?

  $205,800-$470,400, with the median landing near $338,100. The range reflects finish tier and layout complexity within the second-story addition scope; the Las Vegas labor multiplier of 0.98× vs national median is baked in.

• How long does a second-story addition scope home addition take in Las Vegas?

  28-42 weeks of on-site construction for the second-story addition 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?

  Foundation inadequacy — if the existing foundation can't carry the new load, underpinning or new footings add $25-50K and 4-8 weeks.