Do you build second-story additions in Henderson?

Yes — second-story additions are one of our most common Henderson scopes when the lot is too tight for a ground-floor footprint expansion. We coordinate the structural engineering, City of Henderson permits and HOA architectural review in one workflow.

Will the addition match my existing Henderson home?

Yes. We match stucco texture and color, window line, roof profile and trim details so the addition reads as original. Interior finishes carry through from the adjacent rooms.

How long does a Henderson home addition take?

Most Henderson additions run 4–7 months total — 8–14 weeks for design, engineering and plan check, then 12–22 weeks on-site. Second-story additions add 4–8 weeks to the on-site schedule.

What does a home addition cost in Henderson?

Most Henderson additions run $155–$425 per square foot all-in. A 250 sq ft primary-suite expansion typically lands at $72,000–$135,000; a 600 sq ft family-room addition runs $195,000–$330,000; a full second-story addition is $310,000–$620,000+.

Addition or detached casita — which is right for me?

An addition extends the main house and shares utilities. A casita / ADU is detached with its own entrance and (usually) kitchen. For more space for your own household, an addition is usually the better fit; for guest housing or rental income, see our Henderson casita & ADU page.

How much does it cost to add a room in Henderson?

A 250–450 sq ft single-story room addition runs $120,000–$210,000 in Henderson, including foundation, framing, roof tie-in, matched stucco and tile, windows, HVAC and electrical extension, and all permits. Adding a full bathroom to the scope adds roughly $35,000–$60,000.

Can I add a second story to my Henderson home?

Often yes, but it depends on your existing foundation, first-floor wall framing and the city's height limit for your zoning. We commission a structural evaluation during feasibility. Where the existing structure can't carry it, reinforcement is possible but changes the budget significantly — you'll know before design starts.

How long does a Henderson addition take?

Plan 8–9 months from contract to handover: 2–2.5 months of design and engineering, 1.5–2 months of permits and HOA review, and 4–5 months on-site. Second-story additions run longer because the existing roof comes off and the weather window matters.

Can we live in the house during an addition?

For a single-story room or suite addition, yes — the work happens outside the existing envelope until the tie-in, which is a short, contained window we schedule with you. For a second-story addition the roof comes off the existing house, so moving out is required for most of the build.

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Henderson, NV

Home Additions in Henderson, NV

Build4U is a licensed Henderson home addition contractor designing and building room additions, primary-suite expansions, family-room extensions and second-story additions across Anthem, Seven Hills, MacDonald Highlands, Green Valley and Inspirada. One team handles structural engineering, City of Henderson permits, foundation, framing and finish — so the new addition reads as original to the house.

Full home additions details

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Working in Henderson

Many Henderson additions are primary-suite expansions on 1990s and early-2000s estates in Anthem and Seven Hills, or family-room and second-story additions where the lot is too tight for a footprint expansion. We match stucco texture, window line and roof profile to the existing house and submit HOA architectural packages for Anthem CC, Seven Hills, MacDonald Highlands and Lake Las Vegas in parallel with the City of Henderson plan check.

Permits & review

City of Henderson Building & Safety permitting handled in-house, including structural, mechanical, electrical and plumbing. HOA architectural review coordinated for Anthem CC, Seven Hills, MacDonald Highlands, Green Valley Ranch and Lake Las Vegas.

Neighborhoods we serve

Anthem & Anthem Country Club
Seven Hills
MacDonald Highlands
Green Valley & Green Valley Ranch
Lake Las Vegas
Inspirada & Cadence

Neighborhood pages in Henderson

Home Additions in Anthem

Also serving Home Additions in Summerlin.

Nevada State Contractors Board GC license #0095372 · General liability + workers' comp · BBB-rated · Over a decade building in the Las Vegas Valley.

Henderson pricing

What a home additions typically costs in Henderson

Home addition cost in Henderson is driven by square footage, foundation and roof tie-in complexity, and whether the addition is single or second story. Real 2025 Henderson ranges:

Room addition

$120,000 – $210,000

250–450 sq ft single-story addition
New foundation and roof tie-in
HVAC and electrical extended from existing
Stucco and roofing matched to the house
Windows and doors
City of Henderson permits & inspections

Primary suite or great-room addition

$225,000 – $400,000

500–900 sq ft addition
Full bath or kitchen extension included
Engineered structural tie-in to existing framing
New HVAC zone
Custom millwork and finishes
HOA architectural review handled

Second-story addition

$425,000 – $800,000+

800–1,500 sq ft second story
Foundation and existing-wall structural upgrade
New stair and structural load path
Full mechanical, electrical and plumbing
Roof removal and rebuild
Complete architectural and engineering package

Process

How a Henderson home additions runs, week by week

01Weeks 1–3

Feasibility & survey

Setback and lot-coverage check, existing foundation and roof-tie-in assessment, and a realistic scope-and-budget conversation before design.

02Weeks 4–10

Design & engineering

Architectural drawings tying the addition into the existing structure, structural engineering for the new load path and roof connection, elevations matched to the existing facade, and a full finish spec.

03Weeks 11–17

Permits & HOA

Permit submittal with structural calcs, plus HOA architectural review — additions always trigger review because they change the exterior. Both run in parallel.

04Weeks 18–24

Foundation & framing

Excavation, footings, slab, framing and roof tie-in, windows and doors, then stucco and roofing matched to the existing house.

05Weeks 25–30

Rough-in & close-up

Plumbing, electrical and HVAC extended from the existing systems (we verify panel and unit capacity first), insulation, drywall and texture.

06Weeks 31–36

Finishes & handover

Flooring, cabinetry, tile, paint, trim, lighting, final inspections, punch list and handover with the warranty binder.

Local detail

What's different about a home addition in Henderson

Setbacks and lot coverage decide what's possible before design does. Henderson parcels — especially in Anthem, Inspirada and Cadence, where lots are tighter than the older Green Valley stock — often have less buildable rear yard than owners expect. We pull the parcel data and mark the buildable envelope on day one.

Roof tie-in is where addition quality shows. Matching an existing Henderson tile roof means sourcing the same profile and color, and blending the new plane so it doesn't read as a bolt-on. We source tile matches during design; discontinued profiles sometimes mean pulling tile from a less-visible elevation and using new tile there instead.

A second-story addition is a structural project first. The existing foundation and first-floor walls have to be evaluated and usually reinforced to carry the new load, and the entire existing roof comes off. It's the most disruptive scope we build, and it requires moving out — we're direct about that before you commit.

Every Henderson addition triggers HOA architectural review because it changes the exterior by definition. Anthem CC, Seven Hills, MacDonald Highlands and Lake Las Vegas each want elevations, material samples and neighbor sightline analysis. Plan on 3–6 weeks, submitted in parallel with the city.

Permits & jurisdiction

Home addition permits go to the City of Henderson Building & Safety Division with a full structural submittal — engineered calculations for the new foundation, framing, roof tie-in and, on second stories, the reinforcement of existing walls and footings — plus mechanical, electrical and plumbing. Plan review typically runs 4–8 weeks. HOA architectural review is mandatory for additions and runs in parallel; we prepare and submit both.

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Other services we offer in Henderson

Whole-Home Remodeling

Henderson, NV

Casita & ADU Construction

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Home Additions in Henderson, answered.

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