Custom Casitas, ADUs, and Home Additions
in Henderson, NV
Designed, permitted, and built by Kingdom & Co. — recognized as the NARI Remodeler of the Year 2025 and 2026 Regional Winner, featured contractor of choice for eight HGTV Property Brothers homes, and the holder of an unlimited monetary limit on our Nevada State Contractors Board license. Complimentary in-home casita and addition consultation for Henderson homeowners.
Complimentary in-home casita and addition consultation for Henderson homeowners.
Nevada State Contractors Board Licenses #0091618 and #0091629 with an unlimited monetary limit — state-approved to design and build projects of any size.
What We Build In Henderson
Detached Casitas
Standalone guest houses with private entrances, bedrooms, bathrooms, and kitchens. Common on larger lots in MacDonald Highlands, Anthem Country Club, Seven Hills, and Lake Las Vegas, where setbacks and lot coverage rules allow freestanding construction.
Guest Houses
Detached structures designed for visiting family — bedroom, bath, sitting area, and optional kitchenette. Built to integrate architecturally with your main home’s materials, roofline, and finish language.
In-Law Suites
Connected or detached accessory dwellings designed for multigenerational living. Built with aging-in-place considerations — single-level floor plans, ADA-ready bathrooms, zero-threshold showers, and dedicated HVAC and plumbing — when needed for aging parents.
Backyard ADUs
Custom-built Accessory Dwelling Units designed as private backyard living spaces: extra bedrooms, guest accommodations, home offices, or extended-family quarters. Engineered to meet City of Henderson Building & Fire Safety Department standards and your community’s HOA design guidelines from the first drawing.
Room Additions
Attached expansions — bedrooms, primary suites, home offices, living areas. Frequent in Green Valley Ranch, Cadence, Inspirada, and Anthem Country Club where homeowners need space without relocating.
Second-Story Additions
Partial or full upper-level additions to single-story homes. Many of Henderson’s master-planned communities include single-story floor plans where vertical expansion is the most practical path to adding significant square footage without expanding the footprint.
Featured Henderson Project: Harmoni Cove Casita
Harmoni Cove is a custom backyard casita Kingdom & Co. designed and built in Green Valley, Henderson. The project is representative of the work we do across MacDonald Highlands, Anthem, Seven Hills, Lake Las Vegas, and the broader Henderson area — fully permitted through the City of Henderson Building & Fire Safety Department, designed to comply with HOA architectural review committee standards, and built to the same finish standard as the main residence.
A zero-threshold shower with concealed grab-bar reinforcement — an aging-in-place feature integrated into the luxury bathroom design — is one of several details that make Harmoni Cove particularly well-suited for the multigenerational Henderson households we work with most often.
Henderson Casita and Addition Costs (2026 Estimates)
Custom casita and home addition pricing in Henderson depends on scope, finish level, lot conditions, HOA requirements, and whether the structure includes a full kitchen and bathroom (which classifies it as a code-defined ADU). Luxury-finish custom casita construction in the Las Vegas Valley currently runs in a broad range, with final pricing driven by the specific lot, design complexity, and selection of materials and fixtures.
| 500 sq ft detached casita |
800 sq ft detached casita |
1,200 sq ft detached casita |
Room addition | Second-story addition |
|---|---|---|---|---|
| Entry-level builds start around $150,000 Luxury-finish builds commonly reach $300,000+ |
Typically $240,000 – $480,000 | Typically $360,000 – $720,000 | Typically $300 – $500 per square foot of added space | Typically $400 – $700 per square foot of added space |
500 sq ft
detached casita
Entry-level builds start around $150,000
Luxury-finish builds commonly reach $300,000+
800 sq ft
detached casita
Typically $240,000 – $480,000
1,200 sq ft
detached casita
Typically $360,000 – $720,000
Room addition
Typically $300 – $500 per square foot of added space
Second-story addition
Typically $400 – $700 per square foot of added space
Every Kingdom & Co. project starts with a complimentary in-home consultation. During that visit, we evaluate your lot’s buildable envelope, your HOA’s architectural guidelines, and your specific scope — then develop a realistic budget range before any design work begins. Pricing is delivered as a detailed line-item estimate during the design phase. What you approve is what gets built and billed; any change order (a scope change you request or a genuinely unforeseen condition) is documented and approved in writing before work moves forward.
What Henderson Homeowners Need to Know About Casita and ADU Rules
Nevada AB 396 (2025) reshaped ADU rules statewide
Nevada AB 396, signed into law in 2025, standardized many ADU zoning, size, and permitting rules across Nevada municipalities — including Henderson. The law affects what size casita you can build, how it can be used, and in some cases, parking and setback requirements. Kingdom & Co. factors current AB 396 requirements into every Henderson casita design.
Nevada ROAD Act (2025) reshaped permit timelines
Nevada’s ROAD Act (Residential Opportunity Accelerated Delivery Act), also signed into law in 2025, imposed defined response windows on residential building permits across Nevada jurisdictions. For Henderson homeowners, that means more predictable permit timelines — but only if the application is clean on the first submission. Kingdom & Co. prepares complete permit packages designed to minimize revision cycles.
Size limits
Each Henderson property has its own buildable envelope determined by the lot’s zoning classification, required setbacks, and lot coverage rules. Kingdom & Co. evaluates your site’s specific allowances during the consultation phase and designs your casita or addition to fit within them.
HOA approval
Guard-gated and master-planned communities in Henderson add a second layer of review. MacDonald Highlands and Anthem Country Club maintain Architectural Review Committees with detailed standards for additions and detached structures. Seven Hills, Inspirada, Cadence, and Lake Las Vegas each enforce association-level design guidelines. Kingdom & Co. prepares the full HOA application — architectural renderings, material specifications, elevations, and site plans — during the design phase, so approvals are secured before construction begins.
Permitting timeline
All Henderson casita and addition work requires permits issued directly through the City of Henderson Building & Fire Safety Department. Plan review timelines vary by project complexity; revisions typically add 10+ days each. Kingdom & Co. manages the entire permitting process from application through final inspection.
Our Three-Phase Process
Phase 1: Consultation (complimentary)
On-site visit to your Henderson property. We assess your home’s structural system, the lot’s buildable area, and any HOA or zoning constraints specific to your community. From that, we develop a concept that adds the square footage you need while respecting your home’s architecture and your neighborhood’s standards. Typical duration: 1-2 weeks.
PHASE 2: DESIGN
Schematic design, material selections, fixture specifications, and 3D renderings. Our in-house designers and builders collaborate from day one. Design decisions are vetted for constructability and cost before they’re presented to you. Typical duration: 3-5 months for a casita; 2-4 months for an addition.
PHASE 3: CONSTRUCTION
City of Henderson permitting, HOA submission, site preparation, foundation, framing, MEP installation, finishes, and final walkthrough. Self-performing crews on finish carpentry and plumbing; preferred vendors on cabinetry, tile, and specialty fabrication. Typical duration: 6-12 months depending on scope.
Ready to start your Henderson casita or addition?
Schedule a complimentary in-home consultation. We’ll walk your lot with you, discuss your goals and your HOA’s constraints, and develop a realistic budget and timeline for your specific project.
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Our Henderson office: 1489 W Warm Springs Rd, Ste 110, Henderson, NV 89014
Home Addition Henderson & Casita Builder — Design-Build for Henderson Homeowners
- Design-build integration. Design, interior design, estimating, procurement, and construction all under one roof — no handoffs, no scope gaps, no “that’s not what we drew” conversations mid-build.
- Henderson office on Warm Springs Road. Local team, local permitting experience, local HOA relationships. Our Henderson office is located at 1489 W Warm Springs Rd, Suite 110, Henderson, NV 89014.
- NARI Remodeler of the Year 2025 and 2026 Regional Winner. Back-to-back national-level industry recognition.
- Unlimited monetary limit license. State-approved to take on casita, ADU, and addition projects of any size — a credential most Las Vegas Valley builders don’t carry.
- Transparent, line-item pricing. Full estimate during design, before any construction contract is signed.
- BBB A+ rating held since 2018.
Frequently Asked Questions
Kingdom & Co. builds casitas and home additions throughout Henderson, including MacDonald Highlands, Green Valley Ranch, Lake Las Vegas, Anthem, Seven Hills, Inspirada, Cadence, and surrounding communities. Our Henderson office is located on Warm Springs Road, and our portfolio includes completed projects across multiple Henderson neighborhoods.
Timeline varies by scope and the HOA approval process in your community. A single-room addition typically takes several months from design through completion. Larger additions and detached casitas requiring new foundations, utility connections, and roofing extend that timeline. Henderson’s permitting and inspection schedule also factors in. Kingdom & Co. provides a detailed project timeline during the design phase.
It depends on your lot size, setback requirements, and lot coverage limits under Henderson’s zoning code and your HOA guidelines. Larger lots in communities like MacDonald Highlands, Anthem, and Seven Hills are more likely to accommodate a detached casita. Smaller lots in newer developments like Inspirada or Cadence may have tighter constraints. Kingdom & Co. evaluates your lot’s buildable area and zoning restrictions during the initial site visit.
A casita is a detached, freestanding structure with its own entrance — typically including a bedroom, bathroom, and sometimes a kitchen. It functions as an independent living space. A room addition is attached to the existing home, expanding the footprint with new bedrooms, living areas, or primary suites. Both require City of Henderson permits and, in most communities, HOA approval. Kingdom & Co. designs and builds both types throughout Henderson.
In most Henderson communities, yes. Guard-gated neighborhoods like MacDonald Highlands and Anthem Country Club maintain architectural review committees with strict standards for additions and detached structures. Master-planned communities like Seven Hills, Inspirada, and Cadence also enforce association-level design guidelines. Kingdom & Co. prepares and submits the full HOA application, including architectural renderings and material specifications, during the design phase.
Yes. Henderson operates its own building department, separate from the City of Las Vegas. Casitas, room additions, and any construction that adds square footage require permits issued through the City of Henderson Community Development Department. The permit process covers foundation, framing, electrical, plumbing, and mechanical work. Kingdom & Co. handles the full Henderson permitting process as part of every addition project.
