Custom Casitas, ADUs, and Home Additions in Henderson, NV
Designed, permitted, and built by Kingdom & Co. — the only Henderson design-build firm with 2x back-to-back NARI Contractor of the Year awards, featured on 8 episodes of HGTV’s Property Brothers.
Free in-home casita and addition consultation for Henderson homeowners.
Harmoni Cove, Green Valley
We Have Been Recognized By:
What We Build In Henderson
Detached Casitas
Standalone guest houses with private entrances, bedrooms, bathrooms, and kitchens. Common on lots in MacDonald Highlands, Anthem, and Seven Hills where setbacks 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.
In-Law Suites
Connected or detached accessory dwellings designed for multigenerational living. Built to FHA accessibility standards 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 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 and Cadence where homeowners need space without relocating.
Second-Story Additions
Adding partial or full upper levels to single-story homes. Henderson’s master-planned communities include many single-story floor plans where vertical expansion is the most practical path.
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, and the broader Henderson area — fully permitted through the City of Henderson Building Department, designed to comply with HOA architectural review committees, and built to the same standard as the main residence.
Henderson Casita and Addition Costs (2026 Estimates)
Custom casita construction in the Las Vegas Valley currently ranges from approximately $250 per square foot at the entry level to $500 per square foot or more for luxury-finish builds (Picasa Homes industry data, 2025). For a typical 1,200-square-foot detached casita built to luxury standards, total project cost typically falls between $400,000 and $600,000+, including design, permits, site work, and finishes.
- 500 sq ft casita: $150,000 – $300,000
- 800 sq ft casita: $240,000 – $480,000
- 1,200 sq ft casita (Henderson max for detached ADU): $360,000 – $720,000
- Room addition (per sq ft of added space): $300 – $500
- Second-story addition (per sq ft of added space): $400 – $700
Final pricing depends on lot conditions, finish level, HOA requirements, and design complexity. Every Kingdom & Co. project starts with a free in-home consultation where we develop a realistic budget range for your specific scope and lot before any design work begins.
What Henderson Homeowners Need to Know About Casita and ADU Rules
Size limits
Each Henderson property has its own buildable envelope determined by the lot’s zoning classification (RS-1, RS-2, RS-4, or RS-6), 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, and Cadence each enforce association-level design guidelines. Kingdom & Co. prepares the full HOA application — including architectural renderings and material specifications — 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, with revisions typically requiring 10 additional days each. Kingdom & Co. manages the entire permitting process from application through final inspection.
Our Three-Phase Process
Phase 1: Consultation (free)
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 free in-home consultation. We’ll walk you through your lot, your goals, and a realistic budget and timeline for your specific project.
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.
