Home Addition Summerlin & Casita Builder — Design-Build in Las Vegas
A Summerlin home addition is one of the most effective ways to gain square footage without leaving a neighborhood you already love. Whether the goal is a detached casita for guests or extended family, a primary suite addition, an attached home office, or a full second-story build, the project requires a team that can design the addition to complement the existing architecture and navigate Summerlin’s community association guidelines from the start.
Kingdom & Co. is a design-build firm with an office on Alta Drive in Summerlin. We handle every phase of a home addition Summerlin homeowners need — from architectural design and HOA submittal through permitting, construction, and final finishes — as a single coordinated team.
Why Kingdom & Co. for Your Home Addition Summerlin Homeowners Trust
Adding square footage to a Summerlin home isn’t a simple construction project — it’s an architectural undertaking that must align with the existing home’s roofline, materials, and design language while satisfying Summerlin’s community association standards. Kingdom & Co.’s design-build model is purpose-built for this kind of work: our architects design the addition while our builders plan the construction simultaneously, eliminating the gap between what gets drawn and what gets built.
Our credentials speak to the caliber of that work: 2x NARI Remodeler of the Year regional winner, featured across eight episodes of HGTV’s Property Brothers, and listed in the Architectural Digest AD PRO Directory three consecutive years. We are members of the Southern Nevada Home Builders Association and the National Association of the Remodeling Industry.
Casita and Addition Projects in Summerlin
Our portfolio includes casitas, guest houses, and home additions across Summerlin and the wider Las Vegas Valley. These projects range from detached casitas with full kitchens and bathrooms — designed as self-contained living spaces — to attached room additions that expand a home’s footprint without altering its street-facing architecture.
Browse the projects below to see how we approach design-build additions, then schedule a consultation to discuss your home addition in Summerlin — whether it’s a standalone casita, a primary suite expansion, or a multi-room build.
Types of Home Additions We Build in Summerlin
Every home addition Summerlin homeowners consider starts with the same question: what does the homeowner need that the current floor plan doesn’t provide? The answer shapes the scope. Kingdom & Co. designs and builds:
- Detached casitas — freestanding guest houses with bedrooms, bathrooms, kitchenettes or full kitchens, and private entrances. Ideal for visiting family, multigenerational living, or rental income.
- Room additions — expanding the home’s footprint with new bedrooms, primary suites, home offices, or living areas attached to the existing structure.
- Second-story additions — adding a full or partial upper level to single-story homes, common in older Summerlin villages where lot coverage limits ground-level expansion.
- Garage conversions — transforming underused garage space into livable square footage, including home gyms, studios, or accessory dwelling units.
- Outdoor living structures — covered pavilions, pool houses, and outdoor kitchens that extend the home’s livable area into the yard.
Each project is designed to match the existing home’s architectural character — materials, roofline, window proportions, and finish quality are coordinated so the addition reads as original, not afterthought.
Permitting and HOA Approval for Additions in Summerlin
Building a home addition Summerlin requires navigating two approval tracks: city permitting and HOA architectural review. Most of Summerlin falls within the City of Las Vegas, where building permits for additions are issued through the Development Services Center. Additions involving new foundations, roofing, electrical, and plumbing all require permits before construction begins.
Summerlin’s three community associations — North, South, and West — each enforce architectural guidelines that govern additions. Guard-gated communities like The Ridges and Red Rock Country Club have additional design review layers. For casitas and detached structures, setback requirements, lot coverage limits, and height restrictions all factor into the design. Kingdom & Co. prepares the full HOA application — including architectural renderings and material specifications — during the design phase, so approvals are secured before breaking ground.
Start Your Home Addition Summerlin Project
The first step is a site visit. For additions and casitas, the on-site consultation is essential — we assess the existing home’s structure, the lot’s buildable area, and any HOA or zoning constraints that will shape the design. From there, our team develops a concept that expands your home’s square footage while respecting its architectural identity and your community’s standards.
Visit our casitas and additions portfolio for completed projects across the valley, or explore our Summerlin remodeling page to see the full range of work we do in the area. Then reach out to schedule your home addition Summerlin consultation.
Frequently Asked Questions
Yes. Casitas, room additions, and any construction that adds square footage to your property require building permits from the City of Las Vegas Development Services Center. The permit process covers foundation, framing, electrical, plumbing, and mechanical work. Kingdom & Co. handles the full permitting process as part of every addition project.
In most cases, yes. Summerlin’s three community associations — North, South, and West — require architectural review for additions, casitas, and detached structures. Guard-gated communities like The Ridges and Red Rock Country Club have additional review standards. Kingdom & Co. prepares and submits the full HOA application, including architectural renderings and material specifications, during the design phase.
A casita is a detached, standalone structure — typically a guest house with its own entrance, bedroom, bathroom, and sometimes a kitchen. A room addition is attached to the existing home, expanding its footprint with new bedrooms, living areas, or primary suites. Both require permits and HOA approval in Summerlin. Kingdom & Co. designs and builds both types.
It depends on your lot size, setback requirements, and lot coverage limits set by both the City of Las Vegas zoning code and your HOA. Larger lots in communities like The Ridges, Tournament Hills, and The Paseos are more likely to accommodate a detached casita. Kingdom & Co. evaluates buildable area and zoning constraints during the initial consultation.
Timeline depends on the scope of the addition and the HOA approval process. A single-room addition typically takes several months from design through completion. Larger additions and detached casitas that require new foundations, utilities, and roofing extend that timeline. HOA architectural review adds lead time at the front end. Kingdom & Co. provides a detailed project timeline during the design phase.
Kingdom & Co. builds casitas and home additions throughout Summerlin, including The Ridges, Summerlin South, The Willows, The Paseos, The Arbors, Tournament Hills, Red Rock Country Club, Country Club Hills, and Sun City Summerlin. Our Summerlin office is located on Alta Drive.
