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Serving Westminster, CA and surrounding areas. (657) 364-0879
Stop putting off the room you actually want. We design and build custom sunrooms that fit your Westminster home, handle every permit, and stay comfortable even on the hottest afternoons.
Custom sunrooms in Westminster are fully enclosed room additions with insulated walls, real windows, and a proper roof - most projects run 8 to 16 weeks from signing to a finished room you can walk into every day.
A lot of Westminster homeowners reach this point after years of watching a backyard patio sit empty because the afternoon sun makes it too hot to use. A custom sunroom solves that for good - you get natural light and an outdoor view without the heat, the bugs, or the Santa Ana dust. It works as a sitting room, a home office, or a plant room, and it genuinely feels like part of the house rather than something bolted on afterward.
If you have an existing patio cover that is starting to show its age, our sunroom construction service can replace it with something permanent and fully permitted. For homeowners who want to guide every design decision themselves, a custom build is the right path.
If your backyard patio sits unused because the afternoon sun makes it unbearable, that is the clearest sign you need an enclosed solution. Westminster's south- and west-facing patios can reach temperatures that make outdoor time impractical for much of the year. A custom sunroom with heat-control glass fixes that problem at the source.
When your living room feels cramped or you need a dedicated spot for a home office or hobby room, a custom sunroom is often faster and less expensive than a traditional room addition. It adds real square footage without the full structural complexity of pushing into a load-bearing wall. Many Westminster homeowners reach this point when the house starts to feel smaller than their needs.
Water stains on the ceiling, bent framing, or screens that have pulled away are signs your current patio cover has reached the end of its useful life. Westminster's Santa Ana winds are particularly hard on lightweight structures, so deterioration often happens faster here than homeowners expect. Replacing it with a properly built custom sunroom gives you a permanent, weather-tight room instead of a patched-together cover.
In Orange County's real estate market, a permitted custom sunroom adds usable square footage and a feature that photographs well. The key word is permitted - an unpermitted addition can hurt your sale, while a legal, well-built room shows up correctly at appraisal and gives buyers a reason to choose your home over the next one on the block.
Every custom sunroom we build starts with a site visit where we look at your specific space, the orientation of your home, and the condition of the wall the sunroom will attach to. From there, we work through the design together - choosing the right glass for Westminster's sun exposure, selecting a foundation approach that fits your yard, and making sure the finished room matches the proportions and style of your existing home. For homeowners who want to go further with the design process, our sunroom design service covers the full design consultation before any permits are pulled.
We handle all permit submissions with Westminster's Building and Safety Division and schedule every required city inspection. If your yard has older stucco or a concrete slab that needs prep work, we address that as part of the project rather than as a surprise cost at the end. The result is a finished room that is fully permitted, properly sealed against Westminster's weather, and engineered to stay solid through Santa Ana wind events. Homeowners who want something more tailored than a standard sunroom kit but are open to a slightly different approach might also look at our sunroom construction options.
Best for homeowners who want every detail - size, glass type, foundation, and finishes - chosen specifically for their home and how they plan to use the room.
For homeowners who want to get the design right before committing to a build, this service covers glass selection, layout, and permit-ready drawings.
Ideal for homeowners who want one point of contact handling everything - design, permits, inspections, and construction - from first call to final walkthrough.
Suited to Westminster homes where an existing aluminum cover or screen enclosure has reached the end of its life and needs to be replaced with a real, enclosed room.
Westminster gets roughly 280 sunny days a year, which sounds ideal for outdoor living until you realize that south- and west-facing patios become unusable for much of the afternoon in summer. Custom sunrooms built with low-emissivity glass solve this by letting in natural light while blocking the solar heat that makes an ordinary patio uncomfortable. The city also sits close enough to the Pacific Ocean that marine-layer moisture and Santa Ana wind events are part of everyday life, and a properly engineered sunroom handles both without deteriorating the way a lightweight patio cover does. Homeowners in Fountain Valley and Huntington Beach deal with the same coastal conditions, and the same design principles apply.
A large share of Westminster's housing stock was built between the 1950s and the 1970s, which means most homes have stucco exteriors and concrete slab foundations. Attaching a custom sunroom to a stucco wall requires specific flashing and waterproofing work to prevent moisture from getting behind the existing siding - something a contractor with genuine experience in Westminster will know how to handle without being told. The City of Westminster also requires a full permit for any room addition, which means your project goes through plan review and city inspections before and during construction. That process takes time, but it also means your addition is documented, legal, and adds real value to your home.
We respond within 1 business day and schedule a free in-home visit. There is no commitment required - just a conversation about your space and what you want the room to do.
We visit your home, look at the space where the sunroom will go, and take measurements. You receive a detailed written proposal covering size, glass type, foundation approach, and total cost - no vague phone estimates.
Once you sign, we submit plans to Westminster's Building and Safety Division. Permit review typically takes several weeks. During that time, your custom materials are being fabricated off-site so the build phase moves quickly once we have approval.
Construction runs 1 to 3 weeks on-site for most projects. City inspectors visit at required checkpoints. When the work is done, we walk you through the finished room and hand you all permit documentation.
Free in-home estimate. Detailed written proposal. No pressure, no surprises.
(657) 364-0879We spec low-emissivity glass on every Westminster project because Westminster's sun demands it. A sunroom without proper heat management becomes unusable by mid-morning in summer - that is not a room, it is a problem. Our default glass selection keeps your room comfortable without running the air conditioner constantly.
We manage the entire permit process with Westminster's Building and Safety Division, from plan submission to final inspection sign-off. You receive a copy of your completed permit when the project is done, which protects you at resale and with your insurance carrier. We do not suggest skipping permits to save time.
Most Westminster homes have older stucco exteriors, and connecting a sunroom to stucco requires specific flashing and waterproofing work that a general contractor unfamiliar with this housing stock may not know. We have built on these homes before and we treat the connection point as a priority, not an afterthought. See the{" "}California Contractors State License Board at{" "}cslb.ca.gov{" "}to verify any contractor you consider.
You get a detailed written proposal before we ask for a deposit, and the price does not change unless you change the scope. Westminster homeowners tell us that budget anxiety is the main reason they put this project off for years. A fixed written price lets you plan with confidence.
Taken together, these four things - correct glass, permit compliance, proper stucco attachment, and a fixed written price - are what separate a custom sunroom that adds lasting value from one that creates problems down the road. We stand behind every project we build in Westminster.
Full structural builds from foundation to finished room, for Westminster homeowners replacing an old patio cover or starting from scratch.
Learn MoreDesign consultation and permit-ready drawings before you commit to a build - useful when you want to get the details right first.
Learn MorePermit slots fill up - the sooner we submit your plans to Westminster's Building and Safety Division, the sooner you are enjoying your new room. Call or get a free estimate now.