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Serving Fullerton, CA and surrounding areas. (657) 354-1477
Custom Fullerton Sunrooms builds sunroom additions, four season sunrooms, and patio enclosures for Fullerton homeowners. Serving the city since 2017, fully permitted, free estimates within one business day.
Fullerton homes, especially those built in the 1950s through 1970s, often have underused backyards that a sunroom addition can transform into year-round living space. We design every addition with Fullerton's intense afternoon sun in mind so the room stays comfortable through summer without constant air conditioning.
Fullerton winters are mild but January nights can dip into the 40s, and a four season sunroom with full insulation and climate control means you never lose use of the space. These rooms are built to handle both the cold nights and the intense summer heat that Fullerton gets for months at a time.
For Fullerton homeowners who primarily want to enjoy their outdoor space from spring through fall, a three season room offers more enclosure than a patio cover at a lower cost than a fully insulated addition. It keeps insects, wind, and Fullerton's Santa Ana gusts out while letting fresh air in.
Older Fullerton homes often have uncovered concrete slabs or aging patio covers out back. Enclosing that space adds a usable room without the complexity of a full addition, and in this city's climate, even a modest enclosure extends the time you can comfortably spend outside by months.
Fullerton evenings bring insects that make sitting outside less enjoyable than it should be. A screen room keeps pests out while letting breezes through, and it works well with Fullerton's consistent evening temperatures that make outdoor living genuinely comfortable most of the year.
Fullerton has a wide range of home styles, from Craftsman bungalows near downtown to postwar ranch homes on the east side of the city. A custom sunroom is designed to fit the specific footprint, roofline, and aesthetic of your particular home rather than using an off-the-shelf kit that may not match.
Fullerton gets over 280 sunny days a year, which sounds like a good thing until you realize that a sunroom built with the wrong glass will be an oven by noon from May through September. Managing heat gain is not optional here. A room designed without considering sun orientation and glass performance will sit unused for the hottest months, which is most of the year. That means every sunroom we plan for a Fullerton home starts with a conversation about how the sun hits that specific lot.
Fullerton's housing stock adds another layer of complexity. A large share of homes here were built between the 1920s and the 1970s, which means aging concrete slabs, older electrical panels, and foundations that have had decades to settle. The clay-heavy soils common in this part of Orange County expand when wet and shrink when dry, cycling with every rainy season. A sunroom built without addressing those soil conditions can develop cracking walls and sticking doors within a few years. Contractors who have not worked on Fullerton's older homes before often miss these issues until they become expensive problems mid-project.
Our crew has been working in Fullerton since 2017, pulling permits regularly from the City of Fullerton Building Division and handling the HOA architectural review process that applies to communities like Amerige Heights before a single permit application goes in. We understand how Fullerton's plan check process works and what the city's inspectors look for at each stage of a sunroom project.
We work on homes throughout Fullerton, from the historic Craftsman bungalows near Downtown Fullerton and the older ranch houses off Harbor Boulevard to the newer properties in neighborhoods closer to the hills in the north part of the city. The Fullerton Arboretum and Cal State Fullerton anchor the middle of the city, and the residential neighborhoods surrounding them are where we do a significant share of our work. We are also regularly called into Placentia just to the east, and we know the sunroom needs those homes have as well.
Tell us what you want to build, how you plan to use the room, and your rough timeline. We will ask about your HOA status and existing slab before we visit, so we come prepared and do not waste your time on site.
We measure the space, check your existing foundation or slab, assess sun orientation, and review your electrical panel. You receive a detailed written estimate with no pressure to sign. This is also when we flag any HOA requirements specific to your neighborhood.
If your community has an HOA, we submit the design for architectural review first. Once that clears, we file with the City of Fullerton Building Division. Plan check typically runs several weeks, and we keep you updated throughout so there are no surprises.
Work begins once the permit is issued. City inspectors visit at required checkpoints. When the room is finished, we walk you through it, explain any systems installed, and hand you copies of the final inspection sign-off. Keep those documents for when you sell.
We serve all of Fullerton, CA. Free estimates within one business day. No pressure, no commitment.
(657) 354-1477Fullerton is a city of about 140,000 residents in northern Orange County, covering roughly 22 square miles of fully built-out urban and suburban neighborhoods. The city is known for its well-preserved historic downtown, centered on Harbor Boulevard and Commonwealth Avenue, where 1920s and 1930s brick storefronts still line the streets. Residential neighborhoods near downtown feature Craftsman bungalows and Spanish Colonial Revival homes, many of which are 80 to 100 years old. Further east, large tracts of postwar ranch homes built between the 1950s and 1970s make up the bulk of Fullerton's single-family housing stock. According to the U.S. Census Bureau, median home values in Fullerton are well above the national average, reflecting the strong demand for housing in this part of Orange County.
Cal State Fullerton sits near the center of the city and brings over 40,000 students and a large staff population, shaping the character of the surrounding neighborhoods. The Fullerton Arboretum on the CSUF campus is one of the largest botanical gardens in Southern California. Neighboring Anaheim borders Fullerton to the south and east, and many Fullerton homeowners have referred us to neighbors there. Whether your home is in the historic Craftsman blocks near the Fullerton Heritage district or on a ranch street closer to the hills, we know what the local housing stock looks like and what it takes to build a sunroom that fits.
Keep bugs out while enjoying fresh air with a screened outdoor room.
Learn MoreConvert your existing patio into a fully enclosed sunroom space.
Learn MoreTurn your underused deck into a comfortable, weather-protected sunroom.
Learn MoreProtect your patio from the elements with a durable cover structure.
Learn MoreCall or submit a form and we will respond within one business day. Sunroom projects book fast in spring and fall, so now is a good time to get on the schedule.