Sunrooms & Patio Rooms in Fullerton, CA
Premium Sunroom Construction designs and installs custom sunrooms and patio rooms for Fullerton homeowners — from the craftsman streets near downtown to the hillside lots of Sunny Hills and Raymond Hills. Our showroom is right next door in Buena Park, and your in-home design quote is free.
Outdoor Living Spaces
YOUR LOCAL SUNROOM CONTRACTOR
Trusted Sunroom & Patio Room Contractor Serving Fullerton Homes
Fullerton's older neighborhoods come with something money can't buy in a new tract: mature trees, established streets, and homes with real character. The tradeoff is shade — those beautiful canopies can leave your house darker than you'd like, and your patio buried in leaves every fall. A glass sunroom flips that equation: it pulls in light from every direction and the roof is engineered to take what the trees drop on it.
We're a concept-to-completion contractor based practically next door — our Buena Park showroom borders Fullerton. A design consultant comes to you for a free in-home quote, we evaluate your slab and lot (including the sloped properties common in Sunny Hills and Raymond Hills), handle engineering and City of Fullerton permits, and install with factory-trained crews. Rooms are designed to complement older homes, not fight them.
- Licensed, bonded & insured California contractor
- Authorized dealer: Four Seasons, C-Thru & Duralum product lines
- All three product lines are manufactured right here in California
- City permits, engineering & inspections handled for you
- Free in-home design consultations — 7 days a week
WHAT WE BUILD
Custom Sunrooms & Patio Enclosures in Fullerton
From a light-filled glass room under the oaks to a sturdy patio cover that shrugs off falling leaves — we design and build it for your lot.
Four-Season Sunrooms
Fully insulated glass rooms with CONSERVAGLASS NXT glazing — they gather daylight even in tree-shaded yards while blocking up to 85% of solar heat in summer.
Three-Season Patio Rooms
Enclose your existing covered patio into a real room — the most cost-effective way to add living space to an established Fullerton home.
Solid-Roof Patio Enclosures
Insulated EPS roof panels with C-Thru Alpha and Omega wall systems — quiet under rain and falling acorns, cool in the summer.
Screen Rooms
DuraScreen enclosures for evenings on the patio without mosquitoes — and without sweeping leaves off the furniture every morning.
Aluminum Patio Covers
Duralum Weatherwood solid and lattice covers in 8 woodgrain colors that suit craftsman and ranch homes — engineered to 130 MPH wind and Seismic D standards.
Conversions & Upgrades
Convert an aging patio cover into a full patio room, or refresh an older enclosure with new glass, doors, screens, and electrical.
WHY HOMEOWNERS HIRE US IN FULLERTON
We Know Fullerton Homes
Hillside lots, mature landscaping, and houses with history — Fullerton projects reward a contractor who measures twice. That's us.
Fullerton Permit Experience
We handle plan submittals, building permits, and inspections with the City of Fullerton start to finish — including the extra documentation older structures sometimes need.
Hillside & Older-Lot Engineering
Sunny Hills and Raymond Hills lots slope; pre-war and mid-century slabs vary. We evaluate footings and grade at your free site check and engineer the room to match — no surprises mid-project.
Light Where the Trees Allow
Mature canopies are why you bought here. Our glass roof panels and full-height window walls are positioned to harvest the light that gets through — without cutting a single branch.
California-Made, Next Door
C-Thru builds in Riverside, Duralum in Sacramento, Four Seasons manufactures in California — and our Buena Park showroom sits on Fullerton's doorstep. See full-size rooms before you decide.
OUR PROCESS
From Free Quote to Finished Room
A clear, simple process with one point of contact from your first call to your final city inspection.
Free In-Home Consultation
A design consultant visits your Fullerton home, measures the patio, reads the light and grade on your lot, and gives honest feedback on what's possible — no pressure, no obligation.
Design & Product Selection
Choose your product line — Four Seasons, C-Thru, or Duralum — plus glass, frame finishes, and doors that suit your home's era. You get a firm, line-item quote.
Site Check, Engineering & Permits
We verify your slab, footings, and grade, then handle engineering and City of Fullerton permitting in-house.
Professional Installation
Factory-trained crews install your pre-engineered room — typically days to a few weeks on site, with most projects finishing within a few months of signing.
Final Inspection & Warranty
We coordinate the final city inspection, walk you through the finished room, and register your transferable lifetime manufacturer warranty.
FULLERTON SUNROOM FAQs
Common Questions From Fullerton Homeowners
Most Fullerton projects run between $15,000 and $70,000+. A three-season patio room on an existing slab starts around $15,000-$25,000; a fully insulated four-season sunroom with premium glass runs $30,000-$70,000+. Hillside lots can add engineering scope, which is exactly why we quote from a free in-home visit instead of over the phone — you get real, line-item numbers for your actual lot.
Often more so. A conventional room with a couple of windows stays dark under a canopy — a sunroom with a glass roof and full-height window walls collects light from every direction, so even filtered shade keeps the room bright. We position the room and glazing around your trees at the design stage, and no, you won't need to cut them down.
Yes — the City of Fullerton requires building permits for sunrooms, patio rooms, and most patio covers. We handle engineering, plan submittals, permits, and all inspections for you, start to finish.
Yes. Sunny Hills, Raymond Hills, and the neighborhoods above Bastanchury have plenty of grade, and we've engineered rooms for lots like these for decades. The free site check tells us what your slab and footings need, and it's all priced into your line-item quote before you sign.
A patio room (or patio enclosure) is usually built on your existing patio slab for three-season use. A four-season sunroom is fully insulated and can tie into your home's heating and cooling for year-round comfort. We build both and we'll recommend the right fit at your free quote.
We're an authorized dealer for Four Seasons Sunrooms (CONSERVAGLASS NXT glazing), C-Thru Sunrooms (manufactured in Riverside, CA), and Duralum (Sacramento, CA). All three lines are California-made and carry transferable lifetime warranties.
Our roofs are engineered structural panels, not greenhouse film. Insulated EPS solid roofs take leaf litter, acorns, and the occasional small branch without complaint, and tempered, laminated glass roof options are rated for real loads. Duralum's aluminum systems are engineered to 130 MPH wind and Seismic D — a falling leaf is not their problem.
Yes — financing options are available, and many homeowners also use home equity to fund their project. Ask your design consultant during the free in-home quote and we'll walk through the options.
SERVING SOUTHERN CALIFORNIA
Sunroom & Patio Room Builder Throughout Orange County
Beyond Fullerton, Premium Sunroom Construction installs sunrooms, patio rooms, and patio covers across Orange, Riverside, San Diego, and Los Angeles counties.
OUR QUOTE PROCESS
Schedule
Fill out a quick form or call to schedule your no-obligation quote.
Measure
One of our certified estimators will visit to measure for your project.
Quote
You'll have all the info and pricing to make an educated decision.
or call 951-634-7776
WHAT OUR CLIENTS SAY
Hear From Our Happy Customers
Real Stories, Real Transformations
Build Your Fullerton Sunroom or Patio Room
Free in-home quotes, California-made product lines, permits handled for you, and a showroom right next door in Buena Park. Let's build a room worthy of your neighborhood.