Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Window Company in Fullerton, CA
We’re Westlight Windows & Doors, an independently owned and operated Kingswell location, and we replace and install windows and doors across Fullerton. Most Fullerton jobs run $850-$2,800 per opening depending on whether we’re matching a 1920s Craftsman wood sash or swapping a 1960s aluminum slider. The city’s housing stock is old enough that glass, frame material, and local permit realities drive every quote. Call (903) 354-7134 and we’ll give you a written price before any work starts, no exceptions.
Why Fullerton Homes Are Different
Fullerton grew fast during the citrus boom years between 1910 and 1940, and that left the city with thousands of Craftsman bungalows, Spanish Colonial Revival homes, and Period Revival cottages. Many of those original single-pane wood sashes are now 70 to 100 years old. We routinely see glazing compound crumbling out of the rabbets and sill joints rotted through at the bottom corners, especially in the tree-shaded blocks north of Chapman Avenue and around the historic neighborhoods near downtown.
The post-war tracts from the 1950s and 1960s added a second wave of original aluminum single-pane sliders that are now far past their service life. Those frames bend, the rollers wear flat, and the seals fail. Fullerton also sits far enough inland that the coastal marine layer only takes the edge off summer heat, and Santa Ana winds channel through the Puente Hills gaps and pressure-test door thresholds and window weatherstripping all winter. A Low-E dual-pane upgrade here is a real utility-bill decision, not a luxury upsell.
The other thing that makes Fullerton different is the city’s Historic Resources Survey. Before quoting a vinyl replacement window on any pre-1945 home near downtown, a contractor has to check whether the property is on that list. Even without formal landmark designation, a surveyed property can get flagged during permit review and pushed into design review. That changes the product spec and the timeline. We check before we quote.
Our Main Fullerton Services
Most Fullerton homeowners call us first about window replacement and door installation, but all three of our main services have their own pages with local pricing and details.
Window Replacement in Fullerton
This is the job where Fullerton’s housing stock matters most. A standard vinyl replacement works fine on a 1960s ranch in the flatlands, but a 1920s bungalow on a Mills Act property usually needs a wood or aluminum-clad frame matched to the original profile. We carry eight manufacturer lines so we can match the right product to the house instead of forcing the house to fit one brand. The details are on our Window Replacement in Fullerton page, including what Low-E glass actually does for a full afternoon of direct sun.

Window Installation in Fullerton
Window installation in Fullerton often means new construction flanges or retrofit work on houses where the rough opening has shifted over 70 or 80 years. Fullerton’s clay soil moves with the seasons, and we regularly find openings that are no longer square by half an inch or more. That’s not a problem; it’s just a fact of working on houses this old. Our Window Installation in Fullerton page covers how we handle out-of-square openings, flashing details, and what a written arrival window actually means.

Door Installation in Fullerton
Fullerton’s Santa Ana winds find every gap in an exterior door seal. A front door that swings closed on its own or lets a visible line of light through one edge is costing you money every windy week of the year. We install Therma-Tru entry doors and work with interior passage and patio door lines as needed, and every door job gets the same written price before work starts and the same written guarantee at the end. See Door Installation in Fullerton for what a door replacement involves on a typical Fullerton home.

What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Brands We Service in Fullerton
Westlight carries and installs eight manufacturer lines, including CGI and CWS impact-rated products, ES Windows for high-end aluminum, and ECO Window Systems for tight-budget energy retrofits. Ordering is direct; there is no middleman delay. See our brands page for the full list and what each line is best for.
Pricing for Window Company in Fullerton, CA
| Service | Typical range in Fullerton |
|---|---|
| Single window replacement | $850 - $1,400 installed |
| Double window replacement | $1,700 - $2,800 installed |
| Sliding patio door replacement | $2,500 - $4,200 installed |
| French door replacement | $3,000 - $5,500 installed |
| Front entry door replacement | $2,200 - $4,000 installed |
| Wood window replacement (historic profile match) | $1,500 - $3,200 installed |
| Aluminum-clad window replacement | $1,200 - $2,400 installed |
| Full-house window replacement (8-12 openings) | $7,500 - $16,000 installed |
Historic-profile wood and aluminum-clad windows push Fullerton prices toward the upper end of these ranges because the frames are built to match the original sightlines, not pulled from a standard vinyl catalog. Every quote is written before we start, and we do not revise the price at the door.
Neighborhoods We Serve in Fullerton
We work all over Fullerton, from the historic bungalow districts near downtown to the mid-century tracts and the newer hillside homes. Scheduling varies by part of town, but we generally reach most Fullerton neighborhoods within a day or two for an estimate.
- Downtown Fullerton and the Historic District
- Sunny Hills
- Raymond Hills
- Amerige Heights
- Norton Younglove
Service Area – Cities Near Fullerton
Westlight serves Fullerton and the surrounding North Orange County communities. If you’re in a neighboring city, we cover those too: Placentia, CA, Brea, CA, Yorba Linda, CA, and La Habra, CA. Scheduling and dispatch are coordinated from our Los Angeles office, with crews serving Fullerton locally.
Serving Fullerton, CA - Our Local Coverage Area
We’re based in the Fullerton area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About Window Company in Fullerton
Yes. We cover the entire city, including the historic districts near downtown, Sunny Hills, Raymond Hills, Amerige Heights, and the flatland tracts east and west. If you own a home in Fullerton, we can quote it. Call (903) 354-7134 and a live person picks up, day or night.
Many do not, but any home on the city’s Historic Resources Survey or under a Mills Act contract can trigger design review. We check before we quote, and we pull permits and pass inspections on every job that requires them. That’s part of the Kingswell Guarantee.
Most Fullerton neighborhoods get an estimate visit within a day or two of your call. We schedule a real arrival window in writing, and our technicians are background-checked and in uniform. Call (903) 354-7134 for the next available estimate slot.
Ready for a written price on your Fullerton windows or doors? Call Westlight Windows & Doors at (903) 354-7134 and we’ll schedule your free estimate.
What happens when you call
- 1A real person answersNo phone trees - talk to a local windows & doors pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3We come out and measureLicensed & insured, at a time that suits you - the visit and the quote are both free.
- 4You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.
What Fullerton Customers Say
"Our energy bill in summer was brutal. New windows made a real dent in it. Salesman wasn't pushy and didn't do the fake "today only" discount thing the others tried."
- Bethany Oh"Two bedroom windows that never opened and one that wouldn't stay up. All replaced in an afternoon. The crew was clean, hauled off the old frames, and the quote held."
- Colette Rhee"Got quotes from three companies. Westlight wasn't the cheapest but they were the only one who measured everything carefully and put it all in writing. Worth it. No surprises on install day."
- Craig Dillard










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