Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
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Westlight Windows & Doors is the window company Whittier homeowners call when the job has to be done right on a house that wasn’t built yesterday. Most of our work in Whittier involves older homes with settled frames, out-of-square rough openings, and single-pane windows that have been quietly leaking conditioned air for forty years. We carry eight manufacturer lines, give every customer a written price before any work starts, and back each installation with a written guarantee. Call (903) 354-7134 for a free estimate.
Why Whittier Homes Are Different
Whittier sits directly atop the Whittier Fault, and the 1987 Whittier Narrows earthquake left something behind that most people never notice until they try to replace a window or hang a door: subtly racked frames and settled foundations. In the pre-1950s neighborhoods around Uptown and Greenleaf Avenue, we routinely open up a wall and find the rough opening is a quarter-inch out of square. That means shimming, planing, and frame correction before a new unit can go in plumb. A contractor who skips that step gets callbacks within a season. We don’t skip it.
The older blocks near Greenleaf and Philadelphia Street are dense with 1920s and 1930s Craftsman bungalows and Spanish Colonial Revival homes. Many still have their original wood-frame single-pane windows set in plaster-over-wood-lath walls, which complicates flashing and nailing-fin installation. Door slabs that “just started sticking” in this part of Whittier usually haven’t warped. The foundation has settled a little more along the fault corridor since 1987, and the fix is correcting the opening, not swapping the slab. Post-war tract homes in east and south Whittier have more standardized openings, but the historic core is where the labor-intensive retrofit work concentrates.
Whittier’s position just south of the Puente Hills also shapes the work. Santa Ana wind events funnel through the local passes with more force than in flatter coastal communities, which accelerates weatherstripping wear, rattles poorly seated door thresholds, and stresses dual-pane seals. Homeowners here often underestimate how much solar heat gain and wind infiltration they actually experience compared to the coast. Low-e glass, a thin coating that reflects heat back into the room in winter and out in summer, earns its cost in Whittier faster than most people expect.
Our Main Whittier Services
Window replacement and door installation are the two jobs Whittier homeowners call us about most, but we also handle new-construction window installation for additions and remodels. Each service has its own detailed page below.
Window Replacement in Whittier
Replacing windows in Whittier means working around settled frames and older wall construction that newer tracts don’t have. We remove the old sashes, correct the rough opening so the new unit sits plumb and square, flash it properly against the plaster-and-lath walls common in the historic core, and install the replacement window with a clean interior and exterior finish. On homes where the 1987 earthquake left openings slightly out of square, the correction work is part of the job, not an unexpected add-on. See Window Replacement in Whittier for full pricing and product details.
Window Installation in Whittier
New-construction window installation in Whittier shows up on additions, garage conversions, and full remodels. The opening is fresh, but the work still has to match the surrounding house, especially on older blocks near Uptown where the existing windows are wood-framed with different trim profiles than modern units. We install eight manufacturer lines, including impact-rated PGT and CGI for homeowners who want storm protection along the foothills, and thermally broken low-e glass that handles Whittier’s wind-driven heat gain. Details on Window Installation in Whittier.
Door Installation in Whittier
Door installation in Whittier frequently involves correcting the opening before the new slab ever goes in. On older blocks near Greenleaf and Philadelphia Street, settled foundations leave door frames visibly out of square, and a new door hung in a racked frame will bind within months. We correct the rough opening, install the new door plumb and level, and adjust the threshold so it seats tightly against Whittier’s Santa Ana-driven wind. Entry doors from Therma-Tru are a common choice here. See Door Installation in Whittier for pricing and options.
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 Whittier
We install and service windows and doors from eight manufacturer lines, including impact-rated CGI, thermally broken ES Windows, and energy-efficient ECO Window Systems. Parts for common repairs are stocked locally, which keeps turnaround on warranty work short. See our brands for the full list.
Pricing for Window Company in Whittier, CA
| Service | Typical range in Whittier |
|---|---|
| Single window replacement (standard vinyl, installed) | $550-$950 |
| Single window replacement (premium vinyl or fiberglass, installed) | $850-$1,400 |
| Full-home window replacement (10-14 windows, mid-grade) | $8,500-$17,000 |
| Full-home window replacement (10-14 windows, premium) | $14,000-$24,000 |
| Retrofit window replacement (per opening, same-size swap) | $350-$750 |
| New-construction window installation (per opening) | $400-$900 |
| Standard entry door installation (slab, pre-hung) | $1,200-$2,500 |
| Premium entry door installation (fiberglass or steel, with sidelights) | $2,500-$5,500 |
| Patio sliding glass door installation | $1,800-$4,200 |
| French door installation (exterior, pair) | $2,400-$5,800 |
| Storm door installation | $350-$800 |
| Custom door installation (oversized, arched, or out-of-square opening) | $3,000-$7,000+ |
What pushes a Whittier quote toward the top of these ranges is the condition of the rough opening. On pre-1950s blocks near Uptown, out-of-square openings from decades of fault-line settling add shimming and frame-correction labor that a standard new-tract install never sees. Whatever the number, the price we hand you in writing before any work starts is the price on the final invoice. We don’t revise quotes at the door.
Neighborhoods We Serve in Whittier
Our crews work across Whittier, from the historic blocks around Uptown and Greenleaf Avenue to the post-war tracts on the east and south sides. Response time for estimates across the city is typically within one business day.
- Uptown Whittier
- Greenleaf Avenue corridor
- East Whittier
- South Whittier
- Michigan Park
Service Area – Cities Near Whittier
In addition to Whittier, we serve homeowners in the surrounding communities, including Pico Rivera, CA, South El Monte, CA, Hacienda Heights, CA, and Montebello, CA. Give us a call and we’ll confirm coverage for your street.
Serving Whittier, CA - Our Local Coverage Area
We’re based in the Whittier 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 Whittier
We typically schedule estimates in Whittier within one business day, and dispatch and scheduling are coordinated from our Los Angeles office. Installation lead times depend on the product line and whether the opening needs frame correction, which older homes near Greenleaf Avenue often do. Call (903) 354-7134 for a specific date.
Replacement windows and doors that match the existing opening size usually don’t require a permit in Whittier, but changing the size of an opening or adding a new one typically does. We can confirm what applies to your specific project during the estimate, and we handle permitting when it’s needed. Call (903) 354-7134 and we’ll walk you through it.
It might. Homes near the fault trace, especially pre-1950s construction around Uptown, often have settled frames and out-of-square openings that add correction labor to a straightforward replacement. We identify any of that during the estimate, include it in the written price, and don’t surprise you with a revised invoice later. Call (903) 354-7134 for a 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 Whittier 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