Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
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AfterWindow Company in Sunnyvale, CA
Window and door work in Sunnyvale comes down to one thing most other Bay Area cities don’t deal with at the same scale: Eichler homes and their floor-to-ceiling glass walls. Those 1950s and 1960s post-and-beam houses have window bays that carry roof load, so a wrong-sized unit isn’t just a bad fit, it’s a structural problem. Add in marine-layer air that pits bare aluminum faster than inland, and Sunnyvale jobs demand a window company that knows the difference between a standard swap and a custom-width replacement. We’re Westlight Windows & Doors, and that’s exactly the work we do. Call (903) 354-7134 for a free estimate.
Why Sunnyvale Homes Are Different
Sunnyvale’s residential core was built fast, between the 1950s and 1970s, and it shows in the window openings. The Eichler tracts scattered through neighborhoods like Fairbrae, Fairwood, and Cherry Chase feature post-and-beam framing with full-height single-pane glass set directly into the structural bays. The vertical posts aren’t decorative; they carry roof load. A contractor who notches a post or widens a bay to squeeze in a standard-width window transfers weight in ways the house was never designed to handle, and Sunnyvale inspectors who know these neighborhoods will fail the work on sight. Non-Eichler ranches from the same era have their own quirks: original aluminum sliding doors and jalousie windows that lost their seals decades ago and now fog, leak air, and stick.
Then there’s the climate. Sunnyvale sits close enough to San Francisco Bay that salt-laden marine air rolls in most summer mornings and settles on exposed aluminum frames. Bare aluminum oxidizes here faster than in Gilroy or Morgan Hill, which means frames that look tired on a 1960s ranch are often structurally weakened, not just cosmetically rough. California’s Title 24 code still requires dual-pane low-e glazing (a thin coating that reflects heat back into the room in winter and out in summer) on every replacement window, regardless of how mild the weather feels. Homeowners sometimes push back on that cost, but it’s not optional, and we don’t pretend otherwise.
Our Main Sunnyvale Services
Most Sunnyvale homeowners reach us for one of two reasons: existing windows have failed and need replacement, or new construction and additions need windows and doors installed from scratch. Here’s what each involves here.
Window Replacement in Sunnyvale
Replacing windows in Sunnyvale means measuring every opening individually, because Eichler bays and 1950s ranch openings rarely match standard mill sizes. We source custom-width thermal-break aluminum or fiberglass frames that fit those non-standard dimensions without altering the post-and-beam structure, then glaze them to meet Title 24. For non-Eichler homes, the work usually means pulling out failed aluminum sliders and jalousies and setting in dual-pane units that actually seal. Read the full breakdown on our Window Replacement in Sunnyvale page.
Window Installation in Sunnyvale
New window installation in Sunnyvale covers additions, remodels, and the occasional teardown-and-rebuild where the homeowner wants more glass than the original shell allowed. On Eichler additions, we coordinate with the framing plan so new bays replicate the original post-and-beam rhythm without compromising load paths. On standard construction, we install from day-one rough opening to final trim. Details on products, scheduling, and what to expect are on the Window Installation in Sunnyvale page.
Door Installation in Sunnyvale
Sunnyvale’s original front and rear doors from the 1950s and 1960s are often hollow-core or thin aluminum sliders that have warped and stopped sealing. Door installation here typically means replacing an entry door with a Therma-Tru unit, or swapping a failed aluminum slider for a modern hinged or multi-slide door that closes tight against the marine air. For a full rundown of options and local considerations, see Door Installation in Sunnyvale.
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 Sunnyvale
We install from eight manufacturer lines, and for Sunnyvale we lean on specific ones: PGT and CGI for impact-rated and coastal-grade products, CWS and ES Windows for custom-width aluminum and fiberglass that fits Eichler bays. Parts are stocked through our Bay Area supply chain, which means most hardware arrives within a week, not a month. See our brands for the full lineup.
Pricing for Window Company in Sunnyvale, CA
| Service | Typical Range in Sunnyvale |
|---|---|
| Standard single window replacement (dual-pane, low-e) | $650-$1,100 installed |
| Custom-width Eichler window replacement | $1,200-$2,600 installed |
| Full-height glass wall replacement (Eichler bay) | $3,500-$8,000+ installed |
| Aluminum sliding door replacement | $1,400-$2,800 installed |
| Entry door replacement (Therma-Tru, standard swing) | $1,200-$3,200 installed |
| Jalousie window replacement (multiple panes) | $900-$1,800 installed |
| New construction window installation (per opening) | $450-$900 installed |
| New construction door installation (per opening) | $700-$1,500 installed |
Eichler work pushes the top of these ranges because the units are custom-width and the structural care takes more labor. Every price we give in Sunnyvale is a written, line-item quote before any work starts, and it doesn’t change at the door.
Neighborhoods We Serve in Sunnyvale
We work across Sunnyvale’s residential core and the surrounding pockets, from the Eichler tracts to the standard ranches and newer infill. Some of the neighborhoods we serve most often:
- Fairbrae
- Cherry Chase
- Fairwood
- Sunnyvale West
- Ponderosa
Most of our Sunnyvale scheduling falls within a 2-3 week window for standard work and longer for custom Eichler orders, since the units are made to measure. We coordinate all dispatch from our San Francisco Bay Area office, and crews serve Sunnyvale locally.
Service Area – Cities Near Sunnyvale
In addition to Sunnyvale, we serve neighboring Peninsula and South Bay cities including Mountain View, CA, Santa Clara, CA, Cupertino, CA, and Los Altos, CA. If you’re just over the Sunnyvale line, give us a call and we’ll confirm coverage.
Serving Sunnyvale, CA - Our Local Coverage Area
We’re based in the Sunnyvale 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 Sunnyvale
Yes, most window and door replacements in Sunnyvale require a building permit, and on Eichler homes the inspector will look closely at framing modifications. We pull permits for every job where they’re required and schedule the inspections. Call (903) 354-7134 to confirm what your specific project needs.
For standard replacements, we typically schedule within two to three weeks of the written quote being approved. Custom Eichler windows take longer because the units are fabricated to your opening dimensions. We’ll give you a firm schedule when we provide the written price, and we show up in the window we gave you.
We work within whatever design-review process applies to your home. For Eichler neighborhoods with active committees, we can provide product specs and finish samples for approval. The structural work stays within existing openings so the home’s character is preserved. Call (903) 354-7134 to talk through your situation.
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 Sunnyvale Customers Say
"Our sliding patio door had come off its track years ago and we just lived with it. New one is smooth as butter. They hauled off the old one and vacuumed up before they left."
- Jessica Landry"Replaced eight drafty old windows that were basically single pane. The house is warmer already and the street noise is way down. Crew was on time both days and the price was exactly the quote."
- Harold Bemis"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