New windows and doors improve comfort, cut energy bills and add long-term value to your home. Westlight Windows San Jose pairs proven product lines with our own installing crews for lasting performance - and a price we put in writing.
Choose your installer
The unit is half the job - the install is the other half. Our own background-checked crews measure, set, seal and insulate every opening, and they know the lines we quote inside and out because they install them every week.
Select the right products
Compare styles, materials and glass packages side by side until the fit is right for your rooms, your budget and your goals. The product-line comparison below is the place to start.
Prepare your home for install
Before install day we walk you through a short checklist - furniture pulled back, treatments down, a clear path to each opening - so install day is watch-it-happen, not scramble.
Compare the Lines We Quote
Every project is priced on the same lines, side by side - the price indicators below are relative, and your consultant shows exact numbers on your actual openings.
PGTThe line homeowners arrive naming - the most impact certifications in the industry$$$
- More impact certifications than any other line we quote
- WinGuard, EnergyVue and ClassicVue Max systems built for every wind zone
- 99% on-time delivery keeps your install date on the calendar
CGIThe heavyweight impact line$$$$$
- Large-missile impact ratings for the strictest wind zones
- Architectural-grade aluminum with commercial-depth frames
- The line we quote when protection is the whole point
CWSThe value pick$$
- Vinyl systems built to strict wind codes
- Strong energy packages at the friendliest price point
- The smart start for whole-home replacements on a budget
ESWSlim lines, big glass$$$$
- Narrow-sightline aluminum for modern elevations
- Oversized openings and floor-to-ceiling glass
- Impact-rated without the bunker look
ECOThe aluminum impact workhorse$$$
- Factory-built aluminum impact systems
- A strong price-to-protection ratio for coastal homes
- Proven inventory lines with short lead times
Window Company in San Jose, CA
Westlight Windows & Doors is a window and door company serving San Jose homeowners with replacement, installation, and door work backed by the Kingswell Guarantee: a written price before any work starts, a committed arrival window, a clean job site, and a written guarantee on the completed work. San Jose’s housing stock is heavy with mid-century single-family homes whose original aluminum windows and sliding patio doors are now thermally inefficient, seal-failed, or simply hard to operate. If you’re dealing with drafty Eichler glass walls or a patio door that no longer slides, call us at (669) 333-7786 for a free estimate.
Why San Jose Homes Are Different
San Jose’s Mediterranean climate means warm, dry summers and mild, wet winters. That combination is rough on old windows. Intense summer sun bakes aluminum frames and breaks down seals, while cool, damp winter mornings produce condensation and mold on single-pane glass. Many of the homes we visit in neighborhoods like Willow Glen, Cambrian, and Almaden Valley were built between the 1950s and 1970s. They’re sprawling ranch-style and Eichler-inspired designs with large expanses of glass and sliding doors that were never meant to hold up for sixty years.
The Eichler homes deserve special mention. In San Jose’s Eichler tracts, the original floor-to-ceiling glass walls and clerestory windows are iconic but notoriously drafty, and replacing them often means custom framing and permits. Homeowners with these mid-century designs typically want to keep the look while upgrading to double-pane, low-e glass (a thin coating that reflects heat back into the room in winter and out in summer). That’s a more involved job than a standard window swap, and it’s one we’ve handled in neighborhoods across San Jose.
Our Main San Jose Services
Most San Jose homeowners reach out to us for one of three things: replacing old windows, installing windows in a new addition or remodel, or replacing an entry door or patio door that has seen better days. Each has its own dedicated page, linked below.
Window Replacement in San Jose
San Jose’s older neighborhoods are full of original single-pane aluminum windows that leak heat in winter, let in too much sun in summer, and fog up when the seals fail. Window Replacement in San Jose covers removing those old units and installing new energy-efficient windows sized for the existing openings. The work often includes addressing dry rot around the frame, a common issue in homes that have lived through decades of San Jose’s wet winters and dry summers. We take measurements, give you a written price, and don’t change it at the door.
Window Installation in San Jose
If you’re adding square footage, converting a garage, or building new, you need windows installed into fresh openings rather than swapped into old ones. Window Installation in San Jose covers new-construction and remodel window installation, including flashing and waterproofing to City of San Jose code. San Jose’s summer heatwaves make low-e glass worth considering for any south- or west-facing wall, and we’ll walk you through the options from our manufacturer lines without pushing you toward a single brand.
Door Installation in San Jose
Entry doors in San Jose take a beating from direct sun, and sliding patio doors in mid-century homes are often original equipment that now sticks, leaks, or won’t lock properly. Door Installation in San Jose covers exterior doors, patio sliders, and storm doors, with attention to fit, finish, and air sealing around the frame. A well-installed door cuts drafts and makes a real difference in how the house feels on a cold January morning.
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 San Jose
We install products from eight manufacturer lines, including PGT, CGI, and ViewLux. That range lets us match the right glass and frame to the job, whether it’s an impact-rated window for a hillside home or an energy-efficient replacement for a 1960s ranch. Not every brand is right for every opening. We help you pick what actually fits. See our brands for the full picture.
Pricing for Window Company in San Jose, CA
| Service | Typical range in San Jose |
|---|---|
| Single-window replacement (standard size, vinyl or aluminum) | $600 – $1,300 installed |
| Full-home window replacement (8 – 12 windows, mid-century ranch) | $7,000 – $16,000 installed |
| Sliding patio door replacement | $1,800 – $4,500 installed |
| Entry door replacement (single, standard size) | $1,200 – $3,200 installed |
| Eichler clerestory window replacement (custom framing) | $900 – $2,400 per opening installed |
| Low-e glass upgrade (per window, added to replacement) | $90 – $250 added per window |
| New-construction window installation (per opening, no demo) | $450 – $950 per opening installed |
| Dry rot repair around window or door frame (per opening) | $200 – $700 per opening |
What pushes the price up in San Jose: Eichler-style custom glass, second-story access, dry rot around old frames, and any permit or HOA requirement that adds paperwork to the job. What doesn’t push the price up: us. Every homeowner receives a written price before any work starts, and we don’t revise it at the door.
Neighborhoods We Serve in San Jose
We work across San Jose, from the flatlands to the foothills. Response time for estimates in most of the city runs one to three business days, depending on how many crews are already scheduled that week.
- Willow Glen
- Cambrian
- Almaden Valley
- Rose Garden
- Berryessa
- Evergreen
Service Area – Cities Near San Jose
While this page is focused on San Jose, our crews also cover neighboring cities in the South Bay. If you’re in Milpitas, CA, Sunnyvale, CA, Cupertino, CA, or Mountain View, CA, the same written-price guarantee applies. Dispatch and scheduling are coordinated from our San Francisco Bay Area office, and technicians travel out to your city on a committed arrival window.
Serving San Jose, CA - Our Local Coverage Area
We’re based in the San Jose 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 San Jose
Yes. When a job requires a City of San Jose building permit, we pull it before work begins and the inspection happens after we finish. Not every replacement needs a permit, but when it does, we handle it. You’ll never be asked to pull your own permit or schedule your own inspection.
Most estimates in San Jose are scheduled within one to three business days. When you call (669) 333-7786, a live person answers, day or night, and books you into a real time slot. We show up in the window we gave you, not a four-hour range that stretches into the evening.
Some do, especially in planned communities and Eichler tracts where the original exterior look is protected. We help you identify whether your HOA has an approval process and what documentation they need. The product specification from our quote is usually enough to satisfy an HOA review board, and we provide it as part of the written price.
We cover all of San Jose, from Alviso to Evergreen to the Almaden foothills. If you’re unsure whether a particular street is in our zone, call (669) 333-7786 and the person who answers will tell you directly. No auto-attendant, no “leave a message and we’ll get back to you.”
If your San Jose home still has its original aluminum windows or a patio slider that fights you every time you open it, call (669) 333-7786 to schedule a free estimate. You’ll get a written price before any work starts, a real arrival window, and a guarantee in writing when the job is done.
Six Reasons Homeowners Choose Westlight Windows San Jose
Laminated glass and reinforced frames hold up to wind-driven rain, hail and flying debris, so your openings stay sealed when the weather turns.
Low-E insulated impact glass from our manufacturer lines commonly cuts monthly cooling bills 20-30%.
Laminated impact glass shuts out up to 40% of outside noise - traffic, neighbors, weather.
Monitoring services run $30-90 a month. Laminated impact glass resists forced entry around the clock, with no subscription.
Tighter seals and insulated glass even out hot and cold rooms and stop the drafts at the frame.
A full impact package upgrades curb appeal, buyer confidence and appraised value in one project.
Other Westlight Windows San Jose Services
What Neighbors Say About Westlight Windows San Jose
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 San Jose Customers Say
"Windows are great and the install was solid. One of the installers was quieter and didn't explain much, but the lead walked me through everything at the end and made sure I was happy."
- Lamar Jennings"Front door was swollen and wouldn't latch half the year. New door and frame, done in a day. Looks great and actually seals. Written price didn't budge."
- Renee Saldana"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