Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Window Company in Pleasanton, CA
Westlight Windows & Doors is the Pleasanton window company homeowners call when original aluminum frames and hollow-core doors have stopped doing their job. We replace and install windows and doors in a city where triple-digit summer heat meets the Altamont Pass wind corridor, and where 1970s tract homes and Old Town Victorians each demand a very different approach. If you’re weighing window replacement or door installation in Pleasanton, call (903) 354-7134 for a written price before any work starts.
Why Pleasanton Homes Are Different
Pleasanton sits inland, behind the Coast Range, which means no marine layer to soften the afternoon sun. Summer days regularly pass 100°F, and the Altamont gap funnels steady westerly winds through the valley. For homes built in the 1970s through 1990s – the ranch and two-story tract stock in neighborhoods like Vintage Hills and along Foothill Road – that combination is hard on original aluminum single-pane windows. Seals fatigue, frames rack, and air infiltration becomes measurable within a few seasons. It’s why low-e, dual-pane upgrades with strong weatherstripping pay back faster here than almost anywhere else in Alameda County.
Old Town Pleasanton adds another layer. Late-Victorian and early-20th-century homes in that pocket often fall under the city’s historic preservation ordinance, which means a vinyl replacement window that sails through permitting in Dublin or Livermore can be rejected in Pleasanton in favor of wood or clad-wood profiles matching the original fenestration. That adds lead time and cost, and it catches a lot of homeowners off guard. We flag it early and plan for it.
Our Main Pleasanton Services
The two calls we get most from Pleasanton homeowners are window replacement and new door installation. Here’s a little about each, with a page devoted to the full details.
Window Replacement in Pleasanton
Replacing original aluminum single-pane windows with dual-pane low-e glass is the single most effective upgrade for Pleasanton’s heat and wind. On a typical tract home, that means swapping sliders and picture windows room by room, often while the family stays in place. We keep the old frames out of the landscaping, flash every opening properly, and match trim to the existing style. Owen Satterfield and our crews know which Old Town projects will need historic review before the estimate is even finished. Full details are on the Window Replacement in Pleasanton page.

Window Installation in Pleasanton
New-construction and addition work in Pleasanton means window installation from the rough opening up – flashing, leveling, insulating, and sealing against the afternoon wind that never quite quits. We install products from eight manufacturer lines, including ViewLux and PGT, so the glass is matched to the exposure rather than forced to fit one brand. Every window installation gets the same written price before we start and the same 365-Day Done Right Promise in writing when we finish. Read more on the Window Installation in Pleasanton page.

Door Installation in Pleasanton
Pleasanton’s 1970s through 1990s tract homes often still have their original hollow-core exterior doors, which means drafts, warping, and a weak thermal boundary on the hottest afternoons and windiest evenings. We install Therma-Tru and other entry doors with proper thresholds, weatherstripping, and secure hardware, and we handle the older Old Town doors where proportions and trim details have to look right or the city will notice. Details and pricing are on the Door Installation in Pleasanton page.

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 Pleasanton
We carry and install eight manufacturer lines so the product fits the job, not the other way around. In Pleasanton, the brands we install most are PGT, CGI, and CWS – all dependable for wind exposure and triple-digit heat. Parts and components are stocked at our Bay Area warehouse, so most Pleasanton jobs don’t wait on a manufacturer shipment. See our brands for the full picture.
Pricing for Window Company in Pleasanton, CA
| Service | Typical range in Pleasanton |
|---|---|
| Single-hung window replacement (standard size) | $450-$900 installed |
| Double-hung window replacement (standard size) | $500-$1,000 installed |
| Casement window replacement (standard size) | $550-$1,100 installed |
| Sliding window replacement (standard size) | $450-$950 installed |
| Picture / fixed window replacement | $400-$1,000 installed |
| Bay or bow window replacement | $2,500-$6,500 installed |
| Egress window replacement (basement code upgrade) | $1,200-$3,500 installed |
| Single door replacement (entry, steel or fiberglass) | $900-$2,800 installed |
| Sliding patio door replacement | $1,500-$4,500 installed |
| French door replacement (pair) | $2,500-$6,500 installed |
Historic review in Old Town can add $200-$700 for custom wood or clad-wood profiles and longer lead time. Whatever the number, you’ll get it in writing before we start – no revised invoices at the door, ever.
Neighborhoods We Serve in Pleasanton
We work throughout Pleasanton, from the 1970s tract streets of Vintage Hills to the older homes around Old Town and the newer builds along the Foothill corridor. Most neighborhoods are within a 15-minute drive of our central Bay Area dispatch, which keeps arrival windows tight.
- Vintage Hills
- Old Town Pleasanton
- Foothill Road corridor
- Val Vista
- Del Prado
Service Area – Cities Near Pleasanton
Westlight Windows & Doors serves Pleasanton and the surrounding Tri-Valley and East Bay communities. If you’re in a neighboring city, you’ll get the same written-price guarantee and live phone coverage. We also work regularly in Dublin, CA, Livermore, CA, San Ramon, CA, and Hayward, CA.
Serving Pleasanton, CA - Our Local Coverage Area
We’re based in the Pleasanton 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 Pleasanton
Most Pleasanton homeowners can get an estimate visit within a few business days, and our arrival window is committed in writing before we come out. Call (903) 354-7134 and a live person will schedule you – not a voicemail box.
Yes. We’ve worked through the city’s historic review process on Old Town projects and know when a wood or clad-wood profile will be required before the estimate is written. We carry those profiles and build the lead time into the schedule so there are no surprises.
No. Every Pleasanton job gets a written price before any work begins, and that price holds. The Kingswell Guarantee puts it in writing, along with our arrival window and a clean job site. If anything fails within the guarantee period, we return at no charge.
Call (903) 354-7134 for a free, written estimate on window replacement, window installation, or door installation in Pleasanton. A real person answers, day or night.
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 Pleasanton 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










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