Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Window Company in Atherton, CA
Atherton is not a typical window market, and the homes here make that clear the moment you pull into a driveway. We’re Westlight Windows & Doors, and on estate-scale properties with median values above $7 million, window and door work means custom rough openings, architect-specified products, and the town’s own building department reviewing every exterior change. No two jobs look alike, and the marine air that rolls off the Bay every afternoon works against cheap aluminum and builder-grade seals. If you need an honest price and a written guarantee before work begins, call (903) 354-7134.
Why Atherton Homes Are Different
Atherton’s housing stock splits between mid-century ranch estates from the 1950s through the 70s, early-twentieth-century Mediterranean Revival and Colonial homes, and a growing wave of complete teardown-and-rebuild projects by owners building contemporary custom homes with expansive glass. The older estates rarely have standard window openings. Original frames were often site-built, and we regularly measure openings that vary by a quarter inch or more from one side to the next. Direct unit replacement is rarely a clean swap. In most cases the rough opening itself needs modification, or the unit must be fabricated to the existing dimensions exactly.
Weather matters here in ways it doesn’t over the hill. Atherton sits on the Bay side of 280, and the marine layer is a daily visitor. Air carries measurable salt, and over a decade or two that salt works on aluminum window tracks, exposed hardware, and threshold components on the big folding door systems these estates favor. Winters stay mild, but rain concentrates from November through March, and condensation on tall, single-story-spanning window walls is a real problem unless the frames are thermally broken and the glazing is high-performance. Atherton also runs its own incorporated building department rather than deferring to San Mateo County, so even a like-for-like window replacement that shifts exterior cladding color or adjusts unit dimensions can pull a planning review. Contractors who work mostly on county parcels underestimate this and it costs owners real money in schedule delays.
Our Main Atherton Services
Most calls we get from Atherton fall into three buckets. Each has its own page because the job conditions, pricing, and permit questions are genuinely different.
Window Replacement in Atherton
Replacement work here usually means pulling old site-built or custom frames from a mid-century or period home and fitting new units into openings that are rarely square or standard. We spend real time on the rough opening because that’s where Atherton jobs either hold up or go sideways. Salt-air corrosion on existing hardware, condensation on older single-pane glazing, and the town’s permit trigger on exterior changes all shape the scope. Impact-rated PGT and CGI units show up often, as does thermally broken aluminum from CWS. You’ll find the full picture on Window Replacement in Atherton.

Window Installation in Atherton
New-build and major-remodel installations in Atherton frequently involve glass systems sized for great-room walls that run twenty feet or more. We install the eight manufacturer lines our company carries, including large-format and impact-rated product, and we coordinate with the owner’s architect or builder on rough opening details before anything gets ordered. Clearance, flashing, and water management around those oversized openings matter more in Atherton’s wet winters than almost anywhere else in the Bay Area. Details are on the Window Installation in Atherton page.

Door Installation in Atherton
Entry doors on Atherton estates carry a lot of weight, both architecturally and structurally. Owners here are not buying a stock slab from a big-box aisle. They’re specifying wide pivot doors, custom millwork, and multi-point hardware on frames that have to hold up to rain-season moisture and salt in the air. Threshold rot on older homes is common, and we address the rough opening before hanging the new door. Our Door Installation in Atherton page covers what installation involves and what it costs here.

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 Atherton
We install ViewLux, PGT, and CGI product in Atherton regularly, with CWS specified on many contemporary builds. Parts and hardware for these lines are stocked in our Bay Area supply chain, which keeps ordering straightforward. For the full lineup and what each brand suits, see our brands.
Pricing for Window Company in Atherton, CA
| Service | Typical range in Atherton |
|---|---|
| Standard window replacement, per window | $800-$1,400 installed |
| Entry door replacement | $1,500-$3,500 installed |
| Patio/folding glass wall installation | $8,000-$35,000+ installed |
| Custom or oversized window fabrication | $2,500-$7,000+ per unit |
| Full-home window replacement on a mid-century estate | $40,000-$120,000+ |
| Hardware retrofit on existing window or door systems | $450-$1,800 |
| Interior door installation, custom millwork | $900-$2,800 per door |
| Exterior door with side-lites and transom | $4,000-$12,000+ |
Atherton prices run above most Bay Area towns because the units are larger, the rough openings are rarely standard, and custom fabrication is involved more often than not. Regardless of scope, you receive a written price before any work starts, and that number does not change at the door.
Neighborhoods We Serve in Atherton
We work throughout Atherton, including the estates west of Alameda de las Pulgas, the Lindenwood area, and the properties around Holbrook-Palmer Park. Atherton’s large lots and long driveways mean our crews plan each visit around the specific home, not a zip-code-wide route.
- Lindenwood
- West Atherton
- Holbrook-Palmer Park area
- Atherton Oaks
Service Area – Cities Near Atherton
We schedule Atherton work through our Bay Area office, and the same crews cover nearby cities including Menlo Park, CA, Redwood City, CA, Palo Alto, CA, and Stanford, CA. That coverage means we can coordinate scheduling across a client’s primary home in Atherton and a secondary property nearby.
Serving Atherton, CA - Our Local Coverage Area
We’re based in the Atherton 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 Atherton
Our Bay Area crews serve Atherton directly, and we schedule a committed arrival window for every visit. A real person answers the phone 24/7, so you’ll know the window before you hang up. Call (903) 354-7134 and we’ll get you on the board.
Many do. Atherton runs its own building department, and changes to exterior dimensions or cladding color can trigger a planning review even when a unit swap looks simple. We handle permit paperwork and inspections for you, and the written price reflects what the town requires.
No. You get a written price before any work starts, and Westlight does not revise quotes at the door. If the town’s review adds a condition we didn’t foresee, we’ll talk it through and put any adjustment in writing before moving ahead.
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 Atherton Customers Say
"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"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










Before
After
Before
After
Before
After