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Window Company in Millbrae, CA
We’re Westlight Windows & Doors, an independently owned and operated Kingswell location, and we handle window replacement, window installation, and door installation throughout Millbrae. Homes here sit directly under SFO’s flight paths, which means many were fitted with FAA acoustic windows through the Airport Noise Insulation Program decades ago. Those packages are now failing at the seals, and replacing them correctly requires matching the original sound ratings, not just swapping glass. If you need straight answers and a written price before any work starts, call us at (903) 354-7134.
Why Millbrae Homes Are Different
Millbrae’s residential core is dominated by post-WWII ranch and traditional homes built roughly between 1945 and 1970. Most of those houses went up with aluminum single-pane windows or early jalousie units that are now decades past their serviceable life. A smaller pocket of 1920s and 1930s Craftsman bungalows near downtown presents a different challenge entirely: their rough openings were framed to custom widths that standard modern window units don’t fit without some framing modification.
The climate adds another layer. The marine layer that funnels through the gap between San Bruno Mountain and the coastal hills keeps Millbrae foggier and saltier than inland San Mateo or neighboring Burlingame. That persistent moisture accelerates oxidation on aluminum frames and causes galvanic corrosion where dissimilar metals meet in older window assemblies. Failed dual-pane seals, fogged glass, and condensation between panes are the most common service calls we field here year-round.
Our Main Millbrae Services
Most Millbrae homeowners call us for one of two things: windows that need replacing because the seals have failed or frames have corroded, or doors that no longer close properly against the damp, salty air. Below are the three services we provide in Millbrae, each with its own dedicated page.
Window Replacement in Millbrae
Replacing windows in Millbrae is rarely a simple swap-out. Homes with ANIP acoustic windows need replacement units that match or exceed the original STC 35-40+ noise ratings, otherwise the house suddenly gets louder even as the glass gets clearer. For older ranch homes with original aluminum frames, we’re usually pulling out corroded single-pane units and sizing new thermals that fit without rebuilding the wall. See Window Replacement in Millbrae for full pricing and what to expect.

Window Installation in Millbrae
New-construction and addition window installation in Millbrae means dealing with the same moisture and salt that wrecks older frames before they’re even installed. We spec low-e glass (a thin coating that reflects heat back into the room in winter and out in summer) as standard here, because the fog and humidity make condensation control a bigger factor than in drier parts of the Peninsula. Flashing details matter more in Millbrae than almost anywhere else we work, because wind-driven fog finds every gap. Full details are on the Window Installation in Millbrae page.

Door Installation in Millbrae
Entry doors in Millbrae take a beating from salt air and persistent damp, especially on the bayside of El Camino Real. Warped jambs, swollen wood, and rusted hinges are normal service calls for us. For homes under the SFO noise contour, an exterior door replacement also needs to preserve the acoustic seal that the original ANIP retrofit provided, so we match the door slab, threshold, and weatherstripping to the same standard. Learn more on the Door Installation in Millbrae 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 Millbrae
We install products from PGT, CGI, ES Windows, and ECO Window Systems, among the eight manufacturer lines we carry. Impact-rated and acoustic-rated options from PGT and CGI are particularly relevant for Millbrae homes under the SFO flight paths. Parts and units are stocked through our Bay Area supply chain, which keeps most Millbrae installations moving without long lead times. See our brands for the full list.
Pricing for Window Company in Millbrae, CA
| Service | Typical range in Millbrae |
|---|---|
| Single-hung window replacement | $450-$850 per window installed |
| Double-hung window replacement | $550-$1,100 per window installed |
| Casement window replacement | $600-$1,200 per window installed |
| Picture / fixed window replacement | $500-$1,000 per window installed |
| Sliding window replacement | $550-$1,100 per window installed |
| Bay or bow window replacement | $2,500-$6,500 installed |
| Acoustic-rated window replacement (STC 35+) | $900-$1,800 per window installed |
| New-construction window installation | $700-$1,400 per opening |
| Entry door replacement | $1,500-$4,000 installed |
| Patio door replacement | $1,800-$5,500 installed |
Acoustic-rated units that match ANIP specifications run at the higher end of every range because the glass itself costs more. Corroded framing, custom rough openings on older Craftsman homes, and salt-damaged flashing are the three things that push Millbrae jobs above the baseline. Whatever the number is, you get it in writing before any work starts, and it won’t change at the door.
Neighborhoods We Serve in Millbrae
We work throughout Millbrae, from the flatlands near the Bayshore to the hillside streets that climb toward the 280 corridor. Most neighborhoods fall within a short drive of our Bay Area dispatch point, so scheduling stays predictable.
- Downtown Millbrae and the Craftsman district
- Mills Estates
- Meadow Glen
- Lomita Hills
- The Aviator neighborhood near the Bayshore
Service Area – Cities Near Millbrae
Beyond Millbrae, our crews cover the neighboring Peninsula cities where the same fog, salt air, and flight-path conditions apply. We work regularly in San Bruno, CA, Burlingame, CA, South San Francisco, CA, and Pacifica, CA. If you’re on the bay side or up in the coastal hills, call us and we’ll tell you straight whether your job is in our service area.
Serving Millbrae, CA - Our Local Coverage Area
We’re based in the Millbrae 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 Millbrae
Yes. Homes that received FAA Airport Noise Insulation Program windows originally got units rated STC 35 or higher, and we match or exceed those specs on every replacement. If your ANIP windows have fogged or lost their seal, we’ll inspect them and quote acoustic-rated replacements that preserve the soundproofing. Call (903) 354-7134 to schedule a free estimate.
Most like-for-like window replacement in Millbrae does not require a building permit, but any work that alters rough openings, changes window sizes, or involves structural framing does. We handle permit paperwork for every job where it’s needed and won’t start until the approval is in hand.
We schedule estimates from our Bay Area office, and most Millbrae homeowners can get an appointment within a few business days of calling. Since our crews work the Peninsula regularly, we batch Millbrae visits to keep travel time short. Call (903) 354-7134 and the live person who answers will set you up.
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 Millbrae 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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