Foster City, CA's Highest-Rated Window Installers on Google
We don't have license data for window and glazing businesses in Foster City, CA the way we do for some other cities on this site. This page leans on Google Maps instead: 8 businesses, ranked by rating weighted against how many people reviewed them. A strong Google rating still isn't the same thing as a license on file, so ask to see one before you sign anything.
Google Maps ratings checked · How we rank
3CIECC climate zone · ENERGY STAR South-Central zone
What Foster City's climate means for your window spec
San Mateo County sees about 19.0 inches of precipitation and 0.0 inches of snow in a normal year.
Weather at that level is one more reason the flashing and sill pan under a Foster City window matter as much as the glass sitting in it.
So ask any Foster City contractor how they handle both, not just which brand they carry.
Data: U.S. EPA / DOE, ENERGY STAR, ENERGY STAR Version 7.0 Climate Zones by County/ZIP (Windows, Doors, and Skylights) (V7.0); Pacific Northwest National Laboratory (DOE Building America), Guide to Determining Climate Zone by County: Building America and IECC 2021 Updates (PNNL-33270) (2021 IECC), from the nearest NOAA station 6.1 mi away.
8 top-rated window replacement companies in and near Foster City
Ranked by Google rating weighted against how many people left one, so a perfect score from a handful of reviewers never outranks a strong average built on hundreds. That ranking is not a license check; call the state directly and ask for the contractor's license or registration number.
| Rank | Business | Google rating | Reviews | Category | Area | Google Maps listing |
|---|---|---|---|---|---|---|
| 1 | San Mateo Glass and Mirror | 125 | Window installation service | San Carlos 94070 | Google reviews | |
| 2 | Pella Windows and Doors Showroom of Belmont, CA | 111 | Window installation service | Belmont 94002 | Google reviews | |
| 3 | Peninsula Siding Company | 16 | Window installation service | San Mateo 94402 | Google reviews | |
| 4 | Pace Glass Co | 19 | Window installation service | San Mateo 94401 | Google reviews | |
| 5 | First Glass Co | 30 | Window installation service | San Mateo 94403 | Google reviews | |
| 6 | Advanced Window Systems | 3 | Window installation service | Belmont 94002 | Google reviews | |
| 7 | Windows Unlimited | 5 | Window supplier | Belmont 94002 | Google reviews | |
| 8 | Belmont Pioneer | 43 | Window supplier | Belmont 94002 | Google reviews |
Questions to ask before you sign
- How long have you held your state license, and can I see the number?
- Is this a full-frame replacement or an insert into my existing frame, and why that one?
- Who pulls the permit, and does this change trigger an egress check on a bedroom window?
- What flashing and sill pan will you use, and in what order do you install them?
- If my home was built before 1978, is your crew lead-safe certified for this job?
- What's the completion date in writing, and what happens if the schedule slips?