Google's Top-Rated Window Pros Near Union City, CA
We don't have license data for window and glazing businesses in Union 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 Union City's climate means for your window spec
Alameda County sees about 15.9 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 Union City window matter as much as the glass sitting in it.
So ask any Union 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 4.2 mi away.
8 top-rated window replacement companies in and near Union 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 | Mr Window Replacement | 133 | Window installation service | Fremont 94536 | Google reviews | |
| 2 | Renewal by Andersen of San Francisco | 2,115 | Window installation service | Hayward 94544 | Google reviews | |
| 3 | R & M Quality Windows & Doors | 50 | Window installation service | Newark 94560 | Google reviews | |
| 4 | Pella Windows and Doors Showroom of Hayward, CA | 95 | Window installation service | Hayward 94545 | Google reviews | |
| 5 | Roxy Glass | 108 | Window installation service | Newark 94560 | Google reviews | |
| 6 | Roadrunner Glass | 44 | Window installation service | Fremont 94536 | Google reviews | |
| 7 | Rich Windows & Doors, Inc. | 29 | Window supplier | Not listed | Google reviews | |
| 8 | Hayward Glass | 15 | Window installation service | Hayward 94545 | 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?