Window Replacement Contractors in Pittsburg, CA
Window replacement contractors in Pittsburg range from long-standing shops to 0 newer entrants licensed in the last two years. Every name below comes from the California license record, not a paid submission.
Licenses checked · California Contractors State License Board
3BIECC climate zone · ENERGY STAR South-Central zone
Climate and energy performance in Pittsburg
Contra Costa County sees about 12.6 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 Pittsburg window matter as much as the glass sitting in it.
So ask any Pittsburg 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 8.4 mi away.
16median years licensed
How long Pittsburg's window contractors have been licensed
Pittsburg counts 5 window replacement contractors in the state's own file, with the earliest entry dating to 1986.
80% of that list cleared a decade on their license before this page ever existed.
0 are new to the file within the last two years, working the same Pittsburg streets as shops with decades on record.
Data: California Contractors State License Board license records, checked 2026-09-30.
5 window replacement contractors based in Pittsburg
Listed A to Z by business name. No listed business paid for placement or position.
| Business | Category | License class | License no. | Status | Effective | Expires | ZIP | Official record |
|---|---|---|---|---|---|---|---|---|
| Black Diamond Glass | Window and glass contractor | C-17 Glazing | 983316 | Active | Apr 30, 2013 | Apr 30, 2027 | 94565 | Verify license |
| Camacho Glass & Construction INC | Window and glass contractor | B General Building / C-17 Glazing | 1073461 | Active | Feb 19, 2021 | Feb 28, 2027 | 94565 | Verify license |
| Commercial Glass & Aluminum INC | Window and glass contractor | C-17 Glazing | 663108 | Active | Jan 15, 1993 | Jul 31, 2027 | 94565 | Verify license |
| East County Glass & Window INC | Window and glass contractor | B General Building / C-17 Glazing | 494305 | Active | Jun 27, 1986 | Aug 31, 2028 | 94565 | Verify license |
| U S Glass & Aluminum INC Which Will Do Business In California As | Window and glass contractor | C-17 Glazing | 948742 | Active | Jun 14, 2010 | Jun 30, 2028 | 94565 | Verify license |
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?