Window Contractors Near Castro Valley, CA, by ZIP
Find the contractors based closest to you by scanning for your own ZIP code first, not just Castro Valley as a whole. 94546 is Castro Valley's most represented ZIP, with 4 licensed window contractors calling it home.
Licenses checked · California Contractors State License Board
Window contractors near you in Castro Valley
Grouped by ZIP code, then alphabetical by business name. Nobody paid their way into a ZIP group or a spot within it.
ZIP 94546 (4)
Mt Zion Glass
Window and glass contractor
- License
- C-17 Glazing · 1103681
- Since
- 2023
- Expires
- Apr 30, 2027
- ZIP
- 94546
Oscar's Glass
Window and glass contractor
- License
- C-17 Glazing · 1120822
- Since
- 2024
- Expires
- May 31, 2028
- ZIP
- 94546
Tanev Windows & Doors
Window and glass contractor
- License
- C-17 Glazing · 923777
- Since
- 2008
- Expires
- Oct 31, 2026
- ZIP
- 94546
Zeek's Discount Glass INC
Window and glass contractor
- License
- C-17 Glazing · 1086133
- Since
- 2022
- Expires
- May 31, 2028
- ZIP
- 94546
1ZIP code with listings
Castro Valley by ZIP code
Not every ZIP in Castro Valley has the same number of licensed window contractors; 94546 leads the city with 4.
A thinner ZIP in Castro Valley doesn't mean fewer options nearby, just fewer businesses whose license record lists that exact ZIP as home base.
The nearby-cities list further down Castro Valley's page exists exactly for a thin-ZIP situation like that.
Data: California Contractors State License Board license records, checked 2026-09-30.
6 mito San Leandro, the nearest city on this site
Widening the search beyond Castro Valley
San Leandro is the closest other city on this site to Castro Valley, about 6 miles away.
Worth a look if Castro Valley's own ZIP-by-ZIP lists are thin for the trade you need.
- San Leandro 6 mi · 8
- Hayward 6 mi · 22
- Union City 8 mi · 3
- San Ramon 8 mi · 4
- Danville 9 mi · 4
- Dublin 9 mi · 8
- Oakland 10 mi · 16
- Pleasanton 10 mi · 8
Data: U.S. Census Bureau, 2026 TIGER/Line Gazetteer County Subdivision file (Connecticut only) (2026); U.S. Census Bureau, 2026 TIGER/Line Gazetteer Files (places, counties, ZCTAs, states) (2026).