Window Contractors Near Castro Valley, CA, by ZIP
Quick answer
Which window contractors are licensed in Castro Valley, CA?
Castro Valley, CA lists 3 window contractors from the California CSLB license file. Those license records were checked September 2026. Open the linked record before you hire. Use the list as a starting point only. A listing is not a recommendation.
Updated
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 3 licensed window contractors calling it home.
Licenses checked · California Contractors State License Board
Updated
Before you call the closest name on the list
Is this business's license address actually near me, or just technically within city limits?
Match it to the linked record.
How soon can someone come measure, and how soon after that could the windows actually be installed?
Ask before you hire anyone.
Who pulls the permit if this job needs one?
The row links to the file.
What's the full written scope: material, style, replacement method and count?
A listing is not a recommendation.
Is there a trip charge, and does it change based on distance from their listed address?
Confirm it on the linked record.
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 (3)
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
Zeek's Discount Glass INC
Window and glass contractor
- License
- C-17 Glazing · 1086133
- Since
- 2022
- Expires
- May 31, 2028
- ZIP
- 94546
1 ZIP 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 3.
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.
2 mi to Fairview, the nearest city on this site
Widening the search beyond Castro Valley
Fairview is the closest other city on this site to Castro Valley, about 2 miles away.
Worth a look if Castro Valley's own ZIP-by-ZIP lists are thin for the trade you need.
- Fairview 2 mi · 9
- Cherryland 3 mi · 10
- San Leandro 6 mi · 8
- Hayward 6 mi · 21
- Union City 8 mi · 3
- San Ramon 8 mi · 4
- Danville 9 mi · 4
- Dublin 9 mi · 8
Data: U.S. Census Bureau, 2026 TIGER/Line Gazetteer County Subdivision file (Connecticut only); U.S. Census Bureau, 2026 TIGER/Line Gazetteer Files (places, counties, ZCTAs, states).