Best Licensed Roofers in Castro Valley, CA
10 roofing companies registered in Castro Valley hold current CSLB licenses, verified against official records as of August 17, 2026. The 8 below are the top-ranked, ordered by years licensed.
- 194 active C-39 roofing licenses in Alameda County; 10 registered in Castro Valley
- California requires workers' compensation cover for C-39 licensees: 10 of Castro Valley's 10 licenses (100.0%) carry a current policy with CSLB
- Median time licensed in Castro Valley: 10 years
- Longest Castro Valley licensure: since 1979
- 15 county licenses reach their expiration date within 90 days
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- Verified
- August 17, 2026
- Licensed since
- 1979
- Phone
- (510) 537-8015
- Verified
- August 17, 2026
- Licensed since
- 1988
- Phone
- (510) 209-9352
- Verified
- August 17, 2026
- Licensed since
- 1992
- Phone
- (510) 538-1530
- Verified
- August 17, 2026
- Licensed since
- 1994
- Phone
- (408) 506-0510
- Verified
- August 17, 2026
- Licensed since
- 2001
- Phone
- (510) 780-6432
- Verified
- August 17, 2026
- Licensed since
- 2016
- Phone
- (510) 589-0950
- Verified
- August 17, 2026
- Licensed since
- 2017
- Phone
- (510) 913-1812
- Verified
- August 17, 2026
- Licensed since
- 2018
- Phone
- (650) 576-5113
Compare the top 6 at a glance
| Company | License | Workers' comp | Licensed since |
|---|---|---|---|
| Two Brothers Roofing Inc. | #378564 | On file | 1979 |
| Bailey Roofing | #549062 | On file | 1988 |
| Wonderlin Roofing Systems Inc. | #642517 | On file | 1992 |
| Wing's Roofing Inc. | #698113 | On file | 1994 |
| Adrian Gomez Roofing LLC | #790786 | On file | 2001 |
| Moore Residential Roofing Inc. | #1013956 | On file | 2016 |
Alameda County roofing licensure at a glance
California licenses contractors by classification and CSLB publishes one on every record, so supply can be counted exactly: 194 active C-39 roofing licenses in Alameda County, 10 of them registered in Castro Valley. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median Castro Valley license has been held 10 years, and the longest-standing one dates to 1979. California law requires workers' compensation cover for C-39 licensees, so it is a legal baseline rather than a way to tell two contractors apart: 10 of Castro Valley's 10 licenses (100.0%) carry a current policy in CSLB's file, and we do not rank on it. The contractor bond is not a signal here: 193 of the county's 194 licenses carry the same $25,000 bond California sets by statute. 15 county licenses reach their expiration date within the next 90 days. CSLB cannot link straight to a license record, so every listing above shows its number for you to type into CSLB's license lookup. How we verify.
Roofers in Castro Valley: common questions
How many licensed roofers are there in Castro Valley?
10 active C-39 roofing licenses are registered in Castro Valley, out of 194 across Alameda County. 10 Castro Valley-registered companies passed our license verification, and the 8 on this page are the top-ranked of those. Only licenses CSLB shows as CLEAR and unexpired are listed.
Does California license roofers?
Yes. California licenses contractors by classification, and C-39 is the CSLB classification that authorises this work, unlike Texas, which licenses no roofing contractors at all. 10 active C-39 roofing licenses are registered in Castro Valley and 194 across Alameda County, the longest-standing issued in 1979. Only CLEAR, unexpired licenses appear here.
How do I check a roofer's license in California?
Every listing above shows its CSLB license number. CSLB cannot link straight to a record, so open its license lookup and type the number in: it shows status, expiration, the contractor bond and workers' compensation cover, which California requires of C-39 licensees and 10 of Castro Valley's 10 currently carry. 15 Alameda County licenses expire within 90 days.