Best Licensed Roofers in San Dimas, CA
10 roofing companies registered in San Dimas hold current CSLB licenses, verified against official records as of August 17, 2026. The 8 below are the top-ranked, ordered by years licensed.
- 1,145 active C-39 roofing licenses in Los Angeles County; 10 registered in San Dimas
- California requires workers' compensation cover for C-39 licensees: 9 of San Dimas's 10 licenses (90.0%) carry a current policy with CSLB
- Median time licensed in San Dimas: 21 years
- Longest San Dimas licensure: since 1995
- 96 county licenses reach their expiration date within 90 days
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- Verified
- August 17, 2026
- Licensed since
- 1995
- Phone
- (909) 241-0410
- Verified
- August 17, 2026
- Licensed since
- 1998
- Phone
- (909) 305-0063
- Verified
- August 17, 2026
- Licensed since
- 1999
- Phone
- (909) 592-6007
- Verified
- August 17, 2026
- Licensed since
- 1999
- Phone
- (626) 229-0950
- Verified
- August 17, 2026
- Licensed since
- 2000
- Phone
- (909) 305-9314
- Verified
- August 17, 2026
- Licensed since
- 2004
- Phone
- (909) 394-9520
- Verified
- August 17, 2026
- Licensed since
- 2010
- Phone
- (626) 230-4772
- Verified
- August 17, 2026
- Licensed since
- 2014
- Phone
- (909) 667-4300
Compare the top 6 at a glance
| Company | License | Workers' comp | Licensed since |
|---|---|---|---|
| C & C Roofing | #709658 | On file | 1995 |
| Cabral Roofing & Waterproofing Corporation | #746649 | On file | 1998 |
| American Services Group Of California Inc. | #769061 | On file | 1999 |
| The M & M Development Group DBA The M & M Construction Group | #772942 | On file | 1999 |
| Preferred Roofing | #777824 | Exempt or none on file | 2000 |
| P H Roofing | #851584 | On file | 2004 |
Los Angeles County roofing licensure at a glance
California licenses contractors by classification and CSLB publishes one on every record, so supply can be counted exactly: 1,145 active C-39 roofing licenses in Los Angeles County, 10 of them registered in San Dimas. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median San Dimas license has been held 21 years, and the longest-standing one dates to 1995. 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: 9 of San Dimas's 10 licenses (90.0%) carry a current policy in CSLB's file, and we do not rank on it. The contractor bond is not a signal here: 1,140 of the county's 1,145 licenses carry the same $25,000 bond California sets by statute. 96 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 San Dimas: common questions
How many licensed roofers are there in San Dimas?
10 active C-39 roofing licenses are registered in San Dimas, out of 1,145 across Los Angeles County. 10 San Dimas-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 San Dimas and 1,145 across Los Angeles County, the longest-standing issued in 1995. 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 9 of San Dimas's 10 currently carry. 96 Los Angeles County licenses expire within 90 days.