Best Licensed Concrete Contractors in Alamo, CA
3 concrete companies registered in Alamo hold current CSLB licenses, verified against official records as of August 17, 2026. All 3 are listed below, ordered by years licensed.
- 142 active C-8 concrete licenses in Contra Costa County; 3 registered in Alamo
- California requires workers' compensation cover for C-8 licensees: 2 of Alamo's 3 licenses (66.7%) carry a current policy with CSLB
- Median time licensed in Alamo: 30 years
- Longest Alamo licensure: since 1987
- 14 county licenses reach their expiration date within 90 days
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- Verified
- August 17, 2026
- Licensed since
- 1987
- Phone
- (925) 765-6464
- Verified
- August 17, 2026
- Licensed since
- 1996
- Phone
- (925) 932-2192
- Verified
- August 17, 2026
- Licensed since
- 2026
- Phone
- (925) 849-6390
Compare the top 3 at a glance
| Company | License | Workers' comp | Licensed since |
|---|---|---|---|
| Rkh Constructors Inc. | #522195 | On file | 1987 |
| Bohannan Concrete Inc. | #720795 | On file | 1996 |
| Modular Cement Inc. | #1153552 | Expired on file | 2026 |
Contra Costa County concrete licensure at a glance
California licenses contractors by classification and CSLB publishes one on every record, so supply can be counted exactly: 142 active C-8 concrete licenses in Contra Costa County, 3 of them registered in Alamo. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median Alamo license has been held 30 years, and the longest-standing one dates to 1987. California law requires workers' compensation cover for C-8 licensees, so it is a legal baseline rather than a way to tell two contractors apart: 2 of Alamo's 3 licenses (66.7%) carry a current policy in CSLB's file, and we do not rank on it. The contractor bond is not a signal here: 142 of the county's 142 licenses carry the same $25,000 bond California sets by statute. 14 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.
Concrete Contractors in Alamo: common questions
How many licensed concrete contractors are there in Alamo?
3 active C-8 concrete licenses are registered in Alamo, out of 142 across Contra Costa County. 3 Alamo-registered companies passed our license verification, and all 3 are listed on this page. Only licenses CSLB shows as CLEAR and unexpired are listed.
Does California license concrete contractors?
Yes. California licenses contractors by classification, and C-8 is the CSLB classification that authorises this work. 3 active C-8 concrete licenses are registered in Alamo and 142 across Contra Costa County, the longest-standing issued in 1987. Only CLEAR, unexpired licenses appear here.
How do I check a concrete contractor'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-8 licensees and 2 of Alamo's 3 currently carry. 14 Contra Costa County licenses expire within 90 days.