Best Licensed General Contractors in Martinez, CA
177 general contractors registered in Martinez hold current CSLB licenses, verified against official records as of August 22, 2026. The 8 below are the top-ranked, ordered by workers' compensation cover and years licensed.
- 3,193 active B general building contractor licenses in Contra Costa County; 181 registered in Martinez
- 74 of Martinez's 181 licenses (40.9%) carry current workers' compensation cover, not liability insurance; a blank usually means an owner-operator with no employees
- Median time licensed in Martinez: 19 years
- Longest Martinez licensure: since 1953
- 284 county licenses reach their expiration date within 90 days
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- Verified
- August 22, 2026
- Licensed since
- 1953
- Phone
- (925) 229-4250
- Verified
- August 22, 2026
- Licensed since
- 1963
- Phone
- (925) 228-3380
- Verified
- August 22, 2026
- Licensed since
- 1970
- Phone
- (925) 228-7376
- Verified
- August 22, 2026
- Licensed since
- 1977
- Phone
- (925) 867-4654
- Verified
- August 22, 2026
- Licensed since
- 1979
- Phone
- (925) 228-4944
- Verified
- August 22, 2026
- Licensed since
- 1980
- Phone
- (925) 260-4332
- Verified
- August 22, 2026
- Licensed since
- 1983
- Phone
- (925) 313-5830
- Verified
- August 22, 2026
- Licensed since
- 1985
- Phone
- (925) 963-8534
Compare the top 6 at a glance
| Company | License | Workers' comp | Licensed since |
|---|---|---|---|
| Contra Costa Electric Inc. | #139885 | On file | 1953 |
| Martinez Sheet Metal Inc. | #222277 | On file | 1963 |
| Mazzamuto Construction Inc. | #266149 | Exempt or none on file | 1970 |
| Justice Construction Co | #334315 | On file | 1977 |
| Robert L Brown Construction Inc. | #384582 | On file | 1979 |
| Kepkee Construction Inc. | #394982 | On file | 1980 |
Contra Costa County general building licensure at a glance
California licenses contractors by classification and CSLB publishes one on every record, so supply can be counted exactly: 3,193 active B general building contractor licenses in Contra Costa County, 181 of them registered in Martinez. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median Martinez license has been held 19 years, and the longest-standing one dates to 1953. 74 of Martinez's 181 licenses (40.9%) carry current workers' compensation cover in CSLB's file. That is employee injury cover, not liability insurance, and a blank usually means an owner-operator with no employees - lawful, and not a mark against anyone. The contractor bond is not a signal here: 3,192 of the county's 3,193 licenses carry the same $25,000 bond California sets by statute. 284 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.
General Contractors in Martinez: common questions
How many licensed general contractors are there in Martinez?
181 active B general building contractor licenses are registered in Martinez, out of 3,193 across Contra Costa County. 177 Martinez-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 general contractors?
Yes. California licenses contractors by classification, and B is the CSLB classification that authorises this work. 181 active B general building contractor licenses are registered in Martinez and 3,193 across Contra Costa County, the longest-standing issued in 1953. Only CLEAR, unexpired licenses appear here.
How do I check a general 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 74 of Martinez's 181 currently carry. 284 Contra Costa County licenses expire within 90 days.
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