Best Licensed General Contractors in Irwindale, CA
17 general contractors registered in Irwindale 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.
- 20,659 active B general building contractor licenses in Los Angeles County; 17 registered in Irwindale
- 14 of Irwindale's 17 licenses (82.4%) carry current workers' compensation cover, not liability insurance; a blank usually means an owner-operator with no employees
- Median time licensed in Irwindale: 21 years
- Longest Irwindale licensure: since 1957
- 1,744 county licenses reach their expiration date within 90 days
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- Verified
- August 22, 2026
- Licensed since
- 1957
- Phone
- (626) 795-8641
- Verified
- August 22, 2026
- Licensed since
- 1959
- Phone
- (626) 357-4400
- Verified
- August 22, 2026
- Licensed since
- 1967
- Phone
- (626) 812-4515
- Verified
- August 22, 2026
- Licensed since
- 1988
- Phone
- (626) 814-0818
- Verified
- August 22, 2026
- Licensed since
- 2001
- Phone
- (909) 921-1791
- Verified
- August 22, 2026
- Licensed since
- 2004
- Phone
- (909) 445-9707
- Verified
- August 22, 2026
- Licensed since
- 2004
- Phone
- (626) 814-3302
- Verified
- August 22, 2026
- Licensed since
- 2005
- Phone
- (626) 416-0958
Compare the top 6 at a glance
| Company | License | Workers' comp | Licensed since |
|---|---|---|---|
| Electric Service & Supply Co Of Pasadena | #169577 | On file | 1957 |
| Png Builders | #188629 | On file | 1959 |
| Gammill Electric Inc. | #250076 | On file | 1967 |
| Los Angeles Plumbing & Backflow Testing Inc. | #534844 | On file | 1988 |
| Alliance General Contractors | #799085 | On file | 2001 |
| California Maintenance & Environmental | #833711 | On file | 2004 |
Los Angeles 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: 20,659 active B general building contractor licenses in Los Angeles County, 17 of them registered in Irwindale. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median Irwindale license has been held 21 years, and the longest-standing one dates to 1957. 14 of Irwindale's 17 licenses (82.4%) 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: 20,631 of the county's 20,659 licenses carry the same $25,000 bond California sets by statute. 1,744 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 Irwindale: common questions
How many licensed general contractors are there in Irwindale?
17 active B general building contractor licenses are registered in Irwindale, out of 20,659 across Los Angeles County. 17 Irwindale-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. 17 active B general building contractor licenses are registered in Irwindale and 20,659 across Los Angeles County, the longest-standing issued in 1957. 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 14 of Irwindale's 17 currently carry. 1,744 Los Angeles County licenses expire within 90 days.