Best Licensed Plumbers in Los Altos, CA
5 plumbing companies registered in Los Altos hold current CSLB licenses, verified against official records as of August 17, 2026. All 5 are listed below, ordered by workers' compensation cover and years licensed.
- 613 active C-36 plumbing licenses in Santa Clara County; 5 registered in Los Altos
- 1 of Los Altos's 5 licenses (20.0%) carries current workers' compensation cover, not liability insurance; a blank usually means an owner-operator with no employees
- Median time licensed in Los Altos: 37 years
- Longest Los Altos licensure: since 1967
- 54 county licenses reach their expiration date within 90 days
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- Verified
- August 17, 2026
- Licensed since
- 2000
- Phone
- (650) 787-7061
- Verified
- August 17, 2026
- Licensed since
- 1967
- Phone
- (408) 821-8100
- Verified
- August 17, 2026
- Licensed since
- 1988
- Phone
- (650) 969-7664
- Verified
- August 17, 2026
- Licensed since
- 1989
- Phone
- (408) 718-9318
- Verified
- August 17, 2026
- Licensed since
- 2003
- Phone
- (650) 279-1834
Compare the top 5 at a glance
| Company | License | Workers' comp | Licensed since |
|---|---|---|---|
| Arcune Plumbing LLC | #779298 | On file | 2000 |
| T A Slack Plumbing Co | #247392 | Exempt or none on file | 1967 |
| Schues Heating/air Conditioning | #538155 | Exempt or none on file | 1988 |
| Mclennan Construction | #572745 | Exempt or none on file | 1989 |
| Lee Kratzer Plumbing | #829614 | Exempt or none on file | 2003 |
Santa Clara County plumbing licensure at a glance
California licenses contractors by classification and CSLB publishes one on every record, so supply can be counted exactly: 613 active C-36 plumbing licenses in Santa Clara County, 5 of them registered in Los Altos. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median Los Altos license has been held 37 years, and the longest-standing one dates to 1967. 1 of Los Altos's 5 licenses (20.0%) carries 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: 613 of the county's 613 licenses carry the same $25,000 bond California sets by statute. 54 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.
Plumbers in Los Altos: common questions
How many licensed plumbers are there in Los Altos?
5 active C-36 plumbing licenses are registered in Los Altos, out of 613 across Santa Clara County. 5 Los Altos-registered companies passed our license verification, and all 5 are listed on this page. Only licenses CSLB shows as CLEAR and unexpired are listed.
Does California license plumbers?
Yes. California licenses contractors by classification, and C-36 is the CSLB classification that authorises this work. 5 active C-36 plumbing licenses are registered in Los Altos and 613 across Santa Clara County, the longest-standing issued in 1967. Only CLEAR, unexpired licenses appear here.
How do I check a plumber'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 1 of Los Altos's 5 currently carry. 54 Santa Clara County licenses expire within 90 days.