Best Licensed Plumbers in Fontana, CA
42 plumbing companies registered in Fontana hold current CSLB licenses, verified against official records as of August 17, 2026. The 8 below are the top-ranked, ordered by workers' compensation cover and years licensed.
- 696 active C-36 plumbing licenses in San Bernardino County; 44 registered in Fontana
- 20 of Fontana's 44 licenses (45.5%) carry current workers' compensation cover, not liability insurance; a blank usually means an owner-operator with no employees
- Median time licensed in Fontana: 9 years
- Longest Fontana licensure: since 1988
- 59 county licenses reach their expiration date within 90 days
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- Verified
- August 17, 2026
- Licensed since
- 1992
- Phone
- (909) 721-0085
- Verified
- August 17, 2026
- Licensed since
- 1992
- Phone
- (909) 822-8000
- Verified
- August 17, 2026
- Licensed since
- 2002
- Phone
- (909) 770-3477
- Verified
- August 17, 2026
- Licensed since
- 2004
- Phone
- (909) 355-0923
- Verified
- August 17, 2026
- Licensed since
- 2009
- Phone
- (909) 357-3553
- Verified
- August 17, 2026
- Licensed since
- 2009
- Phone
- (909) 380-4494
- Verified
- August 17, 2026
- Licensed since
- 2010
- Phone
- (909) 549-1725
- Verified
- August 17, 2026
- Licensed since
- 2011
- Phone
- (909) 904-2609
Compare the top 6 at a glance
| Company | License | Workers' comp | Licensed since |
|---|---|---|---|
| Robo One Plumbing Corporation | #639506 | On file | 1992 |
| A Avco Plumbing - Heating - A/c | #640316 | On file | 1992 |
| Ramy's Pool Plumbing | #802719 | On file | 2002 |
| Correct Cryogenics Inc. | #851423 | On file | 2004 |
| S T L Fabrication Inc. | #927373 | On file | 2009 |
| Aquadry Plumbing And Restoration Inc. | #930575 | On file | 2009 |
San Bernardino County plumbing licensure at a glance
California licenses contractors by classification and CSLB publishes one on every record, so supply can be counted exactly: 696 active C-36 plumbing licenses in San Bernardino County, 44 of them registered in Fontana. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median Fontana license has been held 9 years, and the longest-standing one dates to 1988. 20 of Fontana's 44 licenses (45.5%) 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: 696 of the county's 696 licenses carry the same $25,000 bond California sets by statute. 59 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 Fontana: common questions
How many licensed plumbers are there in Fontana?
44 active C-36 plumbing licenses are registered in Fontana, out of 696 across San Bernardino County. 42 Fontana-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 plumbers?
Yes. California licenses contractors by classification, and C-36 is the CSLB classification that authorises this work. 44 active C-36 plumbing licenses are registered in Fontana and 696 across San Bernardino County, the longest-standing issued in 1988. 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 20 of Fontana's 44 currently carry. 59 San Bernardino County licenses expire within 90 days.