Best Licensed Pool Contractors in Ontario, CA
15 pool companies registered in Ontario 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.
- 165 active C-53 swimming pool licenses in San Bernardino County; 15 registered in Ontario
- 9 of Ontario's 15 licenses (60.0%) carry current workers' compensation cover, not liability insurance; a blank usually means an owner-operator with no employees
- Median time licensed in Ontario: 11 years
- Longest Ontario licensure: since 1982
- 16 county licenses reach their expiration date within 90 days
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- Verified
- August 17, 2026
- Licensed since
- 1982
- Phone
- (909) 321-1400
- Verified
- August 17, 2026
- Licensed since
- 1991
- Phone
- (909) 628-4730
- Verified
- August 17, 2026
- Licensed since
- 2002
- Phone
- (909) 947-6474
- Verified
- August 17, 2026
- Licensed since
- 2006
- Phone
- (909) 923-3222
- Verified
- August 17, 2026
- Licensed since
- 2014
- Phone
- (909) 464-1846
- Verified
- August 17, 2026
- Licensed since
- 2014
- Phone
- (909) 521-5277
- Verified
- August 17, 2026
- Licensed since
- 2018
- Phone
- (909) 437-3871
- Verified
- August 17, 2026
- Licensed since
- 2022
- Phone
- (562) 202-8790
Compare the top 6 at a glance
| Company | License | Workers' comp | Licensed since |
|---|---|---|---|
| Premier Pools And Spas | #430551 | On file | 1982 |
| Jesse Morales & Sons | #618714 | On file | 1991 |
| M & R Construction Services Inc. | #816057 | On file | 2002 |
| Golden Leaf Construction Inc. | #876099 | On file | 2006 |
| Paradise Pool Supplies & Repairs | #994024 | On file | 2014 |
| Tom's Concrete Inc. | #996477 | On file | 2014 |
San Bernardino County swimming pool licensure at a glance
California licenses contractors by classification and CSLB publishes one on every record, so supply can be counted exactly: 165 active C-53 swimming pool licenses in San Bernardino County, 15 of them registered in Ontario. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median Ontario license has been held 11 years, and the longest-standing one dates to 1982. 9 of Ontario's 15 licenses (60.0%) 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: 164 of the county's 165 licenses carry the same $25,000 bond California sets by statute. 16 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.
Pool Contractors in Ontario: common questions
How many licensed pool contractors are there in Ontario?
15 active C-53 swimming pool licenses are registered in Ontario, out of 165 across San Bernardino County. 15 Ontario-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 pool contractors?
Yes. California licenses contractors by classification, and C-53 is the CSLB classification that authorises this work. 15 active C-53 swimming pool licenses are registered in Ontario and 165 across San Bernardino County, the longest-standing issued in 1982. Only CLEAR, unexpired licenses appear here.
How do I check a pool 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 9 of Ontario's 15 currently carry. 16 San Bernardino County licenses expire within 90 days.