Best Licensed Landscaping Contractors in Ontario, CA
30 landscaping companies registered in Ontario hold current CSLB licenses, verified against official records as of August 20, 2026. The 8 below are the top-ranked, ordered by workers' compensation cover and years licensed.
- 425 active C-27 landscaping licenses in San Bernardino County; 30 registered in Ontario
- 13 of Ontario's 30 licenses (43.3%) carry current workers' compensation cover, not liability insurance; a blank usually means an owner-operator with no employees
- Median time licensed in Ontario: 9 years
- Longest Ontario licensure: since 1982
- 35 county licenses reach their expiration date within 90 days
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- Verified
- August 20, 2026
- Licensed since
- 1982
- Phone
- (909) 321-1400
- Verified
- August 20, 2026
- Licensed since
- 1986
- Phone
- (909) 983-1299
- Verified
- August 20, 2026
- Licensed since
- 1987
- Phone
- (909) 947-6474
- Verified
- August 20, 2026
- Licensed since
- 2000
- Phone
- (626) 914-7500
- Verified
- August 20, 2026
- Licensed since
- 2005
- Phone
- (909) 456-9719
- Verified
- August 20, 2026
- Licensed since
- 2011
- Phone
- (909) 949-9373
- Verified
- August 20, 2026
- Licensed since
- 2012
- Phone
- (909) 996-7782
- Verified
- August 20, 2026
- Licensed since
- 2015
- Phone
- (909) 938-1548
Compare the top 6 at a glance
| Company | License | Workers' comp | Licensed since |
|---|---|---|---|
| Premier Pools And Spas | #430551 | On file | 1982 |
| Shamrock Landscape & Maintenance | #496215 | On file | 1986 |
| M & R Construction Services Inc. | #508404 | On file | 1987 |
| Modesto Gudino DBA Best Landscaping | #781626 | On file | 2000 |
| Myco Construction | #853581 | On file | 2005 |
| California Turf Management Inc. | #958651 | On file | 2011 |
San Bernardino County landscaping licensure at a glance
California licenses contractors by classification and CSLB publishes one on every record, so supply can be counted exactly: 425 active C-27 landscaping licenses in San Bernardino County, 30 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 9 years, and the longest-standing one dates to 1982. 13 of Ontario's 30 licenses (43.3%) 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: 424 of the county's 425 licenses carry the same $25,000 bond California sets by statute. 35 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.
Landscaping Contractors in Ontario: common questions
How many licensed landscaping contractors are there in Ontario?
30 active C-27 landscaping licenses are registered in Ontario, out of 425 across San Bernardino County. 30 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 landscaping contractors?
Yes. California licenses contractors by classification, and C-27 is the CSLB classification that authorises this work. 30 active C-27 landscaping licenses are registered in Ontario and 425 across San Bernardino County, the longest-standing issued in 1982. Only CLEAR, unexpired licenses appear here.
How do I check a landscaping 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 13 of Ontario's 30 currently carry. 35 San Bernardino County licenses expire within 90 days.
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