Licensed Contractors in Ontario, CA
Updated November 1, 2026 · Data from CSLB's public license file
- 917licenses
- 95.9%Clear
- 4.1%suspended (state 4.6%)
- 43.6%workers' comp exempt
- 9.5 yrsmedian time licensed
- 85new in 12 months
CSLB's license file shows 917 contractors with a Ontario address, across 15 trades with at least 20 licensees each (the biggest is general contractors). 4.1% have a suspension, compared with 5.1% across San Bernardino County and 4.6% statewide.
Licensed trades in Ontario
- General Contractors (337)
- Electricians (137)
- Limited Specialty Contractors (101)
- General Engineering Contractors (61)
- HVAC Contractors (51)
- Painters (50)
- Plumbers (49)
- Low Voltage Contractors (36)
- Landscapers (34)
- Concrete Contractors (32)
- Flooring Contractors (32)
- Roofers (26)
- Cabinet and Finish Carpentry Contractors (22)
- Glazing Contractors (21)
- Drywall Contractors (20)
Smaller trades in Ontario (under 20 licensees) are searchable:
- Tile Contractors (18)
- Pool Contractors (16)
- Masonry Contractors (16)
- Structural Steel Contractors (13)
- Fire Protection Contractors (12)
- Refrigeration Contractors (12)
- Demolition and Building Moving Contractors (12)
- Septic and Sanitation Contractors (9)
- Plastering and Stucco Contractors (9)
- Earthwork and Paving Contractors (8)
- Parking and Highway Improvement Contractors (7)
- Sign Contractors (7)
- Reinforcing Steel Contractors (7)
- Ornamental Metal Contractors (6)
- Fencing Contractors (5)
- Sheet Metal Contractors (5)
- Welding Contractors (5)
- Framing Contractors (4)
- Residential Remodeling Contractors (4)
- Solar Contractors (3)
- Asbestos Abatement Contractors (3)
- Tree and Palm Contractors (3)
- Traffic Control Contractors (2)
- Boiler and Steam Fitting Contractors (2)
Suspensions in Ontario, by reason
Explainers: Suspended: contractor's bond · Suspended: workers' compensation · Suspended: liability insurance · Suspended: employee/worker bond
Newest Clear licenses in Ontario
| Business name | License # | Status | Years | Workers' comp | Bond |
|---|---|---|---|---|---|
| Quality Framing Jc INC | 1163421 | Clear | <1 | Insured | On file |
| West Wind Mechanical INC | 1163372 | Clear | <1 | Insured | On file |
| Hernandez Powers & Lighting | 1163274 | Clear | <1 | Exempt | On file |
| Ap Concrete | 1163175 | Clear | <1 | Insured | On file |
| Valley Carpets | 1163036 | Clear | <1 | Insured | On file |
| Kornerstone Construction | 1162745 | Clear | <1 | Exempt | On file |
| Sunpride Construction INC | 1162476 | Clear | <1 | Exempt | On file |
| Luevano Elite Electric LLC | 1162203 | Clear | <1 | Exempt | On file |
| Al Construction & Design | 1161927 | Clear | <1 | Exempt | On file |
| Solid Integrity Construction | 1161433 | Clear | <1 | Exempt | On file |
Source: CSLB public data · Updated November 1, 2026 Status can change at any time. Verify on CSLB's Instant License Check.
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