Licensed Contractors in Ontario, California

All license data is sourced from the California Contractors State License Board (CSLB). Last data update: April 05, 2026.

Contractors by Trade

Building (456)
Electrical (166)
Limited (119)
Painting (108)
HVAC (63)
Roofing (63)
Plumbing (61)
Earthwork (55)
Landscaping (49)
Welding (30)
Fire (28)
Solar (3)
H Septic Active
License #1149300 C-42 Ontario, CA Est. 2026
Fire Solution Masters Corp Active
License #1149321 C-16 Ontario, CA Est. 2026
Castle Construction And Development Inc Active
License #1149616 B Ontario, CA Est. 2026
Pnr Plumbing & Rooter Active
License #1150117 C-36 Ontario, CA Est. 2026
Koguma Sweet Home Active
License #1150188 B Ontario, CA Est. 2026
Trinidad Electrical Contractors Active
License #1150363 C-10 Ontario, CA Est. 2026
Pam Pan Xu Active
License #1150481 B Ontario, CA Est. 2026
Effina Active
License #1150901 C-20 Ontario, CA Est. 2026
A2Z Builders Group Inc Active
License #1150914 B Ontario, CA Est. 2026
Mve Electric Inc Active
License #1151112 C-10 Ontario, CA Est. 2026
Right Call Services Inc Active
License #1151470 B Ontario, CA Est. 2026
All Tech Commercial Pool Service & Repair Active
License #1152862 D35 Ontario, CA Est. 2026
Premium Carpet Installation Suspended
License #573637 C-15 Ontario, CA Est. 1989
Robcorp Construction Inc Suspended
License #649014 C-12 Ontario, CA Est. 1992
Atlantic Refrigeration & Appliances Suspended
License #662919 C-20, C-38 Ontario, CA Est. 1993
Cardin Construction Suspended
License #730241 B Ontario, CA Est. 1996
Simington Painting Company Suspended
License #739139 C-33 Ontario, CA Est. 1997
Southern Light Electric Suspended
License #756715 C-10 Ontario, CA Est. 1998
Kyle Gilmore Plumbing Hvac R Suspended
License #883106 C-20, C-36 +1 more Ontario, CA Est. 2006
Sutas Hangthaisong Suspended
License #887657 B Ontario, CA Est. 2006
Ambak Construction Suspended
License #923086 B Ontario, CA Est. 2008
Goedhart Landscaping Suspended
License #934150 C-27 Ontario, CA Est. 2009
M C R Masonry Co Suspended
License #954433 C-8, C-29 Ontario, CA Est. 2010
California Turf Management Inc Suspended
License #958651 C-27 Ontario, CA Est. 2011
Quality Construction & Repair Services Suspended
License #962423 B Ontario, CA Est. 2011
Pennco Construction Group Inc Suspended
License #972111 B Ontario, CA Est. 2012
Szeka Painting & Wallcovering Suspended
License #1004115 C-33 Ontario, CA Est. 2015
Duke Realty Limited Partnership Suspended
License #1019607 B Ontario, CA Est. 2016
Solis Alarm Systems Suspended
License #1054405 C-10 Ontario, CA Est. 2019
J & B Patios Covers Suspended
License #1061238 D03 Ontario, CA Est. 2019
Luna'S Garage Doors Inc Suspended
License #1064893 D28 Ontario, CA Est. 2020
De Luna Framing Suspended
License #1071148 C-5 Ontario, CA Est. 2020
Sky Color Painting Inc Suspended
License #1090696 C-33 Ontario, CA Est. 2022
Strong Group Specialty Coatings Suspended
License #1097888 C-33 Ontario, CA Est. 2022
Decaa Landscaping Suspended
License #1098408 C-27 Ontario, CA Est. 2022
Ultimate Electric Llc Suspended
License #1104900 C-10 Ontario, CA Est. 2023
Sun Microgrid Solar Inc Suspended
License #1105671 C-10 Ontario, CA Est. 2023
Delta Group Inc Suspended
License #1107352 A Ontario, CA Est. 2023
Meta Group Builder Suspended
License #1108241 B Ontario, CA Est. 2023
Royalty Plumbing Inc Suspended
License #1109464 C-36 Ontario, CA Est. 2023
Buena Vista Contractors Suspended
License #1112707 B Ontario, CA Est. 2023
#1 California Flooring Inc Suspended
License #1115597 C-15 Ontario, CA Est. 2024
Integrity Machinery & Pumps Suspended
License #1119800 D21 Ontario, CA Est. 2024
4S Epoxy & Polish Concrete Inc Suspended
License #1122757 D06 Ontario, CA Est. 2024
C E B M Inc Suspended
License #1124853 D06, D63 Ontario, CA Est. 2024
Er5 Construction Inc Suspended
License #1125259 B Ontario, CA Est. 2024
Nc Drywall Interiors Suspended
License #1131589 C-9 Ontario, CA Est. 2025
Chirco Construction Group Llc Suspended
License #1132019 B Ontario, CA Est. 2025
Golden Vast Construction Inc Suspended
License #1133809 B Ontario, CA Est. 2025
Wka Group Inc Suspended
License #1134050 C-10 Ontario, CA Est. 2025

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Licensing Resources

How to verify a contractor license
Deposit and payment rules for California contracts
Home improvement contract requirements

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