Licensed Contractors in Ontario, California

All license data is sourced from the California Contractors State License Board (CSLB). Last data update: May 24, 2026.

Contractors by Trade

Building (457)
Electrical (173)
Limited (120)
Painting (111)
HVAC (67)
Plumbing (62)
Roofing (61)
Earthwork (55)
Landscaping (48)
Welding (31)
Fire (28)
Solar (3)
Guenther Woodworks And Stairs Active
License #1148354 C-6 Ontario, CA Est. 2025
Westfire Prefabricated Fireplace Active
License #1148395 D34 Ontario, CA Est. 2025
Solid Drywall Works Inc Active
License #1148610 C-9 Ontario, CA Est. 2026
Hiyawill Construction Inc Active
License #1148677 B Ontario, CA Est. 2026
Cadre Construction Llc Active
License #1148827 B Ontario, CA Est. 2026
Alc Roofing Active
License #1148910 C-39 Ontario, CA Est. 2026
Tapia Roofing Active
License #1149023 C-39 Ontario, CA Est. 2026
Amins Construction Inc Active
License #1149094 B Ontario, CA Est. 2026
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
Di Shao Construction Active
License #1153127 B Ontario, CA Est. 2026
Ag Building And Remodeling Inc Active
License #1153779 B Ontario, CA Est. 2026
Lionel Rodirguez Active
License #1153852 B, C-27 Ontario, CA Est. 2026
Splash Painting California Llc Active
License #1154081 C-33 Ontario, CA Est. 2026
Ls Rack Inc Active
License #1154280 D21, D34 Ontario, CA Est. 2026
Navarro Painting Active
License #1154283 C-33 Ontario, CA Est. 2026
Wattline Electric Inc Active
License #1154320 C-10 Ontario, CA Est. 2026
Prominent Contracting Floor Covering Active
License #1154411 C-15 Ontario, CA Est. 2026
Jl Professional Tree Service Corp Active
License #1154444 C-49 Ontario, CA Est. 2026
Delta Energy Electrical Solution Active
License #1154808 C-10 Ontario, CA Est. 2026
Superior Post Tension Repairs Active
License #1154875 C-50 Ontario, CA Est. 2026
Luxedge Electric Active
License #1155010 C-10 Ontario, CA Est. 2026
Impact Welding Active
License #1155143 C-60 Ontario, CA Est. 2026
Get It Repaired Heating And Air Inc Active
License #1155418 C-20 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
Southern Light Electric Suspended
License #756715 C-10 Ontario, CA Est. 1998
Nick Leo Figueroa Suspended
License #824166 B Ontario, CA Est. 2003
Gomez And Gomez Inc Suspended
License #870559 C-10 Ontario, CA Est. 2006
Kyle Gilmore Plumbing Hvac R Suspended
License #883106 C-20, C-36 +1 more Ontario, CA Est. 2006
M C R Masonry Co Suspended
License #954433 C-8, C-29 Ontario, CA Est. 2010
Quality Construction & Repair Services Suspended
License #962423 B Ontario, CA Est. 2011
Szeka Painting & Wallcovering Suspended
License #1004115 C-33 Ontario, CA Est. 2015
Green Remodel Solutions Suspended
License #1012326 B, C-10 Ontario, CA Est. 2016
Duke Realty Limited Partnership Suspended
License #1019607 B Ontario, CA Est. 2016
Tlkd Corp Dba Tru Glazing Company Suspended
License #1025812 C-17 Ontario, CA Est. 2017
Solis Alarm Systems Suspended
License #1054405 C-10 Ontario, CA Est. 2019
Luna'S Garage Doors Inc Suspended
License #1064893 D28 Ontario, CA Est. 2020

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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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