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)
C P I Active
License #913123 B, C-13 Ontario, CA Est. 2008
Garcon Construction Inc Active
License #913550 A, C-8 Ontario, CA Est. 2008
Tom Foley Installations Incorporated Active
License #914990 C-6, D12 Ontario, CA Est. 2008
Pro Tech Plumbing Active
License #915091 C-36, C-42 Ontario, CA Est. 2008
Jewel Construction Inc Active
License #915742 B Ontario, CA Est. 2008
The Specialist Plumbing Active
License #915935 C-36 Ontario, CA Est. 2008
Northstar Phac Inc Active
License #916254 C-20, C-36 Ontario, CA Est. 2008
Phil'S Construction Active
License #916449 B Ontario, CA Est. 2008
Good Temperature Active
License #916498 C-38 Ontario, CA Est. 2008
Arijet Corporation Active
License #916562 A, C-7 Ontario, CA Est. 2008
Solorio Construction Active
License #917843 B Ontario, CA Est. 2008
Bonilla Construction Active
License #919777 B Ontario, CA Est. 2008
Stone Age Mason Active
License #919942 C-29 Ontario, CA Est. 2008
Diamond West Builders Active
License #921003 B Ontario, CA Est. 2008
All Star Mason Construction Active
License #921330 C-29 Ontario, CA Est. 2008
Orange West Plastering Active
License #921631 C-35, D39 Ontario, CA Est. 2008
Evies International Inc Active
License #924532 B Ontario, CA Est. 2008
Ibarra Electric Active
License #924579 C-10 Ontario, CA Est. 2008
Signum Lux Corp Active
License #925033 C-45 Ontario, CA Est. 2008
J P Pool Services Active
License #925284 D35 Ontario, CA Est. 2008
Santana'S Iron Work Active
License #926059 C-23 Ontario, CA Est. 2008
Tr Constructions Llc Active
License #926469 B Ontario, CA Est. 2008
Bcbc Construction Active
License #926682 B Ontario, CA Est. 2008
Electrical Services Active
License #926775 C-10 Ontario, CA Est. 2008
A - C Reglazing Active
License #927734 D12 Ontario, CA Est. 2009
Sandoval Active
License #927957 C-39 Ontario, CA Est. 2009
Exacto Builders Active
License #929047 B Ontario, CA Est. 2009
Johnnie Rightmer Active
License #929338 B Ontario, CA Est. 2009
Riccardi Floor Covering Inc Active
License #929568 C-15 Ontario, CA Est. 2009
Castle Contractor Active
License #933993 C-10, D28 +1 more Ontario, CA Est. 2009
John Fitzgerald Devine Active
License #934292 B Ontario, CA Est. 2009
Kemcorp Construction Inc Active
License #934522 A, B Ontario, CA Est. 2009
Top Rank Communications Inc Active
License #934552 C-7 Ontario, CA Est. 2009
Power Grade Inc Active
License #935306 A, C-10 Ontario, CA Est. 2009
Jeffrey Andrew Renne Active
License #935581 C-10 Ontario, CA Est. 2009
S C M Construction Inc Active
License #935736 B Ontario, CA Est. 2009
Samuel Elias Milam Active
License #937003 B, C-10 Ontario, CA Est. 2009
High Quality Group Active
License #938452 B Ontario, CA Est. 2009
R & S Overhead Doors Of Inland Empire Inc Active
License #939694 D21, D28 Ontario, CA Est. 2009
Bright Eye Pool Service Active
License #940135 C-53, D35 Ontario, CA Est. 2009
Custom Professional Electronics Inc Active
License #944235 C-7 Ontario, CA Est. 2010
Marcos Air Conditioning Active
License #950285 C-20 Ontario, CA Est. 2010
Expert Hardwood Flooring Active
License #950445 C-15, C-54 Ontario, CA Est. 2010
Proffitt Excavating Inc Active
License #952224 A Ontario, CA Est. 2010
Complete Pool Services Active
License #952530 C-53, D06 Ontario, CA Est. 2010
The Climate Controllers A Partnership Active
License #953750 C-20 Ontario, CA Est. 2010
Window Technique U.S.A Active
License #954479 D52 Ontario, CA Est. 2010
Water Solutions Active
License #954619 C-36 Ontario, CA Est. 2010
Direct Source Communication Inc Active
License #955641 C-7, C-10 Ontario, CA Est. 2010
Pona'S Construction Active
License #955730 B Ontario, CA Est. 2010

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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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