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)
A I C Interior Inc Active
License #806562 B Ontario, CA Est. 2002
A T S Construction Active
License #807837 B Ontario, CA Est. 2002
Dh Remodel & Construction Inc Active
License #808571 B Ontario, CA Est. 2002
Unum Construction Active
License #809385 B Ontario, CA Est. 2002
Top Of The Line Roofing Active
License #810795 C-39 Ontario, CA Est. 2002
So-Cal Showerdoors Active
License #812487 C-17 Ontario, CA Est. 2002
J Elias Enterprises Inc Dba J & J Industrial Services Active
License #814328 B, C-10 +2 more Ontario, CA Est. 2002
Blue Haven Pools Active
License #816057 B, C-53 Ontario, CA Est. 2002
Grace Rooter And Plumbing Active
License #817808 C-36 Ontario, CA Est. 2003
Sweet Water Landscaping Active
License #817917 C-27, C-36 Ontario, CA Est. 2003
Hhs Construction Llc Active
License #818906 A, B +3 more Ontario, CA Est. 2003
E B A Glassworks Active
License #821501 C-17 Ontario, CA Est. 2003
Custom Carpentry Active
License #826799 B Ontario, CA Est. 2003
Envirokinetics Inc Active
License #828248 A Ontario, CA Est. 2003
Alexandru Lapos Active
License #828822 C-6 Ontario, CA Est. 2003
Rico Inc Active
License #831227 B, C-33 Ontario, CA Est. 2004
Draper Properties Active
License #833028 B Ontario, CA Est. 2004
Jose L Diaz Dba Empire Roofing Co Active
License #836616 C-39 Ontario, CA Est. 2004
Roadfix Inc Active
License #840367 C-32 Ontario, CA Est. 2004
New View Auto Glass Inc Active
License #840405 C-17 Ontario, CA Est. 2004
Elite Construction Active
License #841247 B Ontario, CA Est. 2004
Elements Of Style Active
License #841955 C-6 Ontario, CA Est. 2004
Advance Construction Active
License #842289 B Ontario, CA Est. 2004
Life Builders Active
License #842842 B Ontario, CA Est. 2004
Rigoberto Carbajal Dba Perfect Touch Drywall Active
License #843628 C-9 Ontario, CA Est. 2004
Julio Antonio Castillo Active
License #844311 C-10, C-20 Ontario, CA Est. 2004
M J S Painting & Coating'S Service Active
License #844467 C-33 Ontario, CA Est. 2004
American Jetting Services Inc Active
License #845651 C-36 Ontario, CA Est. 2004
Primebore Directional Boring Corp Active
License #847499 A, C-7 Ontario, CA Est. 2004
Santana Construction Enterprises Active
License #848705 B Ontario, CA Est. 2004
Brandon Fisher Construction Active
License #848840 B Ontario, CA Est. 2004
Flores Building Active
License #850742 B Ontario, CA Est. 2004
Villalobos Glass Co Inc Active
License #851274 C-17 Ontario, CA Est. 2004
West Coast Plumbing Active
License #853144 C-36 Ontario, CA Est. 2005
Myco Construction Active
License #853581 B, C-17 +4 more Ontario, CA Est. 2005
Advanced Electrical Innovations Active
License #856385 C-10 Ontario, CA Est. 2005
Zeven Electric Active
License #856544 C-10 Ontario, CA Est. 2005
Eliseo Miramontez Active
License #857173 B, C-6 Ontario, CA Est. 2005
Affordable Services Active
License #857640 C-21, D06 +2 more Ontario, CA Est. 2005
Luis M Cardenas Active
License #857846 C-29 Ontario, CA Est. 2005
Caliber Drywall Active
License #858112 C-9 Ontario, CA Est. 2005
Flow Dynamics Inc Active
License #858166 C-36 Ontario, CA Est. 2005
Commercial Concrete Constructors Inc Active
License #858888 A, B +1 more Ontario, CA Est. 2005
Jose Salas Active
License #859777 C-33 Ontario, CA Est. 2005
Stephen Woods Active
License #863681 D28 Ontario, CA Est. 2005
Steven Elliott Construction Active
License #863929 B Ontario, CA Est. 2005
James East Electrical Inc Active
License #863933 C-10 Ontario, CA Est. 2005
Jesse'S Air Systems A / C & Heating Active
License #864645 C-20 Ontario, CA Est. 2005
Dao Le Active
License #864673 C-20 Ontario, CA Est. 2005
Wirenet Communications Inc Active
License #865478 C-7, C-10 Ontario, CA Est. 2005

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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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