Licensed Contractors in Ontario, California

Ontario has 919 licensed contractors registered with the California Contractors State License Board across 66 trade classifications. The most common specialties are Electrical Contractor (138), Warm-Air Heating, Ventilating and Air-Conditioning (HVAC) Contractor (52), Plumbing Contractor (50). 401 contractors hold general contractor licenses (Class A or B).

All license data is sourced from the California Contractors State License Board (CSLB). Local dataset stamp: N/A. Verify current status before hiring.

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Building & structure Electrical & low voltage Limited specialties Painting & finishes HVAC & mechanical Plumbing & water Roofing & exterior Earthwork & concrete Landscaping & outdoor Welding & fabrication Fire & safety Solar & energy
Gregg Electric Inc Active
License #201042 A, C-10 +1 more Ontario, CA Licensed since 1961
Airite Heating And Air Conditioning Inc Active
License #232930 C-4, C-20 +1 more Ontario, CA Licensed since 1965
Magnison And Moen Inc Active
License #264898 C-20 Ontario, CA Licensed since 1970
Rudolf Carl Theilacker Contractor Active
License #279711 A, B Ontario, CA Licensed since 1972
General Outdoor Advertising Active
License #292643 D42 Ontario, CA Licensed since 1974
James Dekoker Electrical Contractor Active
License #300802 C-10 Ontario, CA Licensed since 1974
Fullmer Construction Active
License #301814 B Ontario, CA Licensed since 1975
C P Construction Co Inc Active
License #304795 A, C-12 +2 more Ontario, CA Licensed since 1975
Ontario Refrigeration Commercial Air Conditioning Heating & Contr Active
License #315638 C-20, C-38 Ontario, CA Licensed since 1976
K & Z Cabinet Co Inc Active
License #319196 C-6 Ontario, CA Licensed since 1976
Mc Ginnis Custom Plastics Active
License #326086 D12 Ontario, CA Licensed since 1976
Thomas Anderson Wallcovering Inc Active
License #336082 C-33 Ontario, CA Licensed since 1977
R A Darracq Concrete Active
License #351727 C-8 Ontario, CA Licensed since 1978
Steve Crossman Active
License #362535 B, C-6 Ontario, CA Licensed since 1978
Paul B Hofer Iii Active
License #368051 B Ontario, CA Licensed since 1979
Pascal & Ludwig Constructors Inc Active
License #373525 A, B +1 more Ontario, CA Licensed since 1979
Terral Dunn Active
License #378323 C-7 Ontario, CA Licensed since 1979
A C Spraggins Engineering & Underground Inc Active
License #383440 A Ontario, CA Licensed since 1979
Metal Engineering & Mfg Active
License #409730 C-43 Ontario, CA Licensed since 1981
Cano Architecture Concrete Repair Active
License #414320 B, C-8 Ontario, CA Licensed since 1981
Baywood Construction Co Active
License #415687 B Ontario, CA Licensed since 1981
Spec Construction Co Inc Active
License #419626 A, B +11 more Ontario, CA Licensed since 1982
Premier Pools And Spas Active
License #430551 C-27, C-53 Ontario, CA Licensed since 1982
Packs Construction Active
License #453095 B, C-7 Ontario, CA Licensed since 1984
Anton Construction Active
License #461541 A, B Ontario, CA Licensed since 1984
Andrade Painting & Decorating Active
License #462142 C-33 Ontario, CA Licensed since 1984
Ajb Concrete & Masonry Construction Active
License #463690 C-8, C-29 Ontario, CA Licensed since 1984
Mark Ligtenberg Active
License #464429 C-10 Ontario, CA Licensed since 1984
Larry Methvin Installations Inc Dba Lmi Active
License #471010 C-17, D24 +1 more Ontario, CA Licensed since 1985
Swan Painting Active
License #476019 C-33 Ontario, CA Licensed since 1985
Craig E Holbrook Active
License #478551 B Ontario, CA Licensed since 1985
Upland Contracting Inc Active
License #481317 C-50 Ontario, CA Licensed since 1985
Rossetti Construction Company Inc Active
License #481575 B Ontario, CA Licensed since 1985
Correa Construction Active
License #482342 B, C-8 Ontario, CA Licensed since 1985
Stone Creations Incorporated Active
License #494256 D12 Ontario, CA Licensed since 1986
Shamrock Landscape & Maintenance Active
License #496215 C-27 Ontario, CA Licensed since 1986
M & R Construction Services Inc Active
License #508404 B, C-8 +2 more Ontario, CA Licensed since 1987
G & G Plumbing Active
License #508994 C-36 Ontario, CA Licensed since 1987
Gregory Alan Haydel Active
License #509362 C-6 Ontario, CA Licensed since 1987
Mike Walsh Dba A-C Power Systems Active
License #514277 C-10 Ontario, CA Licensed since 1987
Triple H Plastering Incorporated Active
License #517157 C-35 Ontario, CA Licensed since 1987
R B M Lock & Key Service Active
License #517474 C-28, D16 +1 more Ontario, CA Licensed since 1987
Robert Edward Temple Active
License #519817 C-33 Ontario, CA Licensed since 1987
Turnbow Electrical Services Active
License #525216 C-10 Ontario, CA Licensed since 1988
Sign City Active
License #527455 C-45 Ontario, CA Licensed since 1988
P V & C Plumbing And Piping Inc Active
License #529259 C-36 Ontario, CA Licensed since 1988
Klaus Norbert Kraemer Active
License #529570 B Ontario, CA Licensed since 1988
Cgo Construction Company Inc Active
License #532200 A, C-21 Ontario, CA Licensed since 1988
New Constructon Active
License #532419 B Ontario, CA Licensed since 1988
Hostetler Construction Active
License #532843 B Ontario, CA Licensed since 1988

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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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