Licensed Contractors in Ontario, California
All license data is sourced from the California Contractors State License Board (CSLB). Last data update: February 20, 2026.
Contractors by Classification
General Contractors
B: General Building Contractor
(341)
A: General Engineering Contractor
(63)
B-2: Residential Remodeling Contractor
(4)
Specialty Contractors
C-10: Electrical Contractor
(128)
C-33: Painting and Decorating Contractor
(54)
C-36: Plumbing Contractor
(49)
C-20: Warm-Air Heating, Ventilating and Air-Conditioning (HVAC) Contractor
(46)
C-7: Low Voltage Systems Contractor
(37)
C-27: Landscaping Contractor
(34)
C-8: Concrete Contractor
(29)
C-15: Flooring and Floor Covering Contractor
(29)
C-39: Roofing Contractor
(26)
D28: Doors, Gates and Activating Devices
(22)
Macias Gardening And Design
Active
License #1104990
C-27
Ontario, CA
Est. 2023
Singularity Construction Inc
Active
License #1105261
B
Ontario, CA
Est. 2023
West Coast Current
Active
License #1105587
C-10
Ontario, CA
Est. 2023
Elias Plumbing
Active
License #1105933
C-36
Ontario, CA
Est. 2023
Project X Developer Inc
Active
License #1106298
B
Ontario, CA
Est. 2023
License #1106320
C-53
Ontario, CA
Est. 2023
Galaxy Tile & Stone Inc
Active
License #1106613
C-54
Ontario, CA
Est. 2023
Hydrogen Construction
Active
License #1106675
B
Ontario, CA
Est. 2023
Wright Wood Roofing Inc
Active
License #1106726
C-39
Ontario, CA
Est. 2023
Aboveground Solutions Inc
Active
License #1106979
B
Ontario, CA
Est. 2023
Gatorwraps Inc
Active
License #1107852
D52
Ontario, CA
Est. 2023
Pac Builders Corp
Active
License #1107900
B
Ontario, CA
Est. 2023
Method Design Build
Active
License #1108931
B
Ontario, CA
Est. 2023
Cdn Construction
Active
License #1109836
B
Ontario, CA
Est. 2023
Rovac Builder
Active
License #1110101
B
Ontario, CA
Est. 2023
Tfr Communications Inc
Active
License #1110215
C-7
Ontario, CA
Est. 2023
West End Heating And Air
Active
License #1110549
C-20
Ontario, CA
Est. 2023
Hps Construction
Active
License #1111105
B
Ontario, CA
Est. 2023
Vlp Design Build
Active
License #1111387
B
Ontario, CA
Est. 2023
Mendoza Home Remodeling
Active
License #1111722
B-2
Ontario, CA
Est. 2023
Big Worm Water Well Drilling
Active
License #1112675
C-57
Ontario, CA
Est. 2023
Buena Vista Contractors
Active
License #1112707
B
Ontario, CA
Est. 2023
License #1113745
A, B +1 more
Ontario, CA
Est. 2023
Elgin Guerrero
Active
License #1113824
A
Ontario, CA
Est. 2023
License #1113850
B
Ontario, CA
Est. 2023
American General Builders
Active
License #1114159
B
Ontario, CA
Est. 2023
Villa General Contracting
Active
License #1114540
B
Ontario, CA
Est. 2023
Cap Angeles Construction Inc
Active
License #1115382
B
Ontario, CA
Est. 2024
#1 California Flooring Inc
Active
License #1115597
C-15
Ontario, CA
Est. 2024
License #1115619
A, C-36 +1 more
Ontario, CA
Est. 2024
Haven King Construction
Active
License #1115816
B
Ontario, CA
Est. 2024
Masonry Arena
Active
License #1115861
C-29
Ontario, CA
Est. 2024
J & J Vinyl Fencing Inc
Active
License #1115997
C-13
Ontario, CA
Est. 2024
Jml Electric
Active
License #1116001
C-10
Ontario, CA
Est. 2024
Adaptive Controls Services
Active
License #1116142
C-20
Ontario, CA
Est. 2024
Dry Zone Emergency Services
Active
License #1116314
D64
Ontario, CA
Est. 2024
Westside Pro Builders
Active
License #1116368
B
Ontario, CA
Est. 2024
Thomas Mcgee Development Inc
Active
License #1117295
B
Ontario, CA
Est. 2024
Bprecise Plastering Inc
Active
License #1117375
C-35
Ontario, CA
Est. 2024
Any Color You Like Paint Co
Active
License #1117517
C-33
Ontario, CA
Est. 2024
Jqn Paint Corp
Active
License #1117673
C-33
Ontario, CA
Est. 2024
Raiden Electric
Active
License #1118259
C-10
Ontario, CA
Est. 2024
License #1118751
B
Ontario, CA
Est. 2024
License #1118806
C-13
Ontario, CA
Est. 2024
Ls Construction
Active
License #1118857
B
Ontario, CA
Est. 2024
High Profile Synthetics
Active
License #1119288
D12
Ontario, CA
Est. 2024
Amz Plumbing Inc
Active
License #1119395
C-36
Ontario, CA
Est. 2024
License #1119638
C-32
Ontario, CA
Est. 2024
Jimmy'S Tree Care Inc
Active
License #1119821
D49
Ontario, CA
Est. 2024
Enhanced Roofing Inc
Active
License #1120148
B, C-39
Ontario, CA
Est. 2024