Licensed Contractors in San Dimas, California
San Dimas has 318 licensed contractors registered with the California Contractors State License Board across 53 trade classifications. The most common specialties are Electrical Contractor (48), Plumbing Contractor (27), Warm-Air Heating, Ventilating and Air-Conditioning (HVAC) Contractor (24). 166 contractors hold general contractor licenses (Class A or B).
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
(139)
A: General Engineering Contractor
(25)
B-2: Residential Remodeling Contractor
(2)
Specialty Contractors
C-10: Electrical Contractor
(48)
C-36: Plumbing Contractor
(27)
C-20: Warm-Air Heating, Ventilating and Air-Conditioning (HVAC) Contractor
(24)
C-33: Painting and Decorating Contractor
(14)
C-7: Low Voltage Systems Contractor
(14)
C-39: Roofing Contractor
(10)
C-6: Cabinet, Millwork and Finish Carpentry Contractor
(10)
C-53: Swimming Pool Contractor
(8)
C-9: Drywall Contractor
(7)
C-27: Landscaping Contractor
(7)
License #254919
C-20, C-43
San Dimas, CA
Est. 1968
Steam Masters
Active
License #270220
B
San Dimas, CA
Est. 1971
Pieter Van Gaalen
Active
License #316652
B, D16
San Dimas, CA
Est. 1976
American Scale Co Inc
Active
License #327295
D21
San Dimas, CA
Est. 1976
Rf Herrera Construction
Active
License #356559
B, C-29
San Dimas, CA
Est. 1978
Soyland Enterprises
Active
License #366909
B
San Dimas, CA
Est. 1978
License #386225
B
San Dimas, CA
Est. 1979
License #385622
C-53
San Dimas, CA
Est. 1979
Giraldo Electric
Active
License #388647
C-10, C-20 +1 more
San Dimas, CA
Est. 1980
Russell A Pershing
Active
License #393163
B, C-8
San Dimas, CA
Est. 1980
Jim Skinner Construction
Active
License #393892
B
San Dimas, CA
Est. 1980
Dorsey Plumbing Inc
Active
License #396571
C-36
San Dimas, CA
Est. 1980
B & D Construction
Active
License #409057
B
San Dimas, CA
Est. 1981
Sang-Yup Steve Lee
Active
License #410198
D24
San Dimas, CA
Est. 1981
Martin E Wade
Active
License #411004
C-20
San Dimas, CA
Est. 1981
Bryan L Geer
Active
License #442675
B
San Dimas, CA
Est. 1983
Alex Rojano
Active
License #450737
C-10
San Dimas, CA
Est. 1983
License #464976
C-10
San Dimas, CA
Est. 1984
Michael Glenn Robbertze
Active
License #485198
B, C-33
San Dimas, CA
Est. 1986
Sea West Enterprises Inc
Active
License #486074
A, B +1 more
San Dimas, CA
Est. 1986
All American Electric
Active
License #489902
C-10
San Dimas, CA
Est. 1986
Scott James Construction
Active
License #494955
B
San Dimas, CA
Est. 1986
M A Calabrese Associates
Active
License #496208
B
San Dimas, CA
Est. 1986
General Pump Company Inc
Active
License #496765
A, C-57 +1 more
San Dimas, CA
Est. 1986
Galen T Colley
Active
License #504544
C-10
San Dimas, CA
Est. 1987
Accurate Inc
Active
License #505516
B, C-28
San Dimas, CA
Est. 1987
License #514132
A
San Dimas, CA
Est. 1987
Ryan Sipp
Active
License #519854
B
San Dimas, CA
Est. 1987
Athena Engineering Inc
Active
License #523044
B, C-4 +4 more
San Dimas, CA
Est. 1988
Zenzola Construction Inc
Active
License #525379
B, D28
San Dimas, CA
Est. 1988
License #532120
B, C-10
San Dimas, CA
Est. 1988
James Anthony Spalione Iii
Active
License #542859
C-15
San Dimas, CA
Est. 1988
Jb Plumbing
Active
License #550584
B, C-36
San Dimas, CA
Est. 1988
Fire Plumbing
Active
License #557478
C-16, C-36
San Dimas, CA
Est. 1989
G & M Construction Co
Active
License #559962
B
San Dimas, CA
Est. 1989
A & F Electric Inc
Active
License #560540
C-10
San Dimas, CA
Est. 1989
License #563111
C-12
San Dimas, CA
Est. 1989
Thomas Construction
Active
License #563397
B
San Dimas, CA
Est. 1989
Sonrise Pool & Spas
Active
License #579514
C-53
San Dimas, CA
Est. 1989
R E Drywall Contracting Inc
Active
License #584494
C-2, C-9
San Dimas, CA
Est. 1990
License #585042
A, B +1 more
San Dimas, CA
Est. 1990
J G'S Kitchen Concepts
Active
License #586133
B
San Dimas, CA
Est. 1990
License #592062
C-20
San Dimas, CA
Est. 1990
License #592581
B
San Dimas, CA
Est. 1990
Martin Paul Electric
Active
License #596792
B, C-10
San Dimas, CA
Est. 1990
Ahmad M El-Mustapha
Active
License #612544
B
San Dimas, CA
Est. 1991
Rain Bow Heating & Air Inc
Active
License #613976
C-20
San Dimas, CA
Est. 1991
Yadgir Construction Inc
Active
License #616203
B
San Dimas, CA
Est. 1991
Earl Construction
Active
License #619685
B
San Dimas, CA
Est. 1991
Star Construction
Active
License #622180
B
San Dimas, CA
Est. 1991