Licensed Contractors in Columbia, 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
Specialty Contractors
C-10: Electrical Contractor
(3)
C-33: Painting and Decorating Contractor
(3)
C-12: Earthwork and Paving Contractor
(2)
HAZ: Hazardous Substance Removal Certification
(2)
C-20: Warm-Air Heating, Ventilating and Air-Conditioning (HVAC) Contractor
(2)
C-54: Ceramic and Mosaic Tile Contractor
(1)
C-51: Structural Steel Contractor
(1)
C-9: Drywall Contractor
(1)
C-15: Flooring and Floor Covering Contractor
(1)
C-21: Building Moving/Demolition Contractor
(1)
Duane Ragan Construction
Suspended
License #874188
B
Columbia, CA
Est. 2006
Willis Construction Company
Suspended
License #893521
A, B +2 more
Columbia, CA
Est. 2007
Michael Patrick Gorman
Suspended
License #989032
B
Columbia, CA
Est. 2013
Clean Infusion Llc
Suspended
License #1105481
A
Columbia, CA
Est. 2023