Licensed Contractors in Janesville, California
Janesville has 25 licensed contractors registered with the California Contractors State License Board across 11 trade classifications. The most common specialties are Concrete Contractor (2), Sanitation System Contractor (2), Electrical Contractor (1). 15 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
Specialty Contractors
C-8: Concrete Contractor
(2)
C-42: Sanitation System Contractor
(2)
C-10: Electrical Contractor
(1)
C-20: Warm-Air Heating, Ventilating and Air-Conditioning (HVAC) Contractor
(1)
C-27: Landscaping Contractor
(1)
C-47: General Manufactured Housing Contractor
(1)
C-57: Well Drilling Contractor
(1)
C-9: Drywall Contractor
(1)
C-54: Ceramic and Mosaic Tile Contractor
(1)
D34: Prefabricated Equipment
(1)
Colbert And Son
Active
License #433374
B
Janesville, CA
Est. 1983
Robert Freschl
Active
License #672721
C-27
Janesville, CA
Est. 1993
Lewis Construction
Active
License #798616
B
Janesville, CA
Est. 2001
Schortz Enterprise
Active
License #849907
B, C-47
Janesville, CA
Est. 2004
Harlans Bobcat/B-Hoe Service
Active
License #852760
C-42
Janesville, CA
Est. 2005
Kellogg Construction
Active
License #859661
B
Janesville, CA
Est. 2005
Your H20 Pro
Active
License #867400
C-57
Janesville, CA
Est. 2005
Jensen Drywall Works
Active
License #868957
C-9
Janesville, CA
Est. 2005
License #917787
B, C-42
Janesville, CA
Est. 2008
License #921915
B
Janesville, CA
Est. 2008
Krause Construction
Active
License #922895
B
Janesville, CA
Est. 2008
Cutting Edge Tile
Active
License #943397
C-54
Janesville, CA
Est. 2010
Jg Innovations Inc
Active
License #986041
D34
Janesville, CA
Est. 2013
J P Cullen & Sons Inc
Active
License #1003122
B
Janesville, CA
Est. 2015
License #1023378
C-10
Janesville, CA
Est. 2017
All Season Heating & Air
Active
License #1030669
C-20
Janesville, CA
Est. 2017
Elite Construction
Active
License #1069813
B
Janesville, CA
Est. 2020
Sun Shine Construction
Active
License #1109950
B
Janesville, CA
Est. 2023
Thompson Peak Construction
Active
License #1112956
B
Janesville, CA
Est. 2023
Wynn Concrete
Active
License #1128527
C-8
Janesville, CA
Est. 2024
License #1133778
B
Janesville, CA
Est. 2025
Frontier Builders
Active
License #1134405
B
Janesville, CA
Est. 2025
Cornerstone Building Inc
Active
License #1136487
B
Janesville, CA
Est. 2025
Wynn Concrete Llc
Active
License #1150203
C-8
Janesville, CA
Est. 2026
Faytak Construction
Suspended
License #822406
B
Janesville, CA
Est. 2003