Licensed Contractors in Watertown, California
Watertown has 7 licensed contractors registered with the California Contractors State License Board across 8 trade classifications. The most common specialties are Prefabricated Equipment (2), Electrical Sign Contractor (1), Parking and Highway Improvement Contractor (1). 1 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
D34: Prefabricated Equipment
(2)
C-45: Electrical Sign Contractor
(1)
C-32: Parking and Highway Improvement Contractor
(1)
D06: Concrete Related Services
(1)
D38: Sand and Water Blasting
(1)
C-20: Warm-Air Heating, Ventilating and Air-Conditioning (HVAC) Contractor
(1)
C-10: Electrical Contractor
(1)
Minnesota Tower Systems Inc
Active
License #588152
A
Watertown, CA
Est. 1990
Integrity Installation Inc
Active
License #761734
D34
Watertown, CA
Est. 1999
R & T Specialties Inc
Active
License #953199
D34
Watertown, CA
Est. 2010
Persona Signs Llc
Active
License #1122510
C-45
Watertown, CA
Est. 2024
License #1123974
C-32, D06 +1 more
Watertown, CA
Est. 2024
Ocean Air Hvac
Active
License #1138032
C-20
Watertown, CA
Est. 2025
Socomec Inc
Active
License #1147257
C-10
Watertown, CA
Est. 2025