Licensed Contractors in Duncan, California

Duncan has 7 licensed contractors registered with the California Contractors State License Board across 5 trade classifications. The most common specialties are Low Voltage Systems Contractor (2), Electrical Contractor (2), Boiler, Hot-Water Heating and Steam Fitting Contractor (1). 3 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 (2) A: General Engineering Contractor (1)

Specialty Contractors

Tei Construction Services Inc Active
License #710965 C-4 Duncan, CA Est. 1995
Ellsworth Electric Inc Active
License #748928 C-10 Duncan, CA Est. 1998
Frederick Jackson Robinette Active
License #758936 B Duncan, CA Est. 1999
Jett Solutions Llc Active
License #985165 C-10 Duncan, CA Est. 2013
I T C Service Group Acquisition Llc Active
License #1017954 A, C-7 Duncan, CA Est. 2016
Afl Enterprise Cable Services Active
License #1056327 C-7 Duncan, CA Est. 2019
Das Group Professionals Llc Active
License #1130062 B Duncan, CA Est. 2024

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