Licensed Contractors in Saint Louis, California

Saint Louis has 14 licensed contractors registered with the California Contractors State License Board across 8 trade classifications. The most common specialties are Low Voltage Systems Contractor (1), Ornamental Metal Contractor (1), Electrical Contractor (1). 12 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 (9) A: General Engineering Contractor (3)

Specialty Contractors

Interface Systems Active
License #469046 C-10 Saint Louis, CA Est. 1985
Utility Service & Maintenance Inc Active
License #533055 C-33 Saint Louis, CA Est. 1988
Clayco Inc Dba Clayco Construction Company Inc Active
License #714136 B Saint Louis, CA Est. 1995
Penta Industrial Corporation Active
License #837549 B Saint Louis, CA Est. 2004
M C Industrial Inc Active
License #932833 C-46 Saint Louis, CA Est. 2009
Concrete Strategies Llc Active
License #994789 C-8 Saint Louis, CA Est. 2014
Superior Building Group Ca Lp Active
License #1017955 B Saint Louis, CA Est. 2016
Ascent Llc Active
License #1029202 B Saint Louis, CA Est. 2017
Mccarthy-Clark A Joint Venture Active
License #1073639 A, B Saint Louis, CA Est. 2021
Mccarthy / Cdm Smith Active
License #1083638 A, B Saint Louis, CA Est. 2021
Mccarthy - Jacobs A Joint Venture Active
License #1110805 A, B Saint Louis, CA Est. 2023
Arco National Pacific Coast Llc Active
License #1115241 B Saint Louis, CA Est. 2024
Telecom Technology Services Incorporated Active
License #1118255 B, C-7 Saint Louis, CA Est. 2024
Troco Fab Balconies & Railings Active
License #1143869 C-23 Saint Louis, CA Est. 2025

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