Licensed Contractors in Castro Valley, California

All license data is sourced from the California Contractors State License Board (CSLB). Last data update: May 24, 2026.

Contractors by Trade

Building (274)
Painting (60)
Electrical (56)
Plumbing (27)
Landscaping (24)
Limited (22)
Roofing (17)
HVAC (14)
Earthwork (12)
Fire (9)
Welding (5)
Solar (3)
Various Energy Active
License #1145723 A, B +2 more Castro Valley, CA Est. 2025
Your Carpenter Friend Active
License #1145911 C-5 Castro Valley, CA Est. 2025
Top Tier Building Services Inc Active
License #1146790 B Castro Valley, CA Est. 2025
Source Energy Llc Active
License #1147405 C-10 Castro Valley, CA Est. 2025
Osman Construction Inc Active
License #1149250 B Castro Valley, CA Est. 2026
Brandon Choi Construction Active
License #1150927 B Castro Valley, CA Est. 2026
Electrical Ministries Active
License #1151302 C-10 Castro Valley, CA Est. 2026
Atb Construction Active
License #1151339 B Castro Valley, CA Est. 2026
Bluewave Plumbing And Water Heaters Llc Active
License #1151565 C-36 Castro Valley, CA Est. 2026
Mota Painting Active
License #1152210 C-33 Castro Valley, CA Est. 2026
A-1 Contracting Llc Active
License #1154993 A Castro Valley, CA Est. 2026
Villa Alta Construction Inc Active
License #1155358 B Castro Valley, CA Est. 2026
Key One Construction Inc Active
License #1155498 B Castro Valley, CA Est. 2026
C W Electric Active
License #1155572 C-10 Castro Valley, CA Est. 2026
Long'S Concrete Suspended
License #495230 C-8 Castro Valley, CA Est. 1986
Full Spectrum Enterprises Suspended
License #841155 C-33 Castro Valley, CA Est. 2004
F B Development Suspended
License #859640 B Castro Valley, CA Est. 2005
Hector'S Construction Company Inc Suspended
License #871808 B Castro Valley, CA Est. 2006
A-1 Construction General Engineering Inc Suspended
License #944217 A, B Castro Valley, CA Est. 2010
Duarte & Sons Construction & Painting Suspended
License #959065 B, C-33 Castro Valley, CA Est. 2011
Patio Covers Universe & Awnings Suspended
License #996512 D03 Castro Valley, CA Est. 2014
Hamilton Exteriors Suspended
License #1078806 B, C-10 +3 more Castro Valley, CA Est. 2021
Zeek'S Discount Glass Inc Suspended
License #1086133 C-17 Castro Valley, CA Est. 2022
Eden Concrete Contractors Suspended
License #1108674 C-8 Castro Valley, CA Est. 2023
Vcone Inc Suspended
License #1127365 B Castro Valley, CA Est. 2024
Kassell Electrical Services Llc Suspended
License #1134991 C-10 Castro Valley, CA Est. 2025

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Licensing Resources

How to verify a contractor license
Deposit and payment rules for California contracts
Home improvement contract requirements

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