Electrical contractor (C-10) in Castro Valley, CA
7 licenses · checked Oct 27, 2026
There are 7 Electrical contractor (C-10) licenses with an address of record in Castro Valley, CA, in the CSLB License Master data checked Oct 27, 2026. That is 0.2% of the 3,983 such licenses statewide; Castro Valley ranks #160 of 620 CA cities for this license type. Most list Alameda County. By business type: Corporation 5, Partnership 1, Sole Owner 1. The median first-issue year is 2017; the oldest license dates from 2015. 4 of them come up for renewal or expiration in the next 12 months, so re-check status before you sign a contract.
What a Electrical contractor (C-10) license covers
Electrical (C-10) covers placing, installing, erecting or connecting electrical wires, fixtures, appliances, conduits and apparatus that generate, transmit or use electrical energy, including service panels and solar photovoltaic wiring.
How to verify a license
Enter the license number in CSLB Instant License Check and confirm the status is active, the classification matches the work, and the contractor has a current bond and workers' compensation coverage (or a valid exemption). California requires the license number on contracts and advertising. Official lookup: CSLB Instant License Check.
Electrical contractor (C-10) licenses in Castro Valley
Showing 7 of 7, A to Z. Listing order is alphabetical, not a recommendation.
- Buchmann INC#1004484 · 94546
- Cota Electric INC#1029993 · 94546
- Electric AC DC#1065330 · 94546
- G R V Homeimprovement#1025118 · 94546
- L E Electric INC#1063050 · 94546
- T V R Electric INC#1026571 · 94546
- Voltron Electric INC#1030181 · 94546
Frequently asked questions
How many Electrical contractor (C-10) licenses are in Castro Valley?
7 active licenses in the CSLB License Master data checked Oct 27, 2026 (0.2% of CA).
What does a Electrical contractor (C-10) license cover?
Electrical (C-10) covers placing, installing, erecting or connecting electrical wires, fixtures, appliances, conduits and apparatus that generate, transmit or use electrical energy, including service panels and solar photovoltaic wiring.
How do I verify a Electrical contractor (C-10) license in Castro Valley?
Enter the license number in CSLB Instant License Check and confirm the status is active, the classification matches the work, and the contractor has a current bond and workers' compensation coverage (or a valid exemption). California requires the license number on contracts and advertising. Use the license number shown here with the CSLB Instant License Check.
How many Castro Valley Electrical contractor (C-10) licenses expire soon?
4 of 7 have an expiration date in the next 12 months. A license that lapses must be renewed before the holder can work under it again.
Other license types in Castro Valley
General building contractor (32) · Plumbing contractor (C-36) (5) · Landscaping contractor (C-27) (5) · Painting contractor (C-33) (4) · General engineering contractor (3) · Roofing contractor (C-39) (3)
All Electrical contractor (C-10) licenses in CA →
Source: CSLB License Master. Licensed California is independent and not affiliated with the licensing agency. Data checked Oct 27, 2026.