Plumbing contractor (C-36) in Hayward, CA

13 licenses · checked Oct 27, 2026

There are 13 Plumbing contractor (C-36) licenses with an address of record in Hayward, CA, in the CSLB License Master data checked Oct 27, 2026. That is 0.5% of the 2,617 such licenses statewide; Hayward ranks #34 of 514 CA cities for this license type. They are spread across 5 ZIP codes; the most common are 94545 (4), 94544 (4), 94541 (3). Most list Alameda County. By business type: Corporation 6, Sole Owner 5, Partnership 1, Limited Liability 1. The median first-issue year is 2018; the oldest license dates from 2015. 5 of them come up for renewal or expiration in the next 12 months, so re-check status before you sign a contract.

What a Plumbing contractor (C-36) license covers

Plumbing (C-36) covers systems that supply safe water and remove liquid and water-borne waste, including water heaters, fixtures, gas piping, drain lines and backflow devices.

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.

Plumbing contractor (C-36) licenses in Hayward

Showing 13 of 13, A to Z. Listing order is alphabetical, not a recommendation.

Frequently asked questions

How many Plumbing contractor (C-36) licenses are in Hayward?

13 active licenses in the CSLB License Master data checked Oct 27, 2026 (0.5% of CA).

What does a Plumbing contractor (C-36) license cover?

Plumbing (C-36) covers systems that supply safe water and remove liquid and water-borne waste, including water heaters, fixtures, gas piping, drain lines and backflow devices.

How do I verify a Plumbing contractor (C-36) license in Hayward?

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 Hayward Plumbing contractor (C-36) licenses expire soon?

5 of 13 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 Hayward

General building contractor (88) · Electrical contractor (C-10) (21) · Painting contractor (C-33) (18) · Landscaping contractor (C-27) (16) · Tile contractor (C-54) (15) · General engineering contractor (9) · HVAC contractor (C-20) (9) · Flooring contractor (C-15) (7) · Concrete contractor (C-8) (5) · Low-voltage contractor (C-7) (5) · Cabinet and finish carpentry contractor (C-6) (5) · Glazing contractor (C-17) (5)

All Plumbing contractor (C-36) licenses in CA →

Source: CSLB License Master. Licensed California is independent and not affiliated with the licensing agency. Data checked Oct 27, 2026.