Plumbing contractor (C-36) in Riverside, CA

39 licenses · checked Oct 27, 2026

There are 39 Plumbing contractor (C-36) licenses with an address of record in Riverside, CA, in the CSLB License Master data checked Oct 27, 2026. That is 1.5% of the 2,617 such licenses statewide; Riverside ranks #5 of 514 CA cities for this license type. They are spread across 9 ZIP codes; the most common are 92503 (9), 92507 (7), 92505 (5). Most list Riverside County. By business type: Corporation 22, Sole Owner 16, Limited Liability 1. The median first-issue year is 2017; the oldest license dates from 2015. 16 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 Riverside

Showing 39 of 39, A to Z. Listing order is alphabetical, not a recommendation.

Frequently asked questions

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

39 active licenses in the CSLB License Master data checked Oct 27, 2026 (1.5% 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 Riverside?

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

16 of 39 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 Riverside

General building contractor (178) · Electrical contractor (C-10) (66) · HVAC contractor (C-20) (35) · Painting contractor (C-33) (27) · General engineering contractor (25) · Landscaping contractor (C-27) (25) · Flooring contractor (C-15) (19) · Tile contractor (C-54) (16) · Concrete contractor (C-8) (16) · Cabinet and finish carpentry contractor (C-6) (13) · Swimming pool contractor (C-53) (12) · Roofing contractor (C-39) (12)

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.