Plumbing contractor (C-36) in San Francisco, CA

63 licenses · checked Oct 27, 2026

There are 63 Plumbing contractor (C-36) licenses with an address of record in San Francisco, CA, in the CSLB License Master data checked Oct 27, 2026. That is 2.4% of the 2,617 such licenses statewide; San Francisco ranks #4 of 514 CA cities for this license type. They are spread across 20 ZIP codes; the most common are 94112 (11), 94124 (10), 94134 (6). Most list San Francisco County. By business type: Corporation 41, Sole Owner 19, Partnership 2, Limited Liability 1. The median first-issue year is 2017; the oldest license dates from 2015. 36 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 San Francisco

Showing 60 of 63, A to Z. Listing order is alphabetical, not a recommendation.

Showing the first 60; search by name or license number for the rest.

Frequently asked questions

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

63 active licenses in the CSLB License Master data checked Oct 27, 2026 (2.4% 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 San Francisco?

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 San Francisco Plumbing contractor (C-36) licenses expire soon?

36 of 63 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 San Francisco

General building contractor (324) · Electrical contractor (C-10) (57) · Painting contractor (C-33) (49) · General engineering contractor (41) · Landscaping contractor (C-27) (18) · Roofing contractor (C-39) (17) · Flooring contractor (C-15) (12) · Tile contractor (C-54) (12) · Glazing contractor (C-17) (10) · HVAC contractor (C-20) (9) · Low-voltage contractor (C-7) (8) · Fire protection contractor (C-16) (7)

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.