Plumbing businesses in California
As of October 29, 2026, DealFlow OS tracks 5,776 plumbing businesses in California, compared with 11,334 establishments with paid employees in the U.S. Census Bureau's 2022 County Business Patterns.
Updated
Plumbing businesses
5,776
With a website
77%
With a phone number
99%
Build the California plumbing list
Open the Deal Finder with Plumbing and California prefilled — same 5,776 count, phone and website on every row.
Top cities
- 1.Los Angeles285
- 2.San Diego219
- 3.San Jose154
- 4.San Francisco99
- 5.Sacramento94
- 6.Riverside91
- 7.Anaheim81
- 8.Bakersfield70
Compared with the Census
- DealFlow OS (October 29, 2026)
- 5,776
- Census CBP 2022 (NAICS 238220)
- 11,334
NAICS 238220: Plumbing, heating, and air-conditioning contractors. NAICS 238220 combines plumbing and HVAC contractors, so the Census figure covers both trades.
Source: U.S. Census Bureau, County Business Patterns 2022 — excludes sole proprietors (non-employer businesses).
Frequently asked questions
How many plumbing businesses are there in California?
As of October 29, 2026, DealFlow OS tracks 5,776 plumbing businesses in California, compared with 11,334 establishments with paid employees in the U.S. Census Bureau's 2022 County Business Patterns. Source: U.S. Census Bureau, County Business Patterns 2022 — excludes sole proprietors (non-employer businesses).
What share of plumbing businesses in California have a website or phone number?
77% of the 5,776 plumbing businesses DealFlow OS tracks in California list a website and 99% list a phone number.
Which cities in California have the most plumbing businesses?
Los Angeles (285), San Diego (219), San Jose (154) lead the state.
Why is the DealFlow OS count different from the Census number?
County Business Patterns counts establishments with paid employees and excludes sole proprietors (non-employer businesses). DealFlow OS counts plumbing businesses found in public business listings, including owner-operators without employees. NAICS 238220 combines plumbing and HVAC contractors, so the Census figure covers both trades.
How do I get a list of plumbing businesses in California?
Open the Deal Finder with Plumbing and California prefilled to see the same 5,776 count, preview the rows, and export the list with phone numbers and websites.
Plumbing in other states
Other industries in California
Thinking about buying one? How to acquire a plumbing business · Plumbing by state