California Licensed Plumbing Contractors
U.S. · 15,934 locations
There are 15,934 California Licensed Plumbing Contractors as of October 2026. They are in 34 states.
This is the complete licensed universe of plumbing contractors in California, not a directory of the ones who chose to be listed: every active license the California Contractors State License Board publishes in its public extract, reduced to one row per licensed firm or individual at an address.
More about this list
15,934 records. Classifications in the file: C36 (10,544), B | C36 (1,414), B | C10 | C36 (432), C42 (192). 237 licensees list an out-of-state address (contractors licensed in California but based elsewhere); the state column identifies them so they are one filter to drop. Each record carries the state license number, so it joins cleanly to permit data, insurance certificates and other state files, and the expiration date, so you can target renewals. Buyers use it for distributor and manufacturer territory planning, dealer-program recruitment, insurance and financing prospecting, and roll-up sourcing in a fragmented trade. Association lists such as our ACCA member dataset cover the engaged slice; this covers everyone the state allows to pull a permit. Refreshed weekly from the board's extract.
#Count report
Over time
| File built | Locations |
|---|---|
| September 15, 2026 | 14,951 |
| October 11, 2026 | 15,869 |
| October 18, 2026 | 15,934 |
Need just some of them? Ask in your own words.
●Where the rows are
≡Sample Data Preview
| name | address | city | state | zip | phone | licensee name | license number | license type | trade | status | expires | county | geo precision | county fips | county note | address quality | zip4 | country | source url | latitude | longitude |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| JEFF SACKNIEVICH PLUMBING | 30 CREEKSTONE DRIVE | Sylacauga | AL | 35151 | (256) 553-8070 | JEFF SACKNIEVICH PLUMBING | 1141500 | C36 | plumbing | CLEAR | 2027-08-31 | Talladega County | address | 01121 | complete | US | https://www.cslb.ca.gov/OnlineServices/DataPortal/ListByClassification | 33.131450 | -86.254607 | ||
| ACME CRYOGENICS INC | 5222 BALL GROUND HIGHWAY | Ball Ground | GA | 30107 | (484) 538-6202 | ACME CRYOGENICS INC | 1050869 | C36 | plumbing | CLEAR | 2027-03-31 | Cherokee County | address | 13057 | complete | US | https://www.cslb.ca.gov/OnlineServices/DataPortal/ListByClassification | 34.289930 | -84.307438 | ||
| PROCESS COOLING SYSTEMS INC | 800 RESEARCH DRIVE | Leominster | MA | 01453 | (978) 537-1996 | PROCESS COOLING SYSTEMS INC | 938649 | C36 | plumbing | CLEAR | 2027-10-31 | Worcester County | address | 25027 | complete | US | https://www.cslb.ca.gov/OnlineServices/DataPortal/ListByClassification | 42.481316 | -71.757342 | ||
| KIEWIT INFRASTRUCTURE WEST CO | 1550 MIKE FAHEY STREET | Omaha | NE | 68102 | (707) 439-7300 | KIEWIT INFRASTRUCTURE WEST CO | 433176 | A | B | C10 | C31 | C36 | HAZ | plumbing | CLEAR | 2027-01-31 | Douglas County | zip_centroid | 31055 | complete | US | https://www.cslb.ca.gov/OnlineServices/DataPortal/ListByClassification | 41.261541 | -95.932530 | ||
| STRONG BEACH PLUMBING | 413 PLAMONDON DR | Simpsonville | SC | 29680 | (562) 415-6866 | STRONG BEACH PLUMBING | 1046529 | C36 | plumbing | CLEAR | 2026-11-30 | Greenville County | address | 45045 | complete | US | https://www.cslb.ca.gov/OnlineServices/DataPortal/ListByClassification | 34.708253 | -82.301643 |
{}What's in each row
| Field | What it is | Rows filled |
|---|---|---|
| name | Business name where the board publishes one, otherwise the licensee | 100% |
| licensee | Licensed individual (qualifier) | 100% |
| license | State license number | 100% |
| license | License classification as the board labels it | 100% |
| trade | hvac / plumbing / electrical / roofing / general | 100% |
| status | License status where published | 100% |
| expires | License expiration date | 100% |
| address | Address on file with the board | 100% |
| city | City | 100% |
| state | Two-letter state code of the address (out-of-state licensees keep their own) | 100% |
| zip | ZIP code | 100% |
| country | US | 100% |
| phone | Phone where the board publishes one | 100% |
| county | County where the board publishes one | 100% |
| source | The board's public extract this row came from | 100% |
| latitude | Latitude | 99% |
| longitude | Longitude | 99% |
| geo_ | How exact the map point is: the source's own point, the street address, or the ZIP code's centre | 99% |
| county_ | Five-digit federal code of that county | 100% |
| county_ | How the county was found, where it was not given by the source | 8% |
| address_ | Whether the street address is complete, missing a house number, or a PO box | 100% |
| zip4 | Zip4 | 1% |
Rows filled is measured on every row of the delivered file.
✓Where this data comes from
Each row names the public source it came from, so any record can be checked against where it was published.
October 18, 2026
File built · Rebuilt weekly on an automatic schedule.
22 fields
Columns in the file
Fill measured
On every row of the delivered file
How we build and date every file: methodology.
Using ChatGPT, Claude or an API?
No setup needed. Ask ChatGPT or Claude your question about the California Licensed Plumbing Contractors and give it this page: it can open https://locationlists.com/find?dataset=california-plumbing-contractor-list with the filters you need and show you the count and price.
Using ChatGPT or Claude? Tell it to answer from locationlists.com/find — no account, no connector.
How assistants ask
No connector needed. Any AI assistant can answer from this site with a web link, no connector, no account: open https://locationlists.com/find with the question as query parameters.
If a question needs filtering, distance, drive time, combining lists or a price, open a /find link: either put the question itself in q=, or build the structured link. The answer does not need an API, a connector or an account.
Simplest, the question itself: https://locationlists.com/find?q=<the question in plain words>
Or set the parts yourself: https://locationlists.com/find?dataset=<slug>&state=<ST>&city=<city>&county=<county>&zip=<zip>&near=<place or zip>&radius=<miles>&drive=<minutes>&where=<column>:<op>:<value>&total=<rows>
Leave out what the question does not need. Use radius for straight-line miles or drive for minutes of driving (5 to 60), not both; near can name several places separated by | to reach from any of them. To ask about several lists at once, use datasets with two or more names, or category with a kind of business. To compare two lists, add relate=nearest and the other list with b. in front of its parameters. To count by area, use areas=county (or zip, state, metro). To keep only places whose county, ZIP code, metro area or state meets a Census figure, add area_where (for example county:population>1000000); with areas, per=100000 gives counts per 100,000 residents.
Links an assistant can open, each showing how many rows match, a few preview rows and the price for just that part:
- The whole list: add a city, state, ZIP code or distance:
https://locationlists.com/find?dataset=california-plumbing-contractor-list
Optional: connect for repeat use or wallet payments:
Read https://locationlists.com/skill.md and follow the instructions to connect LocationLists. Then show me the California Licensed Plumbing Contractors list.Your assistant will walk you through setup and show you the price before you pay.
For developers
Every step below has a no-connector equivalent: https://locationlists.com/find?dataset=california-plumbing-contractor-list with the same filters as query parameters.
- Connect your agent to
https://locationlists.com/mcp(no key, no signup). - Call
count_locationswithdataset: "california-plumbing-contractor-list"and any filter — it is free, and returns how many rows match and what they cost. - Fetch the rows with
query_locations: $0.67 per 100 rows from this dataset. Above 7,967 rows, buying the whole file is cheaper.
Paid in USDC over x402 — the agent gets an HTTP 402 with the exact price, signs, and retries. Money moves only after rows are delivered, so a failed or empty query costs nothing. Setup for Claude, Cursor and VS Code
?Frequently Asked Questions
How many California Licensed Plumbing Contractors are there?
There are 15,934 California Licensed Plumbing Contractors as of October 2026. They are in 34 states.
Is this the same as the state's license lookup?
It is the same underlying data, taken from the board's bulk public extract rather than one-at-a-time lookups, and reshaped to one row per licensed firm or individual at an address with a trade column and a certified/registered class. The lookup shows one license at a time; this is all of them in one file, refreshed weekly.
Does every record have a phone number and a business name?
Only where the board publishes them. State boards license the qualifying individual, and many file an individual name and address rather than a company name. The name column uses the business name when one is on file and the licensee otherwise; licenseeName always carries the individual. Phone is present only for boards that publish it.
Why are some addresses outside California?
Contractors can hold a California license while being based in another state, common near state lines and for national firms. They are real California licensees, so they are included, and the state column makes them a one-filter exclusion if you only want in-state locations.