Washington Licensed Plumbing Contractors
U.S. · 2,442 locations
There are 2,442 Washington Licensed Plumbing Contractors as of October 2026. They are in 23 states. Washington has the most, with 2,229.
This is the complete licensed universe of plumbing contractors in Washington, not a directory of the ones who chose to be listed: every active license the Washington Department of Labor and Industries publishes in its public extract, reduced to one row per licensed firm or individual at an address.
More about this list
2,442 records. 2,442 records carry a separate business name from the licensed individual. Classifications in the file: PLUMBING CONTRACTOR / JOURNEY LEVEL (1,443), PLUMBING CONTRACTOR / RESIDENTIAL (583), CONSTRUCTION CONTRACTOR / Sanitation System / Side sewers (114), ELECTRICAL CONTRACTOR / PUMP & IRRIGATION (94). 205 licensees list an out-of-state address (contractors licensed in Washington 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
By state
These states add up to 2,432 of the 2,442 locations.
Over time
| File built | Locations |
|---|---|
| September 15, 2026 | 2,432 |
| September 20, 2026 | 2,431 |
| September 27, 2026 | 2,432 |
| October 11, 2026 | 2,448 |
| October 18, 2026 | 2,442 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| VIKING PLUMBING & ROOTER, LLC | 4438 ISLAND COURT | Orange Beach | AL | 36561 | (253) 332-4692 | ROSS, MATTHEW JOSEPH | VIKINPR783BQ | PLUMBING CONTRACTOR / JOURNEY LEVEL | plumbing | ACTIVE | 2028-10-24 | Baldwin County | address | 01003 | complete | US | https://data.wa.gov/api/views/m8qx-ubtq/rows.csv?accessType=DOWNLOAD | 30.290936 | -87.507172 | ||
| HOME DEPOT U.S.A., INC. | P O Box 105451, Attn: License Management | Atlanta | GA | 30348 | (770) 433-8211 | Deaton, John Andrew | HOMEDDU785NU | PLUMBING CONTRACTOR / JOURNEY LEVEL | plumbing | ACTIVE | 2028-08-24 | Fulton County | city_centroid | 13121 | po_box | US | https://data.wa.gov/api/views/m8qx-ubtq/rows.csv?accessType=DOWNLOAD | 33.762909 | -84.422675 | ||
| LC MECHANICAL INC | 147 HYACINTH ST | Fall River | MA | 02720 | (508) 328-4192 | Couto, Laurenio Melo | LCMECMI744MU | PLUMBING CONTRACTOR / JOURNEY LEVEL | plumbing | ACTIVE | 2028-07-31 | Bristol County | address | 25005 | complete | US | https://data.wa.gov/api/views/m8qx-ubtq/rows.csv?accessType=DOWNLOAD | 41.702790 | -71.122195 | ||
| RENUITY | 1001 Tuckaseegee Road Suite 100 | Charlotte | NC | 28208 | (608) 716-7900 | MYERS, LUCAS JAMES | RENUI**752O6 | PLUMBING CONTRACTOR / JOURNEY LEVEL | plumbing | ACTIVE | 2027-10-28 | Mecklenburg County | address | 37119 | complete | US | https://data.wa.gov/api/views/m8qx-ubtq/rows.csv?accessType=DOWNLOAD | 35.236509 | -80.871862 | ||
| BLACK DIAMOND PLUMBING INC | P.O BOX 261 | Beavercreek | OR | 97004 | (503) 310-3665 | CRONE, GABE JENE | BLACKDP763QM | PLUMBING CONTRACTOR / JOURNEY LEVEL | plumbing | ACTIVE | 2026-12-02 | Clackamas County | zip_centroid | 41005 | po_box | US | https://data.wa.gov/api/views/m8qx-ubtq/rows.csv?accessType=DOWNLOAD | 45.254962 | -122.449377 |
{}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 | 100% |
| longitude | Longitude | 100% |
| geo_ | How exact the map point is: the source's own point, the street address, or the ZIP code's centre | 100% |
| county_ | Five-digit federal code of that county | 100% |
| county_ | How the county was found, where it was not given by the source | 13% |
| address_ | Whether the street address is complete, missing a house number, or a PO box | 100% |
| zip4 | Zip4 | 3% |
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 Washington Licensed Plumbing Contractors and give it this page: it can open https://locationlists.com/find?dataset=washington-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=washington-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 Washington Licensed Plumbing Contractors list.Your assistant will walk you through setup and show you the price before you pay.
For developers
At 2,442 records this dataset is not sold by the row — buy the file. Without a connector, open https://locationlists.com/find?dataset=washington-plumbing-contractor-list. An agent connected to https://locationlists.com/mcp can still search it, read a free sample file of up to 10 rows and buy the whole file itself. How agent purchasing works
?Frequently Asked Questions
How many Washington Licensed Plumbing Contractors are there?
There are 2,442 Washington Licensed Plumbing Contractors as of October 2026. They are in 23 states. Washington has the most, with 2,229.
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 Washington?
Contractors can hold a Washington license while being based in another state, common near state lines and for national firms. They are real Washington licensees, so they are included, and the state column makes them a one-filter exclusion if you only want in-state locations.