— License and registration records · Check current status
Washington Plumber List
541 records in our covered Washington sources. Snapshot refreshed 2026-09-02. Build a roster for your territory, with phone and email where available. Credential requirements vary by trade and locality; review the state guidance below.
Why verification matters
For a leak repair or water-heater replacement, ask what is included, who will perform regulated work and how hidden damage will be handled. Confirm credentials and permits for your jurisdiction.
Projects for plumbers
For businesses
Buy the plumbers list in Washington, by territory
Public-source records for the selected trade and territory, enriched with phone, email and website where available. Review coverage and filters before buying. Draw your territory and pay for what you draw. Or build a list in two minutes →
Radius
StatewideSources and limits
Where this list comes from
Our Washington roster uses covered records from Washington L&I Open Data. A current source check is still needed. Counts describe records in that snapshot, not every business operating in the state.
A license or registration record is a starting point. Credential types and scope differ by jurisdiction; a listing does not establish today's status or authorization for every type of work.
Before hiring, match the business and credential number with the relevant authority, check scope and current status, and confirm local permits. Contacts and Google ratings, when present, are separate enrichment rather than licensing evidence.
Data sources and quality standards →Why ContractorRoster
Public records, organized for your territory.
Find plumbers for leak and burst-pipe repair, water heater replacement, and related work. Choose your territory and review available contacts before buying. Check the source credential and project scope before hiring.
Washington: credentials and scope
Washington L&I registers general and specialty construction contractors. Registration is distinct from the separate licensing or certification requirements for trades such as electrical and plumbing work.
L&I's registration requirements specify a $30,000 general-contractor bond or $15,000 specialty bond. Liability insurance is $200,000 public liability plus $50,000 property damage, or a $250,000 combined single limit; the page does not give specialty contractors a lower insurance minimum.
Example: For an electrical installation, check the electrical credential and relevant permit requirements rather than relying on a general contractor registration alone.
Separate contractor registration from the regulated trade work
- Find the L&I registration in the same business name as the proposal. Read whether it is general or specialty registration and review the displayed bond and insurance information without treating it as a coverage opinion.
- Ask who will undertake any electrical or plumbing work. Check those credentials separately; a general registration number is not the answer to an electrical or plumbing licensing question.
- Request current insurance evidence for the business and discuss the proposed job with the insurer. A required bond amount is neither an insurance policy nor a promise that every customer can recover that amount.
Example: a kitchen remodeler supplies an L&I registration but has not named the electrician. Keep the electrical portion open on your checklist and request that subcontractor’s credential before treating the project team as checked.
Scope guidance reviewed 2026-09-23. Recheck the official record before hiring.
Use cases
- ✓Sourcing licensed plumbing subs for a project in an unfamiliar market
- ✓Pulling a complete licensed-only call sheet for a manufacturer launch
- ✓Backfilling vendor coverage when your usual plumber can't take the job
- ✓Quoting bidders for a multi-property rehab across several cities
Top cities for plumbers in Washington
541 records in our Washington plumbers snapshot, with contact fields where available. See the full Washington map →
Other trades in Washington
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- All contractors in Washington →
Plumbers in other states
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- Plumbers in Maine
- Plumbers in Tennessee
- Plumbers in Montana
- Plumbers in Delaware
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- All plumbers nationwide →
Common questions about plumbers in Washington
How do I research plumbers in Washington?
Start with the authority for the trade and project locality. Match the exact business and credential number, check current status and scope, then ask about local permits, insurance and comparable work. A directory listing or rating does not complete those checks.
How many plumbers does the Washington roster cover?
Our snapshot contains 541 records in this category. Records are not necessarily unique companies, and source coverage is not a census of every business in the state.
Where does this data come from?
Covered records come from Washington L&I Open Data. License and registration types differ; check the credential that applies to your project. Contacts and ratings are separate enrichment where available.
What contact information is included?
Available fields can include phone, email, website and Google ratings. Availability varies by record and selection; an unavailable field is not a zero, closure or negative finding. Review the selected inventory before purchase.
What will my list cost and when will it arrive?
The current purchase flow shows the price for your selected territory and filters before checkout. Larger website orders are typically delivered within one business day. Custom research scope and delivery timing are agreed before purchase.
Does this list establish current license status?
No. The recorded source refresh date is 2026-09-02. This is a snapshot rather than a live-status guarantee. Verify the appropriate official record before hiring.
From $19. Pay for what you draw
Draw your territory on the map; the price follows the size of the list. Pay once. Larger website orders typically arrive within one business day. No subscription, no account.