How to hire an emergency plumber in Seattle

Who you can pay to do plumbing

Public Health Seattle & King County says that if you pay for plumbing, the installer must be a certified journeyman plumber and a registered contractor or an employee of one. You can do plumbing on your own home, with unpaid help from friends or family. (King County) The County issues plumbing and gas piping permits for Seattle and unincorporated King County. (permits)

How to check

1. Ask for the plumbing contractor license number and look it up on L&I Verify.
2. Ask the plumber at the door to show their L&I certificate card. Washington requires them to carry it with photo ID. (RCW 18.106.020)
3. For gas lines or water heaters, ask whether the job needs a permit and who will pull it.

Questions worth asking

1. How do you price the visit, and is there a charge to come out?
2. Do you charge more after hours, and when does that start?
3. If the problem is the side sewer, do you do that work, and who handles the SPU permit?
4. Will I get the price in writing before you start?

Red flags

• No certificate card, or a name that does not match Verify.
• Asking you to pull the permit yourself. (L&I)
• A big cash deposit for a same-day repair.
• A crew that will only come on weekends or after hours for planned work. (L&I)

Cost

We found no Seattle survey of emergency plumbing prices, so we don't print one. Before anyone comes out, ask whether they charge by the hour or a flat rate, whether there is a charge to come out, and whether nights cost more.

A WA plumbing contractor license badge on a listing here means we matched that business by phone and name to an active record in L&I contractor license data on October 17, 2026. Records change. Run the lookup yourself before work starts.