skip to main content

How to find us

Phone: 206-296-4600
TTY Relay: 711

Toll-free: 800-325-6165

Click here to email us

Instructions to submit a Public Records Request

Plumbing and gas piping offices

SEATTLE

Environmental Health Services
401 5th Avenue, Suite 1100 [ MAP ]
Seattle, WA 98104

Phone: 206- 296-1175
Fax: 206-296-0189

  • Inspection request line: 206-205-0935

  • Permit hours:
    • Monday - Friday: 8:00 AM to 4:30 PM
    • NOTE: The counter is closed daily from 12:00 pm to 1:00 pm for lunch
BLACK RIVER (RENTON)

900 Oakesdale Ave. SW, Suite 100 [ MAP ]
Renton, WA 98057

Phone: 206-296-4932
Fax: 206-296-4919

  • Inspection request line is 206-205-0935
  • Permit hours are 7:00 am to 5:00 pm, on Monday, Tuesday and Wednesday and 9:00 am to 5:00 pm on Thursday.
See full Plumbing and Gas Piping staff directory and King County inspection areas

Applications, permits and inspections

How do I get a Homeowner's Plumbing Permit?
Downloadable permit applications
Plumbing and gas piping service fees

Plumbing codes and related information

How do I get a Homeowner's Plumbing Permit?
Where to get a copy of the Code
Guidelines and policies for contractors, installers and interested persons
Installing waste and vent pipes and fittings
Drainage and venting fixture unit values
Installing your new water heater
Waste discharge (diagrams)
Installing your new waterline
Water supply fixture units (WSFU) and minimum fixture Branch pipe sizes
Styles of pipe fittings

Gas piping codes and related information

Where to get a copy of the Code
Guidelines and policies for contractors, installers and interested persons
Installing your new water heater
Installing gas piping