Plumbing and gas piping
Permits, inspections, plan review and codes
Important notifications
Subscribe to our new P&G Newsletter which will provide information to help industry develop accurate construction schedules. The P&G Newsletter will also provide updates on resources or guidance to industry around code and plan submission processes.
The Newsletter will be sent via email about once a month and will be posted to our website. Subscribers can unsubscribe at any time. If you have anything you would like to share with P&G Program about the P&G Newsletter or its content, please submit your comment.
If you would like to email us through our general email address, please contact us at plumbingandgaspiping_feedback@kingcounty.gov
Due to rapid construction growth and rebound of business, we are experiencing high volumes of plumbing plan submittals with first review comments at approximately 18 to 20 weeks. The allowance to request "Expedited Plan Review" is no longer in effect.
Effective March 22, 2021: A plumbing permit, gas piping permit, and backflow device permit shall be obtained for each townhome (single family home) that is constructed under one building (roof). Download the related memorandum for details (PDF).
Many buildings are closed to the public or have limited access in order to help slow the spread of COVID-19. To prevent Legionella growth, these systems must be actively managed and maintained. See information and guidance to reduce Legionella growth and other pathogen and corrosion concerns that occur when there is a large drop in building water use.
Use the Online Services Portal to purchase plumbing, backflow assemblies, gas piping, medical gas permits and plan review submittals.
Inspection request phone number: 206-205-0935
All inspection requests for plumbing, gas piping, backflow assemblies, and medical gas piping shall be performed through our Integrated Voice Response (IVR) system. An inspection request for different permits on a project shall be independently requested throught the IVR to receive an inspection for those permits.
- A "same day" inspection shall be requested prior to 6:00 am that day.
- An inspection request is not a "scheduled inspection". Inspectors will call the morning of the requested day to confirm when the inspection will be performed.
- Inspections are not guaranteed to be performed on the day requested.
- Inspections are not scheduled for a specific time of the day. The assigned inspector may provide a time frame given their assigned inspections.
- Inspections are not guaranteed to be performed on the day requested.
- Inspections can be canceled through the IVR when submitted by 5:55 am the day of. If a cancelation is needed after 6:00 am, inform the inspector when they call or call one of the senior inspectors.
- Please be prepared to answer the callback number between 6:30 am to 8:00 am.
- Check for any messages during this time
- Make sure the voicemail is active (not full)
- Check for any messages during this time
- Virtual inspections (effective March 5, 2021)
The Plumbing and Gas piping program is introducing Virtual Inspections for specific types of inspections on a "trial" basis. Please read the guidelines below. If you qualify, submit the completed request form. - Contact your inspector
- View inspection results
- Off hour inspections
- Plumbing Plan Review Design Guidance
- Schedule "A": Applies to all buildings three stories or more required to obtain a full plumbing plan review. Buildings by specific "Occupancy and Use" regardless of height or number of floors requiring a full plan review.
- Schedule "A": Applies to all buildings three stories or more required to obtain a full plumbing plan review. Buildings by specific "Occupancy and Use" regardless of height or number of floors requiring a full plan review.
- Application form for Alternate Material, Methods or Modifications (AMMRF)
- Medical gas categories and definitions
For additional question about the Plumbing Plan Review process, please call (206) 263-9566 or email planreviewinfo@kingcounty.gov
The 2018 edition of the Plumbing and Gas Piping codes will be effective on March 15, 2021.
Between February 1, 2021 and March 14, 2021, The Public Health Plumbing and gas Piping program will accept permit applications using either the 2015 or 2018 codes. Beginning March 15, 2021, Public Health will only accept permit applications that use the 2018 codes.
- Exception: A project where the building department has accepted plans prior to March 15, 2021.
TEMPORARY SCHEDULE CHANGES
Front office closures:
To reduce person-to-person contact related to COVID-19, the Environmental Health Services Division's in-person counter services at 401 Fifth Avenue in Seattle, WA (Chinook Building) and 14350 SE Eastgate Way in Bellevue, WA (Eastgate Public Health Center) will be suspended until further notice. See full notice on the Environmental Health homepage.
OFFICE LOCATIONS
Environmental Health Services
401 5th Ave, Suite 1100
Seattle, WA 98104
| Phone: 206-263-9566 |
| Fax: 206-296-0189 |
| Inspection request line: 206-205-0935 |
| Find a plumbing and gas piping inspector nearest you |
| For Vashon Island residents: Plumbing and gas piping inspections located on Vashon Island are only performed on Wednesdays. |
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Permit hours
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14350 SE Eastgate Way
Bellevue, WA 98007
| Phone: 206-477-8050 |
| Fax: 206-296-9792 |
| Inspection request line: 206-205-0935 |
| Find a plumbing and gas piping inspector nearest you |
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Permit hours
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Link/share our site at www.kingcounty.gov/plumbing