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The Third Avenue entrance to the King County Courthouse is temporarily closed. Please use the Fourth Avenue entrance.  
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Filing a New Case

To file a case in Superior Court, you must either file online, mail your documents (plus filing fee) to the Superior Court Clerk's Office or go in-person to the Superior Court Clerk's Office. The Clerk's Office operates at the following locations:

King County Courthouse
516 3rd Avenue, Room E-609
Seattle, WA 98104

Maleng Regional Justice Center
401 4th Avenue North, Room 2C
Kent, WA 98032

For more information on how to file official court documents, please visit THIS WEBPAGE.

Filing Documents into an Existing Case

Once you have filed your case, if you need to file additional court documents into the same case, you must again either file online, mail your documents (plus filing fee) to the Superior Court Clerk's Office or go in-person to the Superior Court Clerk's Office.

For more information on how to file official court documents, please visit THIS WEBPAGE.

Delivering Working Copies to the Court

If you need to deliver working copies to the court, please observe the following protocols. Note that working copies are NOT the official copies of your court documents. Those must be filed FIRST in the Superior Court Clerk's Office. Working copies are the documents judges and commissioners use to familiarize themselves with your case.

King County Courthouse
516 3rd Avenue, Room C-203
Seattle, WA 98104

Maleng Regional Justice Center
401 4th Avenue North, Room 2D
Kent, WA 98032

  • Please obtain prior approval from the court before faxing or e-mailing documents/pleadings.
  • Follow the local court rules for pagination of documents.
  • Copies of orders will not be mailed unless pre-addressed stamped envelopes are provided. If no envelopes were provided, copies of orders may be obtained from the Clerk's Office approximately five (5) days after a ruling has been issued.

The King County Courthouse (Seattle) 3rd Avenue entrance is closed due to construction. It will remain closed through July 26. Please use the 4th Avenue entrance on the west side of 4th Avenue. Visitors can also use the King County Administration Building to enter the courthouse. Enter the Admin Building on 4th Avenue or 5th Avenue and take the elevator to "T" Tunnel.