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An Affidavit of Correction allows a professional land surveyor to correct errors and/or omissions of fact on any recorded subdivision, short subdivision, or boundary line adjustment. Must be prepared by licensed Land Surveyor registered in the State of Washington. See also Plat Alteration Submittal Instructions. For questions, please contact customer service at 206-296-6600 or email

See the current fee schedule for an estimate.

Where can I get an application?

Download the application forms below, or to have an application mailed to you, call customer service at 206-296-6600.

  • Affidavit of Correction of Boundary Line Adjustment, PDF or fill-in MS Word
  • Affidavit of Correction of Plat, PDF or fill-in MS Word
  • Affidavit of Correction of Short Plat, PDF or fill-in MS Word

How do I submit my application?

An Affidavit of Correction may be submitted along with the appropriate deposit to the Permitting office or by mail. For more information, see Drop-offs: Permits accepted by drop-off or mail.

What is the timeline for processing an Affidavit of Correction?

Varies 3 to 6 weeks depending on workload and resources available.