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Applications, forms, and fees
Find applications and forms for the on-site sewage/septic system industry.
Wastewater applications
- Application for Final Subdivision (494 KB)
- Application for Health Department Approval of Building Permit (347 KB)
- Application for Health Department Review of Boundary Line Adjustment or Rezone 460 KB)
- Application for Winter Water Table Review (WWTR) (459 KB)
- Application to Change Designer of Record (306 KB)
- Pre-Application for Review of Subdivision (500 KB)
- Repair proposal form for on-site sewage system (OSS) (381 KB)
- Instructions for Preparing an Appeal to the Health Officer via the King County Sewage Review Committee (SRC) Process (442 KB)
Site design application form
- Online: See instructions on how to submit the On-Site Sewage System (OSS) Site Design application and required and optional checklist
- Submit your application at the online services portal
- Mail: Site Design Application Form for Individual On-Site Sewage System (OSS) (221 KB)
Wastewater forms
- Search and download an as-built Drawing for a property in King County
- King County site development process flow chart (113 KB)
- Buyer's Declaration of Receipt of Copy of Notice of On-Site Sewage System Operation and Maintenance Requirements (example only) (11 KB)
- Drainfield Easement Form (example only) (62 KB)
- Declaration of Covenant: Detached Structure Restriction (396 KB)
- Declaration of Covenant: Bedroom Restriction (1.073 KB)
- Designer's Pre-Installation Inspection Report/Stub-Out Release (166 KB)
- District Waiver Request (19 KB)
- Request form of public information needed by OSM to complete inspection report (80 KB)
- Notice on Title Generic Form: Notice of On-site Sewage System Operation and Maintenance Requirements (OSSM) (197 KB)
- Non-conforming Notice on Title: Notice of On-Site Sewage System Operation and Maintenance Requirements (196 KB)
- On-site Sewage System/Sewage Tank Service Report (83 KB)
- Report of Wastewater Tank Abandonment (290 KB)
- Waiver form for property transfer inspection (49 KB)