Seattle Subdivision Plat Submission Rules
Submitting a subdivision plat in Seattle, Washington requires following city land-use rules, filing the proper plat application, and coordinating with the Seattle Department of Construction & Inspections (SDCI). This guide explains typical application steps, required materials, review timelines, enforcement pathways and appeals so applicants, surveyors and developers know what to expect. For official filing instructions and preliminary checklist consult the SDCI subdivision and plats pages SDCI Plats & Short Plats[1].
Overview of Submission Requirements
Seattle requires a completed plat application package showing legal descriptions, survey plans, proposed lot lines, utilities, drainage, right-of-way impacts and any required reports (geotechnical, arborist, traffic) as determined during intake. Applications enter a timed review with public notice if required. The controlling standards are found in the Seattle Municipal Code (land use chapters) and SDCI rules; read Title 23 and SDCI guidance for specific submittal checklists Seattle Municipal Code - Title 23[2].
- Completed application forms and fees (see Applications & Forms below).
- Boundary and topographic survey prepared by a licensed surveyor.
- Site plan showing lot layout, lots sizes, access, easements and proposed improvements.
- Supporting reports (stormwater, geotechnical, traffic, tree assessments) when required.
- Public notice materials if a public review period is required.
Penalties & Enforcement
Enforcement of platting and subdivision requirements is administered by the Seattle Department of Construction & Inspections (SDCI). Violations of plat approval conditions, failure to record plats, or unauthorized lot splits may trigger administrative enforcement, stop-work orders, civil penalties and referral to the Hearing Examiner or King County Superior Court. Where specific penalty amounts or daily fine rates are not listed on the department guidance pages, they are described in the municipal code and related enforcement rules; fine amounts are not specified on the cited SDCI pages and must be read in the Municipal Code or enforcement rule citations Municipal Code[2].
- Monetary fines: not specified on the cited SDCI pages; see municipal code for statutory amounts.
- Escalation: first notice, follow-up orders, continuing violation fines or daily penalties as allowed by code (ranges not specified on the cited department pages).
- Non-monetary sanctions: stop-work orders, correction orders, mandatory mitigation, denial or rescission of approvals.
- Enforcer & complaints: SDCI accepts complaints and conducts inspections; contact SDCI enforcement via their contact page or file a complaint through SDCI intake.
- Appeal routes: administrative decisions can generally be appealed to the Seattle Hearing Examiner; exact time limits and procedures are set by SDCI notice and Hearing Examiner rules Seattle Hearing Examiner[3].
Applications & Forms
SDCI publishes application instructions and a permit intake process for plats; specific form names, numbers, fees and electronic submission requirements appear on the SDCI forms and fees pages. If a form number or fee is not shown on the main guidance page, it will be listed on the SDCI forms index or fee schedule; some items are "not specified on the cited page" and require checking the forms index or contacting SDCI directly SDCI Plats & Short Plats[1].
- Application form: see SDCI plat intake page for current application packet and checklist.
- Fees: fee schedule varies by plat type; check the current SDCI fee schedule for exact amounts.
- Submission: SDCI requires electronic submittal via ePlan or the portal indicated on the forms page; some filings may require paper originals for recording.
Common Violations
- Unauthorized lot division or sale prior to plat recording.
- Failure to install required improvements specified as conditions of approval.
- Incomplete or inaccurate survey and legal descriptions.
How-To
- Confirm applicable zoning and subdivision standards in Title 23 and SDCI guidance.
- Assemble a project team: licensed surveyor, civil engineer and any specialists required by SDCI.
- Prepare a full application packet with surveys, plans and supporting reports and submit via SDCI intake.
- Respond to completeness check and technical review comments within the timeframes provided by SDCI.
- Comply with conditions, record the final plat at the King County Recorder, and obtain any required permits for improvements.
FAQ
- What is the difference between a short plat and a subdivision?
- A short plat typically divides land into four or fewer lots and follows an abbreviated review process; larger divisions use the full subdivision review under Title 23 and SDCI rules.
- How long does review take?
- Review time depends on completeness and complexity; SDCI posts typical review timelines but individual projects vary and may require extensions or additional review cycles.
- Who can appeal a plat decision?
- Parties of record and applicants may appeal certain administrative decisions to the Seattle Hearing Examiner within the time limits stated in the decision notice.
Key Takeaways
- Start with SDCI pre-application guidance and check Title 23 standards.
- Use licensed professionals to prepare surveys and supporting reports.
- Understand enforcement, appeal deadlines and the Hearing Examiner process early.
Help and Support / Resources
- SDCI Plats & Short Plats
- SDCI Contact & Intake
- Seattle Municipal Code (Title 23)
- Seattle Hearing Examiner