Seattle Subdivision Infrastructure Checklist

Land Use and Zoning Washington 4 Minutes Read ยท published February 07, 2026 Flag of Washington

Seattle, Washington requires developers and landowners to meet city standards for streets, utilities, storm drainage, sidewalks, survey monuments and erosion control when creating subdivisions. This checklist explains the infrastructure elements typically reviewed during a short plat or long plat application and links to Seattle Department of Construction & Inspections (SDCI) permit guidance and fee information so teams can prepare complete plans and bonding arrangements before application. SDCI subdivision permits[1] and the SDCI fee pages explain submittal requirements and current schedules. Fees[2]

Start planning infrastructure layouts early and coordinate utilities with city staff before final plat submittal.

Subdivision infrastructure checklist

Use this list to verify common infrastructure items that SDCI and Seattle Public Utilities review. Local conditions, right-of-way obligations, and design standards will determine final requirements.

Typical infrastructure items reviewed

  • Street improvements and paving, including curb, gutter and crosswalks where required.
  • Right-of-way dedications or easements and any timing/deadline for off-site work.
  • Performance bonds or financial guarantees for incomplete work at plat recording.
  • Stormwater management facilities, detention/infiltration systems, and construction-phase erosion control.
  • Utility connections: potable water, sewer, storm, and coordination with Seattle Public Utilities.
  • Survey monuments, legal descriptions, and final plat drawings prepared by a licensed surveyor.
  • Sidewalks, street trees, lighting, and Americans with Disabilities Act (ADA) compliance elements.

Design standards and technical details vary by neighborhood and street classification; confirm with SDCI staff and the official standards before final submittal. Subdivision permit guidance[1]

Penalties & Enforcement

Enforcement of subdivision infrastructure requirements is administered by SDCI and related City departments; specific fines, escalating penalties, and non-monetary remedies depend on the code section and permit conditions. The SDCI permit and code pages list enforcement contacts but do not publish per-day fine amounts on the general permit guidance pages. SDCI subdivision permits[1] More detailed penalty provisions appear in the Seattle Municipal Code and the applicable permit terms and conditions; amounts and schedules are not specified on the cited SDCI pages.

Enforcement outcomes often depend on permit conditions and whether work proceeded without authorization.

Key enforcement elements to expect:

  • Fine amounts: not specified on the cited page.
  • Escalation: first, repeat, and continuing offences and their ranges are not specified on the SDCI permit guidance pages.
  • Non-monetary sanctions: stop-work orders, permit revocation, corrective work orders, and recorded liens may be applied under city code.
  • Enforcer and inspection: Seattle Department of Construction & Inspections is the primary enforcement agency; complaints and inspection requests route through SDCI contact channels and online services. Hearing Examiner[3]
  • Appeals and review: administrative decisions may be appealed according to the Hearing Examiner procedures; specific time limits for appeals should be confirmed on the Hearing Examiner site or the permit decision notice.

Applications & Forms

SDCI publishes application guides, checklists, and fee schedules for short plats and long plats; submitted plans must include civil engineering sheets, drainage reports, restoration and construction notes, and a surveyor-prepared final plat. The exact form names and fees are listed on SDCI permit and fee pages rather than on the general guidance page. Fees[2]

How-To

  1. Review SDCI subdivision permit guidance and fee schedule to confirm submission checklist and applicable fees.
  2. Hire a licensed civil engineer and land surveyor to prepare plans, drainage reports, and legal descriptions.
  3. Request a pre-application meeting with SDCI to identify neighborhood- or site-specific requirements.
  4. Coordinate utility and sewer connections with Seattle Public Utilities and obtain any necessary permits or approvals.
  5. Prepare performance bonds or financial guarantees if required for unfinished improvements at recording.
  6. Submit the complete application package to SDCI, respond to completeness/technical review comments, and schedule inspections for construction phases.
  7. If a permit is denied, follow the decision notice for appeal steps and deadlines with the Hearing Examiner.
Apply early for pre-application review to reduce redesigns and delays.

FAQ

What infrastructure is required for a Seattle subdivision?
Typical requirements include street improvements, curb and gutter, stormwater facilities, utility service connections, sidewalks, survey monuments, and erosion control; final requirements depend on site-specific review and SDCI standards. SDCI guidance[1]
How long does permitting and review usually take?
Review timelines depend on application completeness and complexity; specific processing times are not specified on the general guidance page and should be confirmed with SDCI or the permit intake team. Fees and timelines[2]
Can I appeal a decision on a subdivision permit?
Yes, appeal procedures are handled through the City hearing process; follow the decision notice for time limits and the Hearing Examiner instructions for filing an appeal. Hearing Examiner[3]

Key Takeaways

  • Coordinate early with SDCI and Seattle Public Utilities to identify site-specific infrastructure needs.
  • Prepare complete engineering and survey packages to avoid review delays and bonding surprises.

Help and Support / Resources

  1. [1] City of Seattle - SDCI subdivision permits and guidance
  2. [2] City of Seattle - SDCI fee schedule and permit fees
  3. [3] City of Seattle - Hearing Examiner procedures and appeals

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