King County Commercial Building & Structural Permit Calculator
Official fee schedule logic based on King County Code Title 27. Includes plan review fees, technology surcharges, and prerequisite contractor bond rules.
- AHJ Authority
- King County Dept of Local Services & SDCI
- Enforced Ordinance
- King County Code Title 27
- Plan Check SLA
- 16 - 26 Business Days
- Surety Bond Required
- $12,000
King County Commercial Permit Fee Estimator
Tier Valuation Formula: $1,665 base fee + $3.80 per $1,000 above $250,000 valuation.
Mandatory Contractor Prerequisites & Submittal Checklist
King County AHJ RequirementsContractor Surety License Bond
King County requires an active $12,000 Washington Contractor Registration Bond on file prior to plan submittal.
Commercial COI Liability ($1M+)
Minimum $1.0M General Liability COI naming King County Building Dept as Certificate Holder.
Commercial Building & Structural Submittal Rules in King County
Specialized trade submittals for Commercial Building & Structural in King County, Washington are administered by King County Dept of Local Services & SDCI. Permits are required prior to installing, extending, replacing, or altering any mechanical, electrical, plumbing, structural, or life-safety infrastructure under King County Code Title 27.
Intake review for Commercial Building & Structural requires verified trade licensing, minimum contractor general liability COI filings ($1,000,000+), and compliance with enforced regional code editions (2021 Washington State Energy Code (WSEC).).
Mandatory Submittal Plan Documents & PE Engineering Stamps
Plans submitted to King County Dept of Local Services & SDCI for Commercial Building & Structural must include scaled engineering drawings and specifications:
- WSEC Commercial Energy Forms
Inspection Sequence for Commercial Building & Structural
Work performed under a Commercial Building & Structural permit in King County requires mandatory rough-in and final field inspections. Rough-in inspections must be conducted and signed off by the municipal inspector prior to covering or concealing any piping, ductwork, structural framing, or electrical conductors. Final inspection and system testing are required for building certificate of completion issuance.
King County Dept of Local Services & SDCI Official Building Department
35030 SE Douglas St, Snoqualmie, WA 98065 | Phone: (206) 296-6600