How much does a siding permit cost in City of Seattle?

Current fee per the City of Seattle fee schedule: Often exempt. If permit required, Subject-to-Field-Inspection.. Plus ancillary plan-review/tech-surcharge fees per city schedule.

Which cities is the Kolmo permit lookup verified for?

Ten cities: Seattle, Bellevue, Kirkland, Redmond, Sammamish, Issaquah, Renton, Kent, Federal Way, and Mercer Island. For these, every fee, threshold, and timeline is sourced from the city directly with the exact quote and URL, and re-verified weekly. Outside these ten cities address lookup still works and we render the parcel and Washington-state baseline code, but per-city specifics are flagged as unverified.

Does the lookup cover unincorporated King, Pierce, or Snohomish County?

Address lookup works and parcels resolve to the county building department, but unincorporated coverage is currently baseline-only — Washington-state IRC, IBC, and WSEC plus state critical-area rules. Per-county fee and code deviations have not been verified to the same standard as the ten verified cities.

Will this replace calling the permit center?

For most homeowner projects — decks, kitchens, bathrooms, ADUs, fences, siding, windows, flooring, roofing, HVAC, electrical, plumbing — the published answer matches what the permit center will say, and the homeowner can submit with a pre-filled application packet. For variances, conditional uses, or unusual scope, calling the city planner is still recommended.

Where does the address go after submission?

The address is geocoded via Google Maps to identify the correct county, then queried against public county GIS endpoints. Parcel data is cached for 30 days. The address is not contacted, sold, or shared with third parties.

Who built this — and why?

Built by Kolmo Construction, a licensed Seattle-area general contractor. The team works with permit code daily and built this to fix the public web's poor coverage of homeowner permit questions. The lookup is free; if a homeowner wants a contractor for the project, Kolmo is one option.

Siding permits in City of Seattle: fees, timeline & requirements (2026)

Everything you need to know about pulling a siding permit in City of Seattle, Washington — when one is required, what it costs, how long review takes, what documents are required, and which inspections you can expect. Cited to Seattle Department of Construction & Inspections (SDCI).

Permit required?

Often no

Permit fee

Often exempt. If permit required, Subject-to-Field-Inspection.

Review timeline

— · OTC eligible

When does a siding need a permit in City of Seattle?

Like-for-like siding replacement is treated as ordinary repair and typically exempt under 2021 IRC R105.2. Adding continuous insulation, changing the WRB system, or any modification that affects WSEC compliance triggers a Subject-to-Field-Inspection permit.

Required submittals

if permit required: WRB + flashing details, fastener schedule, WSEC continuous insulation calc

Inspection sequence

WRB / flashing inspection (if permit required)
final

Contractor specialties needed

general

Notes & caveats

WRB + flashing details inspected if permit issued. ECA proximity may trigger additional review.

How to apply

1. Confirm your parcel's zoning & overlays. Run an address lookup on the main permits page — we'll pull your specific lot polygon, zoning, setbacks, and any shoreline/ECA/historic overlays.
2. Assemble submittals (1).
3. Submit through the city portal: Seattle Department of Construction & Inspections (SDCI) ↗
4. Track review (typical: —). Respond to reviewer comments promptly.
5. Pay issuance fees (Often exempt. If permit required, Subject-to-Field-Inspection.) and pick up the permit. Inspection card travels with the job.

Compare this against other cities

Side-by-side siding requirements across all 10 verified Seattle-area cities.

All City of Seattle permits

Every project type — ADU, addition, kitchen, bath, deck, fence, and more — for City of Seattle.

City of Seattle resourcesPermit portal ↗Fee schedule ↗