Demolition permits in Sammamish: fees, timeline & requirements (2026)
Everything you need to know about pulling a demolition permit in Sammamish, Washington — when one is required, what it costs, how long review takes, what documents are required, and which inspections you can expect. Cited to Sammamish Community Development.
Free lookup, no account needed — your lot polygon, zoning, setbacks and overlays, cited to Sammamish's source.
When does a demolition need a permit in Sammamish?
2021 IBC Section 105.1 + WA-adopted IRC R105.1: demolition of any structure or portion thereof requires a permit. Tear-out of interior finishes only is generally treated as alteration. Asbestos / lead notification often required separately under WAC 173-303 / 296-62.
How Sammamish adopted this rule
The threshold comes from the state code (WAC 51.51), which Sammamish adopts by reference in the provision quoted below.
“The 2021 Edition of the International Residential Code, as adopted by the State Building Code Council in Chapter 51-51 WAC, as published by the International Code Council, including Appendix Q, Tiny Houses, and excluding Chapters 1, 11 and 25 through 43, is hereby adopted by the City of Sammamish”Source ↗verified 2026-10-02
Required submittals
- Site plan
- Utility disconnect confirmations
- Asbestos survey (pre-1981 structures)
- Erosion / sediment control plan
- Haul route if structure >1500 sq ft
Inspection sequence
- Pre-demo (utilities + erosion)
- Mid-demo if multi-day
- Final site stabilization
Contractor specialties needed
General contractor
Who can do this work in Sammamish?
Kolmo Construction is a licensed Washington general contractor — KOLMOL*753JS, active through April 10, 2027, bonded and insured — working throughout Sammamish and King County. Kolmo prepares the drawings and submittals, files the demolition permit with Sammamish Community Development, carries the project through review and inspections, and performs the demolition. Call (206) 410-5100 for a Sammamish demolition quote.
Notes & caveats
Disconnect notices required from utilities (gas, electric, water, sewer) before issuance. Erosion control plan required where soil is disturbed. Bonded contractor typically required. Site stabilization + capped sewer line at completion.
How to apply yourself
- 1. Confirm your parcel's zoning & overlays. Run an address lookup for your demolition in Sammamish — we'll pull your specific lot polygon, zoning, setbacks, and any shoreline, critical-area or historic overlays.
- 2. Assemble submittals: the 5 documents under Required submittals above.
- 3. Submit through the city portal: Sammamish Community Development ↗
- 4. Track review. Respond to reviewer comments promptly.
- 5. Pay issuance fees (Sammamish's fee schedule sets them) and pick up the permit. Inspection card travels with the job.
Or have Kolmo do it
Kolmo prepares the drawings and submittals, files with Sammamish Community Development, handles reviewer comments, and does the demolition.
Licensed WA general contractor KOLMOL*753JS · bonded & insured
Demolition permits in Sammamish — FAQ
When does a demolition need a permit in Sammamish?
2021 IBC Section 105.1 + WA-adopted IRC R105.1: demolition of any structure or portion thereof requires a permit. Tear-out of interior finishes only is generally treated as alteration. Asbestos / lead notification often required separately under WAC 173-303 / 296-62.
How much does a demolition permit cost in Sammamish?
Sammamish's demolition permit for a single-family house is a $261 flat fee, plus a $513 site bond, and Public Works' review of the demolition a $655 flat fee. The City adds a 15% technology fee to each fee (2026 Fee Schedule). Apply via https://mybuildingpermit.com.