Flooring permits in Sammamish: fees, timeline & requirements (2026)
Everything you need to know about pulling a flooring 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 — the office that issues the permit at your address, cited to Sammamish's source.
When does new flooring need a permit in Sammamish?
2021 IRC R105.2(1)(j) exempts floor finishes (carpet, vinyl, hardwood, tile). Permit required if subfloor structure is modified, joists altered, or radiant heat installed.
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
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 flooring permit with Sammamish Community Development, carries the project through review and inspections, and performs the construction. Call (206) 410-5100 for a Sammamish flooring quote.
Notes & caveats
Radiant in-floor heat is a mechanical permit (electric) or plumbing permit (hydronic).
Flooring permit fee estimate in Sammamish
Worked example for a $6,000 flooring project (building permit). Your actual fee scales with project valuation.
| Building permit fee | $319.13 |
| Plan review | $207.43 |
| Technology surcharge | $78.98 |
| WA state surcharge | $6.50 |
| Estimated total | $612.04 |
Where flooring work needs a permit in Sammamish, such as work on the floor structure, it is a building permit priced on the value of the work, $142.05 up to $500 and $142.05 for the first $500 plus $6.31 for each $100 more up to $2,000. The City adds a 15% technology fee to each fee (2026 Fee Schedule). Apply via mybuildingpermit.com. Computed from Sammamish's adopted fee schedule · source ↗. Land use, fire and engineering review, intake, impact and utility fees, where they apply, are charged separately.
How to apply yourself
- 1. Check who issues the permit. Run an address lookup for your new flooring in Sammamish — we'll confirm which office issues the permit at that address.
- 2. Assemble submittals: the application and what it asks for, as Sammamish Community Development lists them.
- 3. Submit through the city portal: Sammamish Community Development ↗
- 4. Track review. Respond to reviewer comments promptly.
- 5. Pay issuance fees (about $612 for a $6,000 project) 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 builds the project.
Licensed WA general contractor KOLMOL*753JS · bonded & insured
Flooring permits in Sammamish — FAQ
When does new flooring need a permit in Sammamish?
2021 IRC R105.2(1)(j) exempts floor finishes (carpet, vinyl, hardwood, tile). Permit required if subfloor structure is modified, joists altered, or radiant heat installed.
How much does a flooring permit cost in Sammamish?
For a $6,000 flooring project, the estimated Sammamish permit fee is about $612.04 (building fee $319.13 + plan review $207.43 + surcharges) from Sammamish's adopted fee schedule. Land use, fire and engineering review, intake, impact and utility fees, where they apply, are charged separately.