Window replacement permits in Sammamish: fees, timeline & requirements (2026)
Everything you need to know about pulling a window replacement 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 a window replacement need a permit in Sammamish?
Replacing a window needs no permit when no structural member is altered, unless it is an egress (escape) window or one that must have safety glass or fall protection.
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
- If new/enlarged opening: header schedule, structural detail, WSEC NFRC sticker for U-factor
Inspection sequence
- Rough-opening inspection (if structural)
- Final
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 window replacement permit with Sammamish Community Development, carries the project through review and inspections, and performs the construction. Call (206) 410-5100 for a Sammamish window replacement quote.
Notes & caveats
WSEC R402.4: replacement windows must meet U-factor ≤0.30 (climate zone 4C/5B applicable to most WA). Egress sleeping rooms must retain compliant opening (R310).
Window replacement permit fee estimate in Sammamish
Worked example for an $8,000 window replacement project (building permit). Your actual fee scales with project valuation.
| Building permit fee | $360.31 |
| Plan review | $234.20 |
| Technology surcharge | $89.18 |
| WA state surcharge | $6.50 |
| Estimated total | $690.19 |
Where a window replacement needs a permit in Sammamish, such as an egress window or one that needs safety glass or fall protection, the building permit is 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 window replacement in Sammamish — we'll confirm which office issues the permit at that address.
- 2. Assemble submittals: the document 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 (about $690 for an $8,000 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
Window replacement permits in Sammamish — FAQ
When does a window replacement need a permit in Sammamish?
Replacing a window needs no permit when no structural member is altered, unless it is an egress (escape) window or one that must have safety glass or fall protection.
How much does a window replacement permit cost in Sammamish?
For a $8,000 window replacement project, the estimated Sammamish permit fee is about $690.19 (building fee $360.31 + plan review $234.20 + surcharges) from Sammamish's adopted fee schedule. Land use, fire and engineering review, intake, impact and utility fees, where they apply, are charged separately.