Window replacement permits in City of Sammamish: fees, timeline & requirements (2026)
Everything you need to know about pulling a window replacement permit in City of 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 Apply via MyBuildingPermit.com..
When does a window replacement need a permit in City of Sammamish?
2021 IRC R105.2(1)(g) exempts like-for-like window replacement (same rough opening, same R-value class). Permit required for: new openings, enlarged/reduced openings, egress-affecting changes (R310), and any change that crosses a structural element.
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
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 City of Sammamish
Worked example for a $8,000 window replacement project (building permit). Your actual fee scales with project valuation.
| Building permit fee | $153.25 |
| Plan review | $99.61 |
| WA state surcharge | $4.5 |
| Estimated total | $257.36 |
Like-for-like usually no permit fee. Structural changes scale with valuation. Apply via https://mybuildingpermit.com. Computed from the City of Sammamish fee bracket schedule · source ↗. Impact/utility fees may apply separately.
How to apply
- 1. Confirm your parcel's zoning & overlays. Run an address lookup for your City of Sammamish window replacement — 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: Apply via MyBuildingPermit.com. ↗
- 4. Track review (typical: —). Respond to reviewer comments promptly.
- 5. Pay issuance fees (Like-for-like usually no permit fee. Structural changes scale with valuation. Apply via https://mybuildingpermit.com.) and pick up the permit. Inspection card travels with the job.
Window replacement permits in City of Sammamish — FAQ
When does a window replacement need a permit in City of Sammamish?
2021 IRC R105.2(1)(g) exempts like-for-like window replacement (same rough opening, same R-value class). Permit required for: new openings, enlarged/reduced openings, egress-affecting changes (R310), and any change that crosses a structural element.
How much does a window replacement permit cost in City of Sammamish?
For a $8,000 window replacement project, the estimated City of Sammamish permit fee is about $257.36 — building fee $153.25 + plan review $99.61 + surcharges. Fees scale with project valuation per the city schedule.
