Signs permits in City of Mercer Island: fees, timeline & requirements (2026)
Everything you need to know about pulling a sign permit in City of Mercer Island, 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..
Free lookup, no account needed — your lot polygon, zoning, setbacks and overlays, cited to City of Mercer Island's source.
When does a sign need a permit in City of Mercer Island?
City sign code (typically Title 22 or 23) governs. Wall, freestanding, projecting, awning, and electronic message signs all require permits. Most cities exempt small temporary residential signs (real-estate, political) under area thresholds (~6 sqft).
Required submittals
- site / elevation plan
- sign drawing with dimensions + materials
- structural calc if freestanding
- electrical detail if illuminated
Inspection sequence
- footing if freestanding
- electrical rough-in if illuminated
- final
Contractor specialties needed
general, electrical-01-or-02
Who can do this work in City of Mercer Island?
Kolmo Construction is a licensed Washington general contractor — KOLMOL*753JS, active through April 10, 2027, bonded and insured — working throughout City of Mercer Island and King County. Kolmo prepares the drawings and submittals, files the sign permit with Apply via MyBuildingPermit.com., carries the project through review and inspections, and performs the construction. Call (206) 410-5100 for a City of Mercer Island sign quote.
Notes & caveats
Issuing body is city building dept (structural review) often with planning sign-off (zoning compliance). Electrical permit required for illuminated signs. Historic-district signs get separate review.
How to apply yourself
- 1. Confirm your parcel's zoning & overlays. Run an address lookup for your City of Mercer Island sign — we'll pull your specific lot polygon, zoning, setbacks, and any shoreline/ECA/historic overlays.
- 2. Assemble submittals (4).
- 3. Submit through the city portal: Apply via MyBuildingPermit.com. ↗
- 4. Track review. Respond to reviewer comments promptly.
- 5. Pay issuance fees (Sign permit fees are set in the city's fee schedule, plus an electrical sub-permit for an illuminated sign.) and pick up the permit. Inspection card travels with the job.
Or have Kolmo do it
We pull sign permits in City of Mercer Island every month. We prepare the drawings and submittals, file with Apply via MyBuildingPermit.com., handle reviewer comments, and build the project.
Licensed WA general contractor KOLMOL*753JS · bonded & insured
Signs permits in City of Mercer Island — FAQ
When does a sign need a permit in City of Mercer Island?
City sign code (typically Title 22 or 23) governs. Wall, freestanding, projecting, awning, and electronic message signs all require permits. Most cities exempt small temporary residential signs (real-estate, political) under area thresholds (~6 sqft).
How much does a sign permit cost in City of Mercer Island?
Current fee per the City of Mercer Island fee schedule: Sign permit fees are set in the city's fee schedule, plus an electrical sub-permit for an illuminated sign.. Plus ancillary plan-review/tech-surcharge fees per city schedule.