Plumbing permits in City of Kirkland: fees, timeline & requirements (2026)
Everything you need to know about pulling a plumbing permit in City of Kirkland, 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 plumbing need a permit in City of Kirkland?
Plumbing work (water/waste/vent piping, backflow devices, water-heater replacement, hose bibs) requires a permit. In Kirkland, plumbing permits are regulated by Public Health – Seattle & King County, not the City.
From City of Kirkland's own page
“Plumbing permits regulated by Public Health – Seattle & King County.”Source ↗verified 2026-06-26
Required submittals
- fixture count + DFU calc for repipes
- water heater specs
- sewer line plan if site work involved
Inspection sequence
- rough-in / pressure test
- final
Contractor specialties needed
plumbing
Notes & caveats
Water heater: T&P relief, expansion tank required if pressure >80psi or check valve installed. Sewer line: cleanouts at every 100ft + change of direction. Backwater valve required in flood zones.
Plumbing permit fee estimate in City of Kirkland
Worked example for a $6,000 plumbing project (plumbing permit). Your actual fee scales with project valuation.
| Building permit fee | $150 |
| Plan review | $97.5 |
| WA state surcharge | $4.5 |
| Estimated total | $252 |
Multi-fixture (bathroom remodel, repipe section): ~$150 Computed from the City of Kirkland 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 Kirkland plumbing — we'll pull your specific lot polygon, zoning, setbacks, and any shoreline/ECA/historic overlays.
- 2. Assemble submittals (3).
- 3. Submit through the city portal: Apply via MyBuildingPermit.com. ↗
- 4. Track review (typical: —). Respond to reviewer comments promptly.
- 5. Pay issuance fees (Plumbing permit fees by fixture count. Standard residential ~$80-$250. Apply via https://mybuildingpermit.com.) and pick up the permit. Inspection card travels with the job.
Plumbing permits in City of Kirkland — FAQ
When does a plumbing need a permit in City of Kirkland?
Plumbing work (water/waste/vent piping, backflow devices, water-heater replacement, hose bibs) requires a permit. In Kirkland, plumbing permits are regulated by Public Health – Seattle & King County, not the City.
How much does a plumbing permit cost in City of Kirkland?
For a $6,000 plumbing project, the estimated City of Kirkland permit fee is about $252 — building fee $150 + plan review $97.5 + surcharges. Fees scale with project valuation per the city schedule.
