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..

Look up your City of Kirkland address

Free lookup, no account needed — your lot polygon, zoning, setbacks and overlays, cited to City of Kirkland's source.

Permit required?

Depends on the scope — see below

Permit fee

Plumbing permit fees are set by fixture count in the city's fee schedule. Apply via https://mybuildingpermit.com.

Review timeline

Not published by the city

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.

In the source's own words

“Plumbing permits regulated by Public Health – Seattle & King County.”
Source ↗verified 2026-09-24

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

Who can do this work in City of Kirkland?

Kolmo Construction is a licensed Washington general contractor — KOLMOL*753JS, active through April 10, 2027, bonded and insured — working throughout City of Kirkland and King County. Kolmo prepares the drawings and submittals, files the plumbing 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 Kirkland plumbing quote.

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.

How to apply yourself

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. Respond to reviewer comments promptly.
5. Pay issuance fees (Plumbing permit fees are set by fixture count in the city's fee schedule. Apply via https://mybuildingpermit.com.) and pick up the permit. Inspection card travels with the job.

Or have Kolmo do it

We pull plumbing permits in City of Kirkland every month. We prepare the drawings and submittals, file with Apply via MyBuildingPermit.com., handle reviewer comments, and build the project.

(206) 410-5100

Licensed WA general contractor KOLMOL*753JS · bonded & insured

Compare this against other cities

Side-by-side plumbing requirements across every covered Seattle-area city.

All City of Kirkland permits

Every project type — ADU, addition, kitchen, bath, deck, fence, and more — for City of Kirkland.

Plumbing permits in City of Kirkland — FAQ

When does a plumbing need a permit in City of Kirkland?

How much does a plumbing permit cost in City of Kirkland?

Current fee per the City of Kirkland fee schedule: Plumbing permit fees are set by fixture count in the city's fee schedule. Apply via https://mybuildingpermit.com.. Plus ancillary plan-review/tech-surcharge fees per city schedule.

City of Kirkland resourcesPermit portal ↗Fee schedule ↗