Plumbing permits in Woodinville: fees, timeline & requirements (2026)
Everything you need to know about pulling a plumbing permit in Woodinville, Washington — when one is required, what it costs, how long review takes, what documents are required, and which inspections you can expect. Cited to Woodinville Development Services.
Free lookup, no account needed — your lot polygon, zoning, setbacks and overlays, cited to Woodinville's source.
When does plumbing work need a permit in Woodinville?
Woodinville leaves the state plumbing code's exemptions unchanged (WMC 21.62.070), so installing or replacing a fixture, faucet, valve or water heater, adding or moving a fixture, new piping, or replacing a defective trap or drain needs a plumbing permit; only clearing a stoppage, or repairing a leak without replacing a valve, pipe or fixture, is exempt (UPC 104.2). Replacing a single-family fixture or water heater is issued over the counter in the City's Permit Portal, with no plan review; with a building permit, the plumbing is part of the Combined Building Permit.
From Woodinville's own code
“The listings of exemptions for electrical, gas, plumbing and mechanical shall remain unchanged.”Source ↗verified 2026-11-07
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
Plumber
Who can do this work in Woodinville?
Kolmo Construction is a licensed Washington general contractor — KOLMOL*753JS, active through April 10, 2027, bonded and insured — working throughout Woodinville and King County. Kolmo manages the plumbing job from start to finish: a licensed plumbing contractor performs the work and the permit, and Kolmo coordinates the scope, schedule, inspections and any related construction. Call (206) 410-5100 for a Woodinville 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 Woodinville 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: Woodinville Development Services ↗
- 4. Track review. Respond to reviewer comments promptly.
- 5. Pay issuance fees (Woodinville's fee schedule sets them) and pick up the permit. Inspection card travels with the job.
Or have Kolmo do it
Kolmo runs the job: a licensed plumbing contractor does the plumbing work and pulls the permit, and Kolmo coordinates the scope, schedule, inspections and any related construction.
Licensed WA general contractor KOLMOL*753JS · bonded & insured
Plumbing permits in Woodinville — FAQ
When does plumbing work need a permit in Woodinville?
Woodinville leaves the state plumbing code's exemptions unchanged (WMC 21.62.070), so installing or replacing a fixture, faucet, valve or water heater, adding or moving a fixture, new piping, or replacing a defective trap or drain needs a plumbing permit; only clearing a stoppage, or repairing a leak without replacing a valve, pipe or fixture, is exempt (UPC 104.2). Replacing a single-family fixture or water heater is issued over the counter in the City's Permit Portal, with no plan review; with a building permit, the plumbing is part of the Combined Building Permit.
How much does a plumbing permit cost in Woodinville?
Current fee per the Woodinville fee schedule: Plumbing permit fees are set by fixture count in the local fee schedule. Apply through Woodinville's online Permit Portal (https://aca-prod.accela.com/woodinville/default.aspx); the Apply for a Permit Online page (https://www.woodinville.gov/347/Apply-for-a-Permit-Online) explains the account setup. Plus ancillary plan-review/tech-surcharge fees per city schedule.