Side sewer permits in Woodinville: fees, timeline & requirements (2026)
Everything you need to know about pulling a side sewer 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 Water District.
Free lookup, no account needed — your lot polygon, zoning, setbacks and overlays, cited to Woodinville's source.
When does side sewer work need a permit in Woodinville?
The City of Woodinville has no sewer utility and issues no side-sewer permit: the utility that serves the lot does, under its own rules and fees. King County's sewer service area map puts most of Woodinville in Woodinville Water District's area, with slivers in Northshore Utility District's and the City of Bothell's; a lot with no sewer available is on a septic system. New construction needs Woodinville Water District's certificate of water and sewer availability before the City takes the building application; Public Health – Seattle & King County approves a septic system.
In the source's own words
“Applications for new construction require certificates of available water and sewer services from Woodinville Water District prior to submitting a development permit to the City.”Source ↗verified 2026-11-07
Required submittals
- Site plan with sewer line route
- Depth + slope detail
- Cleanout locations
- Utility locate ticket
Inspection sequence
- Pre-cover (open trench)
- Air / water test
- Final
Contractor specialties needed
Side sewer contractor
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 prepares the drawings and submittals, files the side sewer permit with Woodinville Water District, carries the project through review and inspections, and performs the construction. Call (206) 410-5100 for a Woodinville side sewer quote.
Notes & caveats
Issuing body is the sanitary sewer utility, NOT the building department, and inspection is the utility's too. SOME utilities additionally require the contractor to hold a side-sewer card or registration before they will issue; it is not universal, so check the serving utility's own rules rather than assuming either way.
How to apply yourself
- 1. Confirm your parcel's zoning & overlays. Run an address lookup for your Woodinville side sewer — we'll pull your specific lot polygon, zoning, setbacks, and any shoreline/ECA/historic overlays.
- 2. Assemble submittals (4).
- 3. Apply with Woodinville Water District.
- 4. Track review. Respond to reviewer comments promptly.
- 5. Pay issuance fees (Woodinville Water District sets them) and pick up the permit. Inspection card travels with the job.
Or have Kolmo do it
Kolmo prepares the drawings and submittals, files with Woodinville Water District, handles reviewer comments, and builds the project.
Licensed WA general contractor KOLMOL*753JS · bonded & insured
Side sewer permits in Woodinville — FAQ
When does side sewer work need a permit in Woodinville?
The City of Woodinville has no sewer utility and issues no side-sewer permit: the utility that serves the lot does, under its own rules and fees. King County's sewer service area map puts most of Woodinville in Woodinville Water District's area, with slivers in Northshore Utility District's and the City of Bothell's; a lot with no sewer available is on a septic system. New construction needs Woodinville Water District's certificate of water and sewer availability before the City takes the building application; Public Health – Seattle & King County approves a septic system.
How much does a side sewer permit cost in Woodinville?
King County's sewer service area map shows Woodinville served by Woodinville Water District, with slivers served by Northshore Utility District and the City of Bothell; the City has no sewer utility of its own. The side sewer permit and its fees come from the utility that serves the lot, under its own rules and fee schedule, not from the City's building permit, so confirm the lot's utility before applying. Utility: Woodinville Water District (https://www.woodinvillewater.com/).