Plumbing permits in City of Redmond: fees, timeline & requirements (2026)
Everything you need to know about pulling a plumbing permit in City of Redmond, Washington — when one is required, what it costs, how long review takes, what documents are required, and which inspections you can expect. Cited to Redmond uses ePlans portal..
Free lookup, no account needed — your lot polygon, zoning, setbacks and overlays, cited to City of Redmond's source.
When does a plumbing need a permit in City of Redmond?
WAC 51-56 (2021 UPC) requires plumbing permit for installation, replacement, or relocation of any plumbing fixture, water heater, or piping. Like-for-like faucet replacement is exempt.
How City of Redmond adopted this rule
The threshold comes from the state code (WAC 51.56), which City of Redmond adopts by reference in the provision quoted below.
“The 2021 edition of the Uniform Plumbing Code, including Appendices A, B, I, and M, published by the International Association of Plumbing and Mechanical Officials, is hereby adopted by reference with the following additions, deletions and exceptions: Provided that chapters 12 and 14 of this code are not adopted. Provided further that those requirements of the Uniform Plumbing Code relating to venting and combustion air of fuel fired appliances as found in chapter 5 and those portions of the code addressing building sewers are not adopted.”Source ↗verified 2026-05-29
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 Redmond?
Kolmo Construction is a licensed Washington general contractor — KOLMOL*753JS, active through April 10, 2027, bonded and insured — working throughout City of Redmond and King County. Kolmo prepares the drawings and submittals, files the plumbing permit with Redmond uses ePlans portal., carries the project through review and inspections, and performs the construction. Call (206) 410-5100 for a City of Redmond 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 Redmond 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: Redmond uses ePlans portal. ↗
- 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://eplans.redmond.gov.) and pick up the permit. Inspection card travels with the job.
Or have Kolmo do it
We pull plumbing permits in City of Redmond every month. We prepare the drawings and submittals, file with Redmond uses ePlans portal., handle reviewer comments, and build the project.
Licensed WA general contractor KOLMOL*753JS · bonded & insured
Plumbing permits in City of Redmond — FAQ
When does a plumbing need a permit in City of Redmond?
WAC 51-56 (2021 UPC) requires plumbing permit for installation, replacement, or relocation of any plumbing fixture, water heater, or piping. Like-for-like faucet replacement is exempt.
How much does a plumbing permit cost in City of Redmond?
Current fee per the City of Redmond fee schedule: Plumbing permit fees are set by fixture count in the city's fee schedule. Apply via https://eplans.redmond.gov.. Plus ancillary plan-review/tech-surcharge fees per city schedule.