HVAC permits in Woodinville: fees, timeline & requirements (2026)
Everything you need to know about pulling an HVAC / mechanical 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 HVAC work need a permit in Woodinville?
Installing or replacing heating, cooling or ventilation equipment needs a mechanical permit in Woodinville: the City leaves the state mechanical code's exemptions unchanged (WMC 21.62.070), and those exempt only portable appliances, minor parts and small self-contained refrigeration units. Replacing an appliance in a single-family house is issued over the counter in the City's Permit Portal, with no plan review; with a building permit, the mechanical work is part of the Combined Building Permit. The wiring needs an electrical permit from L&I.
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
- Equipment specs (model #, capacity)
- Manual J/S/D for new system
- Gas piping diagram if applicable
- Electrical permit cross-reference
Inspection sequence
- Rough-in / gas pressure test
- Final
Contractor specialties needed
HVAC contractor · Electrician (journey-level 01 or residential 02), for heat pump tie-in
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 HVAC / mechanical job from start to finish: a licensed HVAC subcontractor performs the work and the permit, and Kolmo coordinates the scope, schedule, inspections and any related construction. Call (206) 410-5100 for a Woodinville HVAC / mechanical quote.
Notes & caveats
Heat pump or AC condensate must drain per IMC. Combustion appliance: combustion air, venting, gas piping leak test. WA HB 1185 (HEEHRA): heat-pump rebates available through energy.wa.gov.
How to apply yourself
- 1. Confirm your parcel's zoning & overlays. Run an address lookup for your Woodinville HVAC / mechanical — we'll pull your specific lot polygon, zoning, setbacks, and any shoreline/ECA/historic overlays.
- 2. Assemble submittals (4).
- 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 HVAC subcontractor does the HVAC / mechanical work and pulls the permit, and Kolmo coordinates the scope, schedule, inspections and any related construction.
Licensed WA general contractor KOLMOL*753JS · bonded & insured
HVAC permits in Woodinville — FAQ
When does HVAC work need a permit in Woodinville?
Installing or replacing heating, cooling or ventilation equipment needs a mechanical permit in Woodinville: the City leaves the state mechanical code's exemptions unchanged (WMC 21.62.070), and those exempt only portable appliances, minor parts and small self-contained refrigeration units. Replacing an appliance in a single-family house is issued over the counter in the City's Permit Portal, with no plan review; with a building permit, the mechanical work is part of the Combined Building Permit. The wiring needs an electrical permit from L&I.
How much does an HVAC / mechanical permit cost in Woodinville?
Current fee per the Woodinville fee schedule: Mechanical permit + electrical permit (if new circuit) + plumbing permit (if condensate to drain). 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.