HVAC permits in Kent: fees, timeline & requirements (2026)
Everything you need to know about pulling an HVAC / mechanical permit in Kent, Washington — when one is required, what it costs, how long review takes, what documents are required, and which inspections you can expect. Cited to Kent Economic and Community Development.
Free lookup, no account needed — the office that issues the permit at your address, cited to Kent's source.
When does HVAC work need a permit in Kent?
A mechanical permit is required for heating/cooling systems, HVAC, gas pipes, gas water-heater replacements, and other mechanical systems; portable appliances are exempt. Typically processed within 2–3 business days.
In the source's own words
“For heating and cooling systems, HVAC, gas pipes, gas hot water tank replacements, and other mechanical systems.”Source ↗verified 2026-05-29
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
Mechanical contractor
Who can do this work in Kent?
Kolmo Construction is a licensed Washington general contractor — KOLMOL*753JS, active through April 10, 2027, bonded and insured — working throughout Kent 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 Kent 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. Check who issues the permit. Run an address lookup for your HVAC work in Kent — we'll confirm which office issues the permit at that address.
- 2. Assemble submittals: the 4 documents under Required submittals above.
- 3. Submit through the city portal: Kent Economic and Community Development ↗
- 4. Track review (typical: 2–3 days). Respond to reviewer comments promptly.
- 5. Pay issuance fees (Kent'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 Kent — FAQ
When does HVAC work need a permit in Kent?
A mechanical permit is required for heating/cooling systems, HVAC, gas pipes, gas water-heater replacements, and other mechanical systems; portable appliances are exempt. Typically processed within 2–3 business days.
How much does an HVAC / mechanical permit cost in Kent?
Kent prices a mechanical permit as an issuance fee plus a fee for each unit, with plan review at 25% of the permit fee (Resolution 2052, Exhibit D). Those amounts were set for 2023 and rise with the Seattle-area CPI-W each January 1, and the City does not post its current figures, so the Permit Center (253-856-5300) quotes the 2026 amounts. A new circuit needs an L&I electrical permit, at L&I's fees. Apply through the City of Kent Permit Portal (https://sso.kentwa.gov/).
How long does Kent take to review an HVAC / mechanical permit?
Typical review window: 2–3 days.