HVAC permits in Sammamish: fees, timeline & requirements (2026)
Everything you need to know about pulling an HVAC / mechanical permit in Sammamish, Washington — when one is required, what it costs, how long review takes, what documents are required, and which inspections you can expect. Cited to Sammamish Community Development.
Free lookup, no account needed — the office that issues the permit at your address, cited to Sammamish's source.
When does HVAC work need a permit in Sammamish?
WAC 51-52 (2021 IMC) and WAC 51-56 (2021 UPC) require mechanical permit for any equipment install, replacement, or relocation. WSEC R403 requires sizing per Manual J/S/D for new equipment.
How Sammamish adopted this rule
The threshold comes from the state code (WAC 51.52), which Sammamish adopts by reference in the provision quoted below.
“The 2021 Edition of the International Mechanical Code, as adopted by the State Building Code Council in Chapter 51-52 WAC, as published by the International Code Council, excluding Chapter 1, Administration, is hereby adopted by the City of Sammamish.”Source ↗verified 2026-10-02
What Sammamish says in its own permit handout
From Residential Mechanical Equipment Setback Agreement, published by Sammamish. This is the jurisdiction's own guidance on its permit process, not the ordinance text — where the two differ, the code governs.
“The City of Sammamish guidelines states the following: Air conditioning, heat pump, and generator units may not be installed within the interior setback without recorded agreement from adjacent property owner prior to permit issuance.”Handout ↗read 2026-09-05
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 Sammamish?
Kolmo Construction is a licensed Washington general contractor — KOLMOL*753JS, active through April 10, 2027, bonded and insured — working throughout Sammamish and King County. Kolmo manages the HVAC / mechanical job from start to finish: a licensed HVAC subcontractor performs the work and pulls the permit, and Kolmo coordinates the scope, schedule, inspections and any related construction. Call (206) 410-5100 for a Sammamish 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 Sammamish — 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: Sammamish Community Development ↗
- 4. Track review. Respond to reviewer comments promptly.
- 5. Pay issuance fees (Sammamish'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 Sammamish — FAQ
When does HVAC work need a permit in Sammamish?
WAC 51-52 (2021 IMC) and WAC 51-56 (2021 UPC) require mechanical permit for any equipment install, replacement, or relocation. WSEC R403 requires sizing per Manual J/S/D for new equipment.
How much does an HVAC / mechanical permit cost in Sammamish?
Sammamish's stand-alone residential mechanical permit is a $134 flat fee for each item, such as a forced air furnace, heat pump, air handling unit, water heater or duct work only; a combination mechanical permit is $134 for up to 3 items and $45 for each more. A new or altered circuit needs a City electrical permit, $92.33 up to $250 of electrical work. The City adds a 15% technology fee to each fee (2026 Fee Schedule). Apply via https://mybuildingpermit.com.