HVAC permits in City of Sammamish: fees, timeline & requirements (2026)
Everything you need to know about pulling a HVAC / mechanical permit in City of 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 Apply via MyBuildingPermit.com..
Free lookup, no account needed — your lot polygon, zoning, setbacks and overlays, cited to City of Sammamish's source.
When does a HVAC / mechanical need a permit in City of 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 City of Sammamish adopted this rule
The threshold comes from the state code (WAC 51.52), which City of 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. (Ord. O2024-564 § 1 (Att. A); Ord. O2020-522 § 1 (Att. A); Ord. O2017-440 § 1 (Att. A); Ord. O2016-409 § 1 (Att. A); Ord. O2013-345 § 1 (Att. A); Ord. O2010-283 § 1 (Att. A); Ord. O2007-214 § 1; Ord.”Source ↗verified 2026-05-29
What City of Sammamish says in its own permit handout
From Residential Mechanical Equipment Setback Agreement, published by City of 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, electrical-01-or-02 (for heat pump tie-in)
Who can do this work in City of Sammamish?
Kolmo Construction is a licensed Washington general contractor — KOLMOL*753JS, active through April 10, 2027, bonded and insured — working throughout City of Sammamish and King County. Kolmo prepares the drawings and submittals, files the HVAC / mechanical permit with Apply via MyBuildingPermit.com., carries the project through review and inspections, and performs the construction. Call (206) 410-5100 for a City of 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. Confirm your parcel's zoning & overlays. Run an address lookup for your City of Sammamish 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: Apply via MyBuildingPermit.com. ↗
- 4. Track review. Respond to reviewer comments promptly.
- 5. Pay issuance fees (Mechanical permit + electrical permit (if new circuit) + plumbing permit (if condensate to drain). Apply via https://mybuildingpermit.com.) and pick up the permit. Inspection card travels with the job.
Or have Kolmo do it
We pull HVAC / mechanical permits in City of Sammamish every month. We prepare the drawings and submittals, file with Apply via MyBuildingPermit.com., handle reviewer comments, and build the project.
Licensed WA general contractor KOLMOL*753JS · bonded & insured
HVAC permits in City of Sammamish — FAQ
When does a HVAC / mechanical need a permit in City of 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 a HVAC / mechanical permit cost in City of Sammamish?
Current fee per the City of Sammamish fee schedule: Mechanical permit + electrical permit (if new circuit) + plumbing permit (if condensate to drain). Apply via https://mybuildingpermit.com.. Plus ancillary plan-review/tech-surcharge fees per city schedule.