Heat pump permits in City of Issaquah: fees, timeline & requirements (2026)
Everything you need to know about pulling a heat pump / ductless mini-split permit in City of Issaquah, Washington — when one is required, what it costs, how long review takes, what documents are required, and which inspections you can expect. Cited to Community Planning & Development.
Free lookup, no account needed — your lot polygon, zoning, setbacks and overlays, cited to City of Issaquah's source.
City of Issaquah: we don't yet have an authoritative heat pump / ductless mini-split rule on file for this city. Until we verify, fall back to Washington-state baseline code (IRC/IBC/WSEC) and the county building department. Call Community Planning & Development for project-specific guidance.
Who can do this work in City of Issaquah?
Kolmo Construction is a licensed Washington general contractor — KOLMOL*753JS, active through April 10, 2027, bonded and insured — working throughout City of Issaquah and King County. Kolmo prepares the drawings and submittals, files the heat pump / ductless mini-split permit with Community Planning & Development, carries the project through review and inspections, and performs the construction. Call (206) 410-5100 for a City of Issaquah heat pump / ductless mini-split quote.
Heat pump permit fee estimate in City of Issaquah
Worked example for a $16,000 heat pump / ductless mini-split project (building permit). Your actual fee scales with project valuation.
| Building permit fee | $370.95 |
| Plan review | $241.12 |
| Technology surcharge | $36.72 |
| WA state surcharge | $6.50 |
| Estimated total | $655.29 |
$2,001.00 to $25,000.00: $96.55 for the first $2,000.00 plus $19.60 for each additional $1,000.00, or fraction thereof (Building Permit Fee Chart, updated 11/20/2025) Computed from City of Issaquah's adopted fee schedule · source ↗. Land use, fire and engineering review, intake, impact and utility fees, where they apply, are charged separately.
How to apply yourself
- 1. Confirm your parcel's zoning & overlays. Run an address lookup for your City of Issaquah heat pump / ductless mini-split — we'll pull your specific lot polygon, zoning, setbacks, and any shoreline/ECA/historic overlays.
- 2. Assemble submittals (site plan, scope-of-work, photos).
- 3. Submit through the city portal: Community Planning & Development ↗
- 4. Track review. Respond to reviewer comments promptly.
- 5. Pay issuance fees (see fee schedule) and pick up the permit. Inspection card travels with the job.
Or have Kolmo do it
We pull heat pump / ductless mini-split permits in City of Issaquah every month. We prepare the drawings and submittals, file with Community Planning & Development, handle reviewer comments, and build the project.
Licensed WA general contractor KOLMOL*753JS · bonded & insured
Heat pump permits in City of Issaquah — FAQ
How much does a heat pump / ductless mini-split permit cost in City of Issaquah?
For a $16,000 heat pump / ductless mini-split project, the estimated City of Issaquah permit fee is about $655.29 (building fee $370.95 + plan review $241.12 + surcharges) from City of Issaquah's adopted fee schedule. Land use, fire and engineering review, intake, impact and utility fees, where they apply, are charged separately.