King County HVAC property data.
King County (county seat: Seattle) is the most populous county in Washington, with 2,287,171 residents centered on Seattle and the Puget Sound technology corridor. Sustained demand has driven the median owner-occupied home value to $859,900 (ACS 2020-2024), among the highest in the country, while 55.4% of occupied housing units are owner-occupied.
King County, WA
See King County owners before you buy.
A live sample from the county source — search by owner name, address, or APN. The full HVAC list ships with owner, mailing, parcel detail, and lineage on every record.
Loading King County parcels…
Get the full dataset| APN | Owner | Address | Land use | Year | Assessed value |
|---|---|---|---|---|---|
Get the King County HVAC list
The complete county file — owner, mailing, assessor value, absentee flag, full lineage — priced per record.
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What's in the dataset.
Built for Local companies & franchises.
Owner-occupied King County homes scored by system age and year built — replacement-cycle timing, not price-shopper traffic. System age, year built, and owner-occupancy — built to target full-system replacement, not the cheapest quote.