Renton, WA property records
As of November 2026, Renton, WA has 39,275 parcels on record, with a median assessed value of $742,000 and a median year built of 1979, compiled from King County assessor, treasurer, permit, FEMA, and DNR records aggregated by VetTheHome. As of November 2026, 130 of those 39,275 parcels (0.3%) sit within a FEMA Special Flood Hazard Area, per King County GIS and FEMA flood records aggregated by VetTheHome.
Updated November 2026 · refreshed weekly
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Renton by the numbers
Computed 11/9/2026 from county assessor, treasurer, permit, FEMA, and DNR records.
What the public records show
In the 12 months through November 2026, 1,157 properties in Renton changed hands at a median recorded sale price of $768,000, and 2,555 building permits were filed, per King County records. As of November 2026, 7,820 parcels in Renton (20%) rely on on-site septic systems rather than municipal sewer, per King County parcel records aggregated by VetTheHome. 2,824 (7.2%) of parcels in Renton sit in high liquefaction-susceptibility zones mapped by the Washington State DNR. As of November 2026, 619 parcels in Renton carried an unpaid property-tax balance with the King County Treasurer, per records aggregated by VetTheHome. As of November 2026, 15 homes in Renton were resold within 12 months of a prior arms-length sale at a median gross price change of +34.5% between the two sales, per King County sales records aggregated by VetTheHome — local flip context, not a reliable rate given the small count (gross price change is a price difference, not profit, and excludes renovation and holding costs). Every figure here is compiled from public records and refreshed weekly; search any Renton address below for parcel-level permit history, tax breakdown, flood and seismic hazards, and septic status.
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Explore aggregate King County property data by city — flood, septic, permits, taxes and more.