Federal Way, WA property records
As of September 2026, Federal Way, WA has 23,519 parcels on record, with a median assessed value of $584,000 and a median year built of 1979, compiled from King County assessor, treasurer, permit, FEMA, and DNR records aggregated by VetTheHome. As of September 2026, 16 of those 23,519 parcels (0.1%) sit within a FEMA Special Flood Hazard Area, per King County GIS and FEMA flood records aggregated by VetTheHome.
Updated September 2026 · refreshed weekly
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Federal Way by the numbers
Computed 9/7/2026 from county assessor, treasurer, permit, FEMA, and DNR records.
What the public records show
In the 12 months through September 2026, 673 properties in Federal Way changed hands at a median recorded sale price of $650,000, and 3 building permits were filed, per King County records. As of September 2026, 3,676 parcels in Federal Way (16%) rely on on-site septic systems rather than municipal sewer, per King County parcel records aggregated by VetTheHome. 2 (0.0%) of parcels in Federal Way sit in high liquefaction-susceptibility zones mapped by the Washington State DNR. As of September 2026, 467 parcels in Federal Way carried an unpaid property-tax balance with the King County Treasurer, per records aggregated by VetTheHome. As of September 2026, 14 homes in Federal Way were resold within 12 months of a prior arms-length sale at a median gross price change of +57.1% 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 Federal Way 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.