Des Moines, WA property records
As of September 2026, Des Moines, WA has 8,768 parcels on record, with a median assessed value of $587,000 and a median year built of 1966, compiled from King County assessor, treasurer, permit, FEMA, and DNR records aggregated by VetTheHome. As of September 2026, 30 of those 8,768 parcels (0.3%) 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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Des Moines 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, 255 properties in Des Moines changed hands at a median recorded sale price of $600,000, and 6 building permits were filed, per King County records. As of September 2026, 921 parcels in Des Moines (11%) rely on on-site septic systems rather than municipal sewer, per King County parcel records aggregated by VetTheHome. 39 (0.4%) of parcels in Des Moines sit in high liquefaction-susceptibility zones mapped by the Washington State DNR. As of September 2026, 235 parcels in Des Moines carried an unpaid property-tax balance with the King County Treasurer, per records aggregated by VetTheHome. Every figure here is compiled from public records and refreshed weekly; search any Des Moines 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.