MakeMe Estimate: $1.32M (estimated market value), with a likely range of $1.07M to $1.53M (half of recent verified sales in this segment landed inside that range). Based on 8 verified arm's-length comparable sales (through 2026-06-01). Not an appraisal. How this estimate works.
lower confidence: 0 comparable sales within 3 miles; nearest 4.2 mi. This property type carries wider measured error; treat the estimate as a starting point. Comparable-sale caveat: the estimate is 27% above the $304.75/SF median of the shown comparable sales.
Recorded arm's-length sales of similar buildings nearby; nearer and more recent sales rank first. Buyer and seller names are withheld. Get this data via API.
Last sold: 2003-09-06 for $606,000 (recorded arm's-length sale).
Current ownership dates to 2003 (about 23 years) per recorded transfers.
2004-03-14: transfer from Seg 172nd Reverse LLC to Seg 172nd LLC (non-market transfer), rec. 20040420001386
2003-09-06: $606,000 from Private party to Seg 172nd Reverse LLC, rec. 20030915001705
2000-02-24: transfer from Private party to City of Covington (non-market transfer), rec. 20000621001460
1996-12-23: $40,000 from Private party to Private party (non-market transfer), rec. 199701030447
1992-08-26: $140,700 from Private party to Watchtower Bible & Tract Assoc (non-market transfer), rec. 199208281754
Source: King County recorded sales extract; buyer and seller shown only when a company or organization. Individual names are withheld.
Value over time
Dark line: county assessed value per King County tax rolls. Blue line: our estimate; dashed years are a modeled backcast built from recorded arm's-length sales in the building's segment, not estimates published at the time, and years without enough sales stay unmodeled. The shaded range is the model's measured error band; about half of verified sales in the segment land inside it. Diamonds: recorded arm's-length sales. Not an appraisal. How this estimate works.
Land, site, and value history
Assessed value moved from $769,700 (2011) to $1,234,200 (2026), up 60% over 15 years, per county tax rolls. The 2026 roll splits $1,234,200 into $212,300 land and $1,021,900 improvements.
Zoning: MC (per King County)
Lot: 6,246 sq ft
Water: Water District (per King County)
Sewer: Public (per King County)
Access: Public
Street surface: Paved
Floor and use mix: Dental Office/Clinic 3,412 SF (county building sections)