240 SW 312th St, Federal Way, WA 98023

Commercial · Federal Way · Seattle-Bellevue metro, WA

One of 118 reachable commercial buildings in Federal Way. Larger than 7% of commercial buildings in Federal Way (median 26,548 SF), derived from assessor records.

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Building size
1,836 SF, King County Assessor
Lot size
65,776 SF, King County Assessor
Year built
1950, King County Assessor
Stories
1, King County Assessor
Predominant use
Single-Family Residence, King County Assessor
Assessed value
$450,800, per the King County Assessor (not a market appraisal)
Assessed value per building SF
$245.53/SF, derived from assessor records
Lot coverage
3%, derived from assessor records
Vintage
1950s vintage
Zoning
RS7.2, King County
County use code
Single Family(Res Use/Zone)

Nearby comparable buildings

Same building type, by distance. Assessor facts only; not an opinion of value.

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Sale history and market context

MakeMe Estimate: $550,331 (estimated market value), with a likely range of $466,349 to $672,866 (half of recent verified sales in this segment landed inside that range). Based on 139 verified arm's-length comparable sales (through 2026-05-29). Not an appraisal. How this estimate works.

Source: King County recorded sales extract; buyer and seller shown only when a company or organization. Individual names are withheld.

Value over time

$178K$356K$533K$711K201120142017202020232026County appraised valueEstimated value (modeled range)

Solid line: county appraised value per King County tax rolls. Shaded range: our modeled estimate for each year, built from recorded arm's-length sales in the building's segment; years without enough sales stay unmodeled. Dots: recorded arm's-length sales. Not an appraisal. How this estimate works.

Land, site, and value history

Assessed value moved from $138,600 (2011) to $450,800 (2026), up 225% over 15 years, per county tax rolls. The 2026 roll splits $450,800 into $361,700 land and $89,100 improvements.

Taxes