1035 S 320th St, Federal Way, WA 98003

Office · Federal Way · Seattle-Bellevue metro, WA

Imagery suggests: single-story office, appears multi-tenant. AI estimate from public imagery. In recent public imagery (2026-06), the building appears well maintained. AI estimate from public imagery; may be outdated.

One of 171 reachable office buildings in Federal Way. Larger than 32% of office buildings in Federal Way (median 9,872 SF), derived from assessor records.

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Building size: 5,365 SF, King County Assessor
Lot size: 30,750 SF, King County Assessor
Year built: 1979, King County Assessor
Stories: 1, King County Assessor
Predominant use: Office, King County Assessor
Assessed value: $1,232,900, per the King County Assessor (not a market appraisal)
Assessed value per building SF: $229.80/SF, derived from assessor records
Lot coverage: 17%, derived from assessor records
Vintage: 1970s vintage
Zoning: CF, King County
County use code: Office Building
Construction (observed): wood frame, AI estimate from public imagery
Parking (observed): surface lot, AI estimate from public imagery

Nearby comparable buildings

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

1045 S 320th St, Federal Way · 0 mi · 3,765 SF · built 1980 · assessed $300/SF
1025 S 320th St, Federal Way · 0 mi · 8,608 SF · built 1977 · assessed $172.25/SF
1014 S 320th St, Federal Way · 0 mi · 9,680 SF · built 1969 · assessed $271.89/SF
1300 S 320th St, Federal Way · 0.2 mi · 6,993 SF · built 1973 · assessed $277.51/SF
720 S 320th St, Federal Way · 0.2 mi · 8,960 SF · built 1983 · assessed $310.90/SF
728 S 320th St, Federal Way · 0.2 mi · 9,780 SF · built 1983 · assessed $310.91/SF

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Sale history and market context

MakeMe Estimate: $1,400,439 (estimated market value), with a likely range of $1,265,650 to $1,824,706 (half of recent verified sales in this segment landed inside that range). Based on 55 verified arm's-length comparable sales (through 2026-05-29). Not an appraisal. How this estimate works.

Last sold: 1997-06-05 for $665,000 (recorded arm's-length sale).

Current ownership dates to 2011 (about 15 years) per recorded transfers.

2011-05-02: $675,000 from Private party to CJ Shon LLC (non-market transfer), rec. 20110505000475

1997-06-05: $665,000 from Private party to Washington First International Bank, rec. 199706111032

1995-09-14: $550,000 from Private party to Private party (non-market transfer), rec. 199509151401

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

Value over time

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 $644,900 (2011) to $1,232,900 (2026), up 91% over 15 years, per county tax rolls. The 2026 roll splits $1,232,900 into $1,076,200 land and $156,700 improvements.

Zoning: CF (per King County)

Lot: 30,750 sq ft

Water: Water District (per King County)

Sewer: Public (per King County)

Access: Public

Street surface: Paved

Floor and use mix: Office Building 3,500 SF; Dental Office/Clinic 1,865 SF (county building sections)

County districts report (schools, fire, sewer, council; on kingcounty.gov)

1035 S 320th St, Federal Way, WA 98003

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Nearby comparable buildings

Sale history and market context

Value over time

Land, site, and value history

Taxes

Permit history