15221 6th Ave SW, Burien, WA 98166

NNN Retail · Burien · Seattle-Bellevue metro, WA

Imagery suggests: retail strip center, 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 AI estimate from public imagery; may be outdated.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 282 reachable nnn retail buildings in Burien. Larger than 34% of nnn retail buildings in Burien (median 4,200 SF), derived from assessor records.

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Building size: 3,080 SF, King County Assessor
Lot size: 7,500 SF, King County Assessor
Year built: 1956, King County Assessor
Stories: 1, King County Assessor
Predominant use: Duna Restaurant, King County Assessor
Assessed value: $927,000, per the King County Assessor (not a market appraisal)
Assessed value per building SF: $300.97/SF, derived from assessor records
Lot coverage: 41%, derived from assessor records
Vintage: 1950s vintage
Zoning: MU-DT, King County
County use code: Retail Store
Construction (observed): masonry, AI estimate from public imagery
Parking (observed): surface lot, AI estimate from public imagery
Frontage (observed): corner, AI estimate from public imagery

Nearby comparable buildings

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

453 SW 153rd St, Burien · 0 mi · 5,880 SF · built 1962 · assessed $155.34/SF
450 SW 153rd St, Burien · 0 mi · 3,600 SF · built 1963 · assessed $260.78/SF
605 SW 152nd St, Burien · 0 mi · 2,800 SF · built 1955 · assessed $213.75/SF
444 SW 153rd St, Burien · 0 mi · 3,600 SF · built 1956 · assessed $165.11/SF
601 SW 153rd St, Burien · 0 mi · 6,960 SF · built 1958 · assessed $210.17/SF
457 SW 153rd St, Burien · 0 mi · 4,000 SF · built 1960 · assessed $231.18/SF

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Sale history and market context

MakeMe Estimate: $1,017,530 (estimated market value), with a likely range of $850,045 to $1,152,852 (half of recent verified sales in this segment landed inside that range). Based on 152 verified arm's-length comparable sales (through 2026-05-29). Not an appraisal. How this estimate works.

Last sold: 2017-04-20 for $686,000 (recorded arm's-length sale).

Current ownership dates to 2017 (about 9 years) per recorded transfers.

2017-04-20: $686,000 from Private party to Private party, rec. 20170424000863

2011-08-29: transfer from Private party to Private party (non-market transfer), rec. 20110830000353

2008-06-05: $640,000 from Private party to Private party, rec. 20080606001228

2005-10-07: $550,000 from Private party to Private party, rec. 20051019001124

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 $462,200 (2011) to $927,000 (2026), up 101% over 15 years, per county tax rolls. The 2026 roll splits $927,000 into $225,000 land and $702,000 improvements.

Zoning: MU-DT (per King County)

Lot: 7,500 sq ft

Water: Water District (per King County)

Sewer: Public (per King County)

Access: Public

Street surface: Paved

Floor and use mix: Restaurant, Table Service 3,080 SF (county building sections)

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

Permit history

2024-03-13: Remodel, declared value $30,000 (Complete), permit BLD-22-1997

2024-01-11: Other, declared value $3,000 (Complete), permit FPS23-4344

2023-11-29: Other, declared value $6,000 (Complete), permit MEC-23-1283

2023-10-19: Plumbing, declared value $600 (Complete), permit PLM23-1886

2022-12-15: Electrical, declared value $2,000 (Complete), permit ELE-22-2872

2022-11-04: Remodel, declared value $30,000 (Complete), permit BLD-22-1997

2022-08-08: Electrical, declared value $2,000 (Complete), permit ELE-22-1875

2022-07-25: Plumbing, declared value $2,000 (Screened), permit PLM-22-1736

2019-03-12: Remodel, declared value $1,500 (Screened), permit BLD-19-0247

2016-05-23: Remodel (Screened), permit BLD-16-1158

Source: King County permit records (newest first).