18 1st St SE, Auburn, WA 98002

Commercial · Auburn · Seattle-Bellevue metro, WA

Imagery suggests: mid-rise multifamily, 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 AI estimate from public imagery; may be outdated.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 174 reachable commercial buildings in Auburn. Larger than 91% of commercial buildings in Auburn (median 20,000 SF), derived from assessor records.

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Building size: 169,313 SF, King County Assessor
Lot size: 59,728 SF, King County Assessor
Year built: 2016, King County Assessor
Stories: 4, King County Assessor
Predominant use: Il, Al, Mc, King County Assessor
Units: 129, King County Assessor
Assessed value: $34,727,800, per the King County Assessor (not a market appraisal)
Assessed value per building SF: $205.11/SF, derived from assessor records
Lot coverage: 283%, derived from assessor records
Vintage: 2010s vintage
Zoning: DUC, King County
County use code: Retirement Facility
Parking (observed): structured, AI estimate from public imagery
Frontage (observed): mid block, AI estimate from public imagery

Nearby comparable buildings

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

25 W Main St, Auburn · 0.1 mi · 57,316 SF · built 1979
307 Auburn Way S, Auburn · 0.2 mi · 1,428 SF · built 1954 · assessed $475/SF
202 N Division St, Auburn · 0.2 mi · 245,393 SF · built 1990 · assessed $284.78/SF
302 E Main St, Auburn · 0.2 mi · 14,000 SF · built 1923 · assessed $36.74/SF
220 Auburn Way S, Auburn · 0.2 mi · 2,200 SF · built 1964 · assessed $268.73/SF
27 D St SE, Auburn · 0.2 mi · 6,090 SF · built 1950

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Sale history and market context

MakeMe Estimate: $35,985,922 (estimated market value), with a likely range of $30,494,396 to $43,539,537 (half of recent verified sales in this segment landed inside that range). Based on 33 verified arm's-length comparable sales (through 2026-05-29). Not an appraisal. How this estimate works.

Current ownership dates to 2019 (about 7 years) per recorded transfers.

2019-01-29: $38,126,888 from Merrill Gardens LLC to Shi-III Merrill JV Company III LLLP (non-market transfer), rec. 20190129001006

4 administrative transfers (no consideration), 2015 to 2019

2013-12-27: $890,990 from Auburn City of to MW Holdings Auburn SW Block LLC (part of a 10-parcel sale; price is the whole deal), rec. 20131227000291

2007-10-23: $1,830,920 from Private party to Auburn City of (part of a 2-parcel sale; price is the whole deal), rec. 20071024000253

1997-01-01: $495,000 from Private party to Private party (part of a 2-parcel sale; price is the whole deal), rec. 199701030952

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 $108,000 (2010) to $34,727,800 (2026), up 32055% over 16 years, per county tax rolls. The 2026 roll splits $34,727,800 into $1,791,800 land and $32,936,000 improvements.

Zoning: DUC (per King County)

Lot: 59,728 sq ft

Water: Water District (per King County)

Sewer: Public (per King County)

Access: Public

Street surface: Paved

Floor and use mix: Home For The Elderly 137,095 SF; Underground Parking Structure 32,218 SF (county building sections)

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

Permit history

2023-02-15: Other (Screened), permit PLM23-0023

2023-01-19: Other (Screened), permit MEC22-0734

2015-07-15: Building, New, declared value $17,029,451 (Complete), permit BLD13-0544

2015-07-15: Other (Screened), permit GRA15-0007

2015-07-15: Other (Screened), permit MEC15-0021

2015-07-15: Other (Screened), permit PLM15-0018

2015-02-18: Other (Screened), permit GRA15-0002

Source: King County permit records (newest first).