5218 20th Ave NW, Seattle, WA 98107

Multifamily · Seattle · Seattle-Bellevue metro, WA

One of 5,391 reachable multifamily buildings in Seattle. Larger than 54% of multifamily buildings in Seattle (median 9,444 SF), derived from assessor records.

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Building size: 10,416 SF, King County Assessor
Lot size: 4,200 SF, King County Assessor
Year built: 1902, King County Assessor
Stories: 3, King County Assessor
Predominant use: Apartment Mixed-Use, King County Assessor
Units: 12, King County Assessor
Assessed value: $3,026,900, per the King County Assessor (not a market appraisal)
Assessed value per building SF: $290.60/SF, derived from assessor records
Lot coverage: 248%, derived from assessor records
Vintage: pre-war vintage
Zoning: NC3-75 (M), King County
County use code: Apartment(Mixed Use)
Parking (observed): street only, 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.

5343 Tallman Ave NW, Seattle · 0.1 mi · 318,835 SF · built 2014 · assessed $290.70/SF
1819 NW Central Pl, Seattle · 0.1 mi · 24,948 SF · built 1960 · assessed $337.58/SF
5227 Leary Ave NW, Seattle · 0.1 mi · 30,200 SF · built 1911 · assessed $265.73/SF
1903 NW Market St, Seattle · 0.1 mi · 27,085 SF · built 1909 · assessed $222.04/SF
5209 Russell Ave NW, Seattle · 0.1 mi · 36,000 SF · built 1964 · assessed $262.11/SF
5200 Ballard Ave NW, Seattle · 0.1 mi · 11,563 SF · built 1900 · assessed $354.66/SF

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Sale history and market context

MakeMe Estimate: $2,880,611 (estimated market value), with a likely range of $2,557,082 to $3,285,976 (half of recent verified sales in this segment landed inside that range). Based on 667 verified arm's-length comparable sales (through 2026-05-29). Not an appraisal. How this estimate works. About $240K per unit at the midpoint (12 units).

Last sold: 2024-12-20 for $3,388,000 (recorded arm's-length sale).

Current ownership dates to 2024 (about 2 years) per recorded transfers.

2024-12-20: $3,388,000 from Louisa Building LLC to Ballard Louisa LLC, rec. 20250102000409

2011-01-14: transfer from Private party to Louisa Building LLC (non-market transfer), rec. 20110119000638

1996-06-20: $735,000 from Louisa Partnership the to Private party, rec. 199606261581

1996-06-20: transfer from Private party to Private party (non-market transfer), rec. 199606261580

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 $1,357,600 (2011) to $3,026,900 (2026), up 123% over 15 years, per county tax rolls. The 2026 roll splits $3,026,900 into $1,722,000 land and $1,304,900 improvements.

Zoning: NC3-75 (M) (per King County)

Lot: 4,200 sq ft

Water: Water District (per King County)

Sewer: Public (per King County)

Access: Public

Street surface: Paved

Floor and use mix: Apartment 6,102 SF; Open Office 2,317 SF; Loft 1,997 SF (county building sections)

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