355 15th Ave, Seattle, WA 98122

Multifamily · Seattle · Seattle-Bellevue metro, WA

Imagery suggests: mid-rise mixed-use, 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 AI estimate from public imagery; may be outdated.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 5,391 reachable multifamily buildings in Seattle. Larger than 75% of multifamily buildings in Seattle (median 9,444 SF), derived from assessor records.

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Building size: 23,292 SF, King County Assessor
Lot size: 8,152 SF, King County Assessor
Year built: 2022, King County Assessor
Stories: 4, King County Assessor
Predominant use: Betula Apartments, King County Assessor
Units: 50, King County Assessor
Assessed value: $8,074,300, per the King County Assessor (not a market appraisal)
Assessed value per building SF: $346.66/SF, derived from assessor records
Lot coverage: 286%, derived from assessor records
Vintage: 2020s vintage
Zoning: NC1-40 (M), King County
County use code: Apartment(Mixed Use)
Construction (observed): wood frame, AI estimate from public imagery
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.

324 15th Ave, Seattle · 0 mi · 11,232 SF · built 1984
1315 E Jefferson St, Seattle · 0.1 mi · 29,549 SF · built 2015 · assessed $266.17/SF
1617 E Jefferson St, Seattle · 0.1 mi · 10,492 SF · built 1968 · assessed $340.55/SF
1220 E Remington Ct, Seattle · 0.1 mi · 6,480 SF · built 1912 · assessed $358.95/SF
1220 E Jefferson St, Seattle · 0.1 mi · 15,456 SF · built 1909 · assessed $303.36/SF
1212 E Remington Ct, Seattle · 0.1 mi · 8,218 SF · built 1908 · assessed $358.48/SF

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Sale history and market context

MakeMe Estimate: $8,090,484 (estimated market value), with a likely range of $7,181,821 to $9,228,992 (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 $162K per unit at the midpoint (50 units).

Last sold: 2020-12-10 for $2,700,000 (recorded arm's-length sale).

Current ownership dates to 2020 (about 6 years) per recorded transfers.

2020-12-10: $2,700,000 from Dep Holdings LLC to Betula House LLC, rec. 20201210001002

2017-07-21: transfer from Dep Holdings LLC to Private party, rec.

2014-12-16: $575,000 from TL Investment Group LLC to Dep Holdings LLC, rec. 20141231000019

2010-12-03: $475,000 from Private party to TL Investment Group LLC, rec. 20101215001887

3 administrative transfers (no consideration), 1990 to 2007

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 $8,143,882 (2024) to $8,074,300 (2026), down 1% over 2 years, per county tax rolls. The 2026 roll splits $8,074,300 into $0 land and $8,074,300 improvements.

Zoning: NC1-40 (M) (per King County)

Lot: 8,152 sq ft

Nuisance flags: Traffic noise

Water: Water District (per King County)

Sewer: Public (per King County)

Access: Public

Street surface: Paved

Floor and use mix: Apartment 21,684 SF; Office Building 804 SF; Restaurant, Table Service 804 SF (county building sections)

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

Permit history

2024-04-25: Other, permit 7021640-RF

2024-02-29: Remodel, declared value $6,000, permit 6991959-CN

2024-02-12: Electrical, declared value $10,000, permit 7009207-EL

2024-01-18: Remodel, declared value $159,010, permit 6987470-CN

2023-12-01: Other, declared value $5,000, permit 6994344-CN

2017-08-22: Building, New, declared value $2,135,101 (Complete), permit 6538271

2017-08-22: Demolition (Complete), permit 6555357

Source: King County permit records (newest first).