321 Factory Ave N, Renton, WA 98057

Multifamily · Renton · Seattle-Bellevue metro, WA

Imagery suggests: garden apartments, 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 AI estimate from public imagery; may be outdated.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 302 reachable multifamily buildings in Renton. Larger than 51% of multifamily buildings in Renton (median 6,852 SF), derived from assessor records.

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Building size: 7,236 SF, King County Assessor
Lot size: 8,240 SF, King County Assessor
Year built: 1967, King County Assessor
Stories: 2, King County Assessor
Predominant use: 8 Unit Apt, King County Assessor
Units: 8, King County Assessor
Assessed value: $1,941,000, per the King County Assessor (not a market appraisal)
Assessed value per building SF: $268.24/SF, derived from assessor records
Lot coverage: 88%, derived from assessor records
Vintage: 1960s vintage
Zoning: R-8, King County
County use code: Apartment
Construction (observed): masonry, 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.

303 Factory Ave N, Renton · 0 mi · 3,840 SF · built 1979 · assessed $242.71/SF
351 Factory Ave N, Renton · 0.1 mi · 4,234 SF · built 1968 · assessed $230.28/SF
1405 N 4th St, Renton · 0.1 mi · 3,040 SF · built 1954 · assessed $241.45/SF
1421 N 3rd St, Renton · 0.1 mi · 3,840 SF · built 1977 · assessed $223.96/SF
355 Factory Ave N, Renton · 0.1 mi · 3,150 SF · built 1926 · assessed $279.05/SF
203 Meadow Ave N, Renton · 0.2 mi · 8,632 SF · built 1937 · assessed $268.54/SF

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Sale history and market context

MakeMe Estimate: $1,925,265 (estimated market value), with a likely range of $1,709,033 to $2,196,192 (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 $241K per unit at the midpoint (8 units).

Last sold: 1988-04-25 for $250,000 (recorded arm's-length sale).

Current ownership dates to 2025 per recorded transfers.

2 administrative transfers (no consideration), 2025 to 2025

2025-01-16: $1,116,000 from Private party to Private party (non-market transfer), rec. 20250117000132

2007-01-02: $850,000 from Private party to Private party (non-market transfer), rec. 20070116000141

2002-03-29: transfer from Private party to Private party (non-market transfer), rec. 20020613002239

1988-04-25: $250,000 from Private party to Private party, rec. 198804281077

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 $810,000 (2011) to $1,941,000 (2026), up 140% over 15 years, per county tax rolls. The 2026 roll splits $1,941,000 into $270,000 land and $1,671,000 improvements.

Zoning: R-8 (per King County)

Lot: 8,240 sq ft

Water: Water District (per King County)

Sewer: Public (per King County)

Access: Public

Street surface: Paved

Floor and use mix: Multiple Residence (Low Rise) 7,236 SF (county building sections)

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