20027 30th Ave S, Seatac, WA 98198

Multifamily · Seatac · Seattle-Bellevue metro, WA

Imagery suggests: low-rise 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 AI estimate from public imagery; may be outdated.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 72 reachable multifamily buildings in Seatac. Larger than 26% of multifamily buildings in Seatac (median 23,400 SF), derived from assessor records.

Own this building?

Claim privately

Claiming is for you. Your mailing address is never shown; no offer reaches you unless you opt in.

Claimed owners can confirm facts, watch the estimate, and decide whether to reply.

Claim or manage this building

Building size: 5,488 SF, King County Assessor
Lot size: 16,329 SF, King County Assessor
Year built: 1961, King County Assessor
Stories: 2, King County Assessor
Predominant use: Rose Garden, King County Assessor
Units: 8, King County Assessor
Assessed value: $1,430,000, per the King County Assessor (not a market appraisal)
Assessed value per building SF: $260.57/SF, derived from assessor records
Lot coverage: 34%, derived from assessor records
Vintage: 1960s vintage
Zoning: CB-C, King County
County use code: Apartment
Construction (observed): masonry, AI estimate from public imagery
Parking (observed): surface lot, 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.

2911 S 200th St, Seatac · 0 mi · 5,396 SF · built 1963 · assessed $218.87/SF
2929 S 200th St, Seatac · 0 mi · 118,592 SF · built 2023 · assessed $202.20/SF
20024 30th Ave S, Seatac · 0 mi · 11,790 SF · built 1960 · assessed $256.06/SF
20220 International Blvd, Seatac · 0.1 mi · 428,990 SF · built 2025 · assessed $69.30/SF
19922 28th Ave S, Seatac · 0.2 mi · 312,174 SF · built 2025 · assessed $95.13/SF
19800 International Blvd, Seatac · 0.2 mi · 120,262 SF · built 1976 · assessed $268.81/SF

Want to talk to the owner? makeme1031 delivers a private, principal-to-principal letter to the owner of record. We never publish the owner's identity or address.

Sale history and market context

MakeMe Estimate: $1,532,511 (estimated market value), with a likely range of $1,360,391 to $1,748,169 (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 $192K per unit at the midpoint (8 units).

Current ownership dates to 1999 (about 27 years) per recorded transfers.

2020-10-26: $43,268 from Private party to Private party (non-market transfer), rec. 20201112002585

2011-04-20: transfer from Private party to Private party (non-market transfer), rec. 20110519000202

1999-04-16: $350,000 from Private party to Private party (non-market transfer), rec. 199904220621

1997-05-22: transfer from Private party to Private party (non-market transfer), rec. 199708131587

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 $501,000 (2011) to $1,430,000 (2026), up 185% over 15 years, per county tax rolls. The 2026 roll splits $1,430,000 into $718,400 land and $711,600 improvements.

Zoning: CB-C (per King County)

Lot: 16,329 sq ft

Nuisance flags: Airport noise, Other nuisance

Water: Water District (per King County)

Sewer: Public (per King County)

Access: Public

Street surface: Paved

Floor and use mix: Multiple Residence (Low Rise) 5,488 SF (county building sections)

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

Permit history

2024-11-07: Electrical, declared value $1,500 (Screened), permit 2411-1076-ELE

2024-03-07: Electrical, declared value $2,500 (Screened), permit 2402-1190-ELE

2021-05-25: Sign, declared value $1,500 (Complete), permit SGN21-0007

2020-12-29: Other, declared value $20,300 (Complete), permit BLD20-0244

2020-12-28: Electrical, declared value $1,200 (Complete), permit ELE20-0559

2020-12-02: Electrical, declared value $1,400 (Complete), permit ELE20-0525

2018-01-02: Remodel, declared value $2,500 (Complete), permit BLD17-0274

Source: King County permit records (newest first).