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4001 1st Ave S, Seattle, WA 98134 Property Records

King County property record for 4001 1st Ave S, Seattle, WA 98134

Property Summary

Property TypeWarehouse, Storage
Details188,681 sqft · built 1946
Lot Size6.77 acres (295,308 sqft)
OwnerCompany Name on Record
Last Sale$53,453,000 (Apr 2021)
Tax Bill$591,746 (2026)
Deeds & MortgagesMay 2021 Mortgage
Apr 2021 Sale
Flood ZoneZone X (minimal risk)
APN182404-9060

Property Details

APN / Parcel Number

Primary APN182404-9060
Alternative APN
  • 182404906006

Interior

Stories1 Story
Building Area188,681 sqft Gross Area

Exterior

Year BuiltBuilt 1946
Effective Year BuiltEffective 2006
Architectural StyleCustom Design
Construction TypeMasonry / Concrete Block
Fire ResistanceMasonry Walls, Wood Interior
Lot Area295,308 sqft
Garage Area8,061 sqft
Lawn SprinklersLawn Sprinklers

Utilities, Heating & Cooling

Heating SystemSpace Heater
SewerMunicipal
Water SourceCommercial

Location & Zoning

Account Number182404906006
Street Address4001 1ST AVE S
CitySEATTLE
StateWA
Zip98134-2339
Property CategoryIndustrial
Property TypeIndustrial > Warehouse, Storage
Local Zoning CodeMML U/85
Legal DescriptionBEG ON W LN OF 1ST AVE S 1110 FT S OF S LN OF SPOKANE ST TH S ALG SD W AVE LN 1060.61 FT M/L TO TR CONVYD TO N P RY CO UNDER AUD FILE # 2953477 TH N 41-01-45 W 157.95 FT TH N 32-37-45 W 50.48 FT TH N 30-46-45 W 49.84 FT TH N 33-08-15 W 30.51 FT TH N
Legal Range04
Legal Township24
Legal Section18
Legal Block60
Legal Lot NumberP
JurisdictionKING WA
Township / Civil DivisionSEATTLE
Census Block Group3
Census Block3116
Census Tract9300

Owner

Source: King County records, as of August 6, 2026

Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.

Owner of RecordCompany Name on Record
Mailing Address11225 SE 6TH ST, 215, BELLEVUE, WA 98004-6477
Owner TypeCompany
VestingLimited Partnership

Deeds, Mortgages & Sale History

DateDocument
May 14, 2021Deed of Trust, Mortgage · Commercial Mortgage
EQUITRUST LIFE INSURANCE COMPANY
Apr 1, 2021Warranty Deed, Transfer
FIDELITY NATIONAL TITLE

Assessor's Deed Record

Deed NamesName on Deed
Last SaleApr 1, 2021 · Amount on Record
Deed SaleApr 1, 2021 · Amount on Record
Prior SaleMar 19, 2008 · Amount on Record
Deed Document Number2021265
Record UpdatedOct 29, 2026

May 2021: Deed of Trust, Mortgage

Document TypeDeed of Trust
JurisdictionKING WA
Property Address4001 1ST AVE S, SEATTLE, WA 98134-2339
Transaction TypeMortgage
Record UpdatedMay 26, 2021

Transferred To (Grantee/Buyer)

NameVerified Name
Address1508 BROADWAY ST, VANCOUVER, WA 98663-3434

Mortgage

Document Number0000002066
DateMay 14, 2021
Instrument20210514002066
Lender
NameEQUITRUST LIFE INSURANCE COMPANY
TypeNon-Lending Institution
AddressCHICAGO, IL 60606
Agreement
TypeCommercial Mortgage
AmountAmount Recorded

April 2021: Warranty Deed, Transfer

Document TypeWarranty Deed
JurisdictionKING WA
Recording DateApr 1, 2021
Property Address4001 1ST AVE S, SEATTLE, WA 98134-2339
Document Number0000000265
Instrument DateMar 29, 2021
Instrument20210401000265
Transaction TypeTransfer
Record UpdatedJul 30, 2021
Title CompanyFIDELITY NATIONAL TITLE

Transaction

AmountAmount Recorded
Tax$0.00
Amount AccuracyFull Amount Stated
Additional
  • Arm's Length

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name

Tax Assessment & Valuation

Source: King County assessment roll, as of July 7, 2026

Property Jurisdictions

TypeName
StateWashington
CountyKing County
MunicipalitySeattle City
Unified School DistrictSeattle Public Schools (PK - 12)

Tax Bill & Assessment History

YearTax BillAssessed ValueAssessed Market Value
2026$591,746.00 (+6.36%)
2025$52,800,000 (-1.43%) Land $22,148,100 Building $30,651,900$52,800,000 (-1.43%) Land $22,148,100 Building $30,651,900
2024$556,341.00 (+16.74%)$53,564,700 (+3.31%) Land $22,148,100 Building $31,416,600$53,564,700 (+3.31%) Land $22,148,100 Building $31,416,600
2022$476,563.00$51,848,600 Land $16,241,900 Building $35,606,700$51,848,600 Land $16,241,900 Building $35,606,700

Assessed value and assessed market value are set for property tax purposes and are not market price estimates.

Flood

Source: FEMA National Flood Hazard Layer, effective September 23, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026

FEMA Flood ZoneZone X
minimal risk
Flood Insurance RequirementNot required
lenders may require it
Nearby Flood Policies1 in force

Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.

Wildfire

Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024

Wildfire RiskNot rated
no burnable land within ember reach

Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.

Drinking Water

Source: EPA Safe Drinking Water Information System, as of September 2026

Water SystemSEATTLE PUBLIC UTILITIES
serves 1,161,961 people · EPA ID WA5377050
Water SourceSurface water
Last State InspectionJul 2025
Lead2 ppb (2025)
action level 15 ppb

Violations Reported to EPA

Water QualityNone
last 10 years
Treatment and ProcedureNone
last 10 years
Monitoring and ReportingNone
last 3 years

Results are for the whole water system, not water tested at this address; lead at the tap also depends on the building's own pipes. This system sells water to local utilities; the supplier billing this address may be one of them.

Internet Providers

Source: FCC Broadband Data Collection, based on 30 locations within half a mile, as of December 31, 2025

ProviderMax Down / Up (Mbps)
Xfinity
Cable		2,000 / 250

May also be available: CenturyLink, T-Mobile, Verizon.

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