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1600 E Jefferson St, Seattle, WA 98122 Property Records

King County property record for 1600 E Jefferson St, Seattle, WA 98122

Property Summary

Property TypeMedical Building
Details108,618 sqft · built 1987
Lot Size0.629 acres (27,424 sqft)
OwnerCompany Name on File
Last Sale$129,720 (Apr 2007)
Tax Bill$56,602 (2022)
Deeds & MortgagesNov 2023 Refinance
Nov 2023 Assignment
Flood ZoneZone X (minimal risk)
APN794260-0570

Property Details

APN / Parcel Number

Primary APN794260-0570
Alternative APNs
  • 794260057003
  • 794260057094

Interior

Stories7 Stories
Building Area108,618 sqft Total Area
ElevatorElevator

Exterior

Year BuiltBuilt 1987
Effective Year BuiltEffective 2000
Construction TypeConcrete
Fire ResistanceFireproof Reinforced Concrete
Lot Area27,424 sqft (0.629 acres)
Lawn SprinklersLawn Sprinklers

Utilities, Heating & Cooling

Heating SystemHeat Pump
SewerMunicipal
Water SourceCommercial

Location & Zoning

Account Number794260057094
Street Address1600 E JEFFERSON ST
CitySEATTLE
StateWA
Zip98122-5698
Property CategoryCommercial
Property TypeCommercial > Office > Medical Building
Local Zoning CodeMIO-105-LR3
Legal DescriptionSQUIRE PARK ADD PCL F SEA BLA #3003656 REC #20061101900006 SD BLA BEING BLOCKS 3 & 4 SD ADD TGW VAC RDS ADJ POR EXEMPT
Legal Range04
Legal Township25
Legal Section33
Legal QuarterSW
Legal SubdivisionSQUIRE PARK ADD
Legal Block4
Legal Lot Number15-21 16
JurisdictionKING WA
Township / Civil DivisionSEATTLE
Census Block Group1
Census Block1021
Census Tract8700

Owner

1600 E Jefferson St, a commercial property, is owned by a company that bought it in April 2007 and is owner-occupied.

Source: King County records, as of February 23, 2026

Owner of RecordCompany Name on File
Mailing Address12201 TUKWILA INTERNATIONAL BLVD # BLVD4FLR, BLVD4FLR, TUKWILA, WA 98168-5121
OccupancyOwner Occupied
Owner TypeCompany

Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.

Deeds, Mortgages & Sale History

DateDocument
Nov 16, 2023Deed of Trust, Mortgage · Stand-Alone Refinance
GIM COMMERCIAL MORTGAGE LOAN FUND LP
Nov 16, 2023Assignment of Lease, Transfer

Assessor's Deed Record

Deed NamesName on Deed
Last SaleApr 25, 2007 · Amount on File
Deed SaleApr 25, 2007 · Amount on File
Prior SaleJun 22, 2005
Deed Document Number20070427003438
Record UpdatedJun 8, 2026

November 2023: Deed of Trust, Mortgage

Document TypeDeed of Trust
JurisdictionKING WA
Property Address1600 E JEFFERSON ST, SEATTLE, WA 98122-5698
Transaction TypeMortgage
Record UpdatedDec 7, 2023

Transferred To (Grantee/Buyer)

NameVerified Name

Mortgage

Document Number0000000129
DateNov 16, 2023
Instrument20231116000129
Lender
NameGIM COMMERCIAL MORTGAGE LOAN FUND LP
AddressNEW YORK, NY 10172
Agreement
TypeStand-Alone Refinance
AmountAmount on Record

November 2023: Assignment of Lease, Transfer

Document TypeAssignment of Lease
JurisdictionKING WA
Recording DateNov 16, 2023
Property Address1600 E JEFFERSON ST, SEATTLE, WA 98122-5698
Document Number0000000130
Map ReferenceVOL 8 PG 6
Instrument DateNov 15, 2023
Instrument20231116000130
Transaction TypeTransfer
Record UpdatedDec 7, 2023

Transaction

Tax$0.00
Amount AccuracyNo Consideration Stated
Additional
  • Arm's Length
  • Multiple Parcels

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
Address277 PARK AVE # 23RD, NEW YORK, NY 10172-0003

Tax Assessment & Valuation

Source: King County assessment roll, as of May 31, 2024

Property Jurisdictions

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

Tax Bill & Assessment History

YearTax BillAssessed ValueAssessed Market Value
2024Additional exemption filed$22,791,100 Land $5,805,500 Building $16,985,600$22,791,100 Land $5,805,500 Building $16,985,600
2022$56,602.00$6,333,500 Land $1,325,800 Building $5,007,700$6,333,500 Land $1,325,800 Building $5,007,700

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

Flood

FEMA maps place 1600 E Jefferson St in Zone X, an area of minimal flood risk, though there have been 2 flood claims nearby since 2014.

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
Nearby Flood Claims2 (2014–2015)
Claims Outside the SFHA2 of 2
Most Recent ClaimMar 2015 · other causes

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

The area around 1600 E Jefferson St has no burnable land within ember reach, so its wildfire risk is not rated.

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 591 locations within half a mile, as of December 31, 2025

ProviderMax Down / Up (Mbps)
Xfinity
Cable · Fiber in parts of the area		2,000 / 2,000
Astound Broadband
Cable · Fiber in parts of the area		1,500 / 50
Verizon
Fixed Wireless		1,000 / 75
AT&T
Fixed Wireless		100 / 20
T-Mobile
Fixed Wireless		100 / 20

May also be available: CenturyLink, Google Fiber.

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