23 Prospect St, Seattle, WA 98109 Property Records

King County property record for 23 Prospect St, Seattle, WA 98109

Property Summary

Property Type	Duplex
Details	5 bd · 5.75 ba · 3,410 sqft · built 1918
Lot Size	0.082 acres (3,575 sqft)
Owner	2 Individual Names on File
Last Sale	$1,250,000 (Mar 2016)
Tax Bill	$19,022 (2026)
Deeds & Mortgages	Mar 2024 Line of Credit Aug 2023 Transfer + 4 more
Flood Zone	Zone X (minimal risk)
APN	`545730-0075`

Property Details

APN / Parcel Number

Primary APN	`545730-0075`
Alternative APN	`545730007501`

Interior

Bedrooms	5 Beds
Full Baths	5.75 Baths
Half Baths	1 Half Bath
Stories	1 Story
Building Area	3,410 sqft Living Area
Gross Area	3,720 sqft
1st Floor Area	990 sqft
Upper Floors Area	1,130 sqft
Basement Area	1,290 sqft
Finished Basement	1,290 sqft
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1918
Effective Year Built	Effective 1918
Architectural Style	Duplex Single
Lot Area	3,575 sqft (0.082 acres)
View / Lot	Water View
Garage Type	Attached
Garage Area	310 sqft
Parking Spaces	1 Parking Space
Porch	Open Porch
Porch Area	110 sqft
Deck Area	350 sqft

Utilities, Heating & Cooling

Heating System	Hot Water
Heating Fuel	Gas
Sewer	Municipal
Water Source	Commercial

Location & Zoning

Account Number	545730007501
Street Address	23 PROSPECT ST
City	SEATTLE
State	WA
Zip	98109-3686
Property Category	Residential
Property Type	Residential > Multi-Unit > Duplex
Local Zoning Code	LR3 (M)
Legal Description	MERCERS ADD TO N SEATTLE N 1/2 OF POR S OF PROSPECT ST
Legal Range	03
Legal Township	25
Legal Section	25
Legal Subdivision	MERCERS ADD TO N SEATTLE
Legal Block	5
Legal Lot Number	5
Jurisdiction	KING WA
Township / Civil Division	SEATTLE
Census Block Group	2
Census Block	2008
Census Tract	7002

Owner

23 Prospect St, a duplex, is owned and occupied by two individuals who acquired it in June 2023.

Source: King County records, as of September 9, 2026

Owner of Record	2 Individual Names on File
Mailing Address	23 PROSPECT ST, SEATTLE, WA 98109-3686
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Community Property

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

Date	Document
Mar 13, 2024	Deed of Trust, Mortgage · Line of Credit BANK OF AMERICA NA
Aug 4, 2023	Intrafamily Transfer, Transfer
Feb 11, 2022	Deed of Trust, Mortgage · Conventional Mortgage ROCKET MORTGAGE LLC
Jun 29, 2021	Quit Claim Deed, Transfer Quitclaim
Dec 16, 2020	Quit Claim Deed, Transfer · Conventional Mortgage ACADEMY MORTGAGE CORP
Dec 8, 2020	Quit Claim Deed, Transfer ATTORNEY ONLY

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Mar 18, 2016 · Amount on File
Deed Sale	Mar 18, 2016 · Amount on File
Prior Sale	Jun 28, 2013 · Amount on File
Deed Document Number	2016563
Last Transfer Date	Jun 29, 2023
Transfer Doc	0000000395
Record Updated	Oct 29, 2026

March 2024: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	KING WA
Property Address	23 PROSPECT ST, SEATTLE, WA 98109-3686
Transaction Type	Mortgage
Record Updated	Mar 26, 2024

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000000077
Date	Mar 13, 2024
Instrument	20240313000077

Lender

Name	BANK OF AMERICA NA
Type	Bank
Address	CHARLOTTE, NC 28255

Agreement

Type	Line of Credit
Amount	Amount on Record
Term	360 Months
Due	Mar 1, 2054

Interest

Rate Type	Adjustable Rate
Change Frequency	Monthly

August 2023: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	KING WA
Recording Date	Aug 4, 2023
Property Address	23 PROSPECT ST, SEATTLE, WA 98109-3686
Document Number	0000000395
Instrument Date	Jun 29, 2023
Instrument	20230804000395
Transaction Type	Transfer
Record Updated	Aug 15, 2023

Transaction

Tax	$0.00
Amount Accuracy	Transfer Tax Exempt
Additional	Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name
Address	23 PROSPECT ST, SEATTLE, WA 98109-3686

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Community Property with Right of Survivorship
Address	23 PROSPECT ST, SEATTLE, WA 98109-3686

February 2022: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	KING WA
Property Address	23 PROSPECT ST, SEATTLE, WA 98109-3686
Transaction Type	Mortgage
Record Updated	Feb 24, 2022
Title Company	AMROCK INC

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000000979
Date	Feb 11, 2022
Instrument	20220211000979

Lender

Name	ROCKET MORTGAGE LLC
Type	Mortgage Company
Address	DETROIT, MI 48226

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	361 Months
Due	Mar 1, 2052

June 2021: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	KING WA
Recording Date	Jun 29, 2021
Property Address	23 PROSPECT ST, SEATTLE, WA 98109-3686
Document Number	0000001910
Map Reference	VOL 1 PG 171
Instrument Date	Jun 28, 2021
Instrument	20210629001910
Transaction Type	Transfer
Record Updated	Jul 9, 2021

Transaction

Tax	$0.00
Amount Accuracy	Transfer Tax Exempt
Additional	Quitclaim Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name

December 2020: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	KING WA
Recording Date	Dec 16, 2020
Property Address	23 PROSPECT ST, SEATTLE, WA 98109-3686
Document Number	0000001570
Map Reference	VOL 1 PG 171
Instrument Date	Dec 11, 2020
Instrument	20201216001570
Transaction Type	Transfer
Record Updated	Jul 30, 2021
Title Company	WFG NATL TTL CO OF WA LLC

Transaction

Tax	$0.00
Amount Accuracy	Transfer Tax Exempt
Additional	Quitclaim Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	23 PROSPECT ST, SEATTLE, WA 98109-3686

Mortgage

Document Number	0000001571
Date	Dec 16, 2020
Instrument	20201216001571

Lender

Name	ACADEMY MORTGAGE CORP
Type	Mortgage Company

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	361 Months
Due	Jan 1, 2051

December 2020: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	KING WA
Recording Date	Dec 8, 2020
Property Address	23 PROSPECT ST, SEATTLE, WA 98109-3686
Document Number	0000001004
Instrument Date	Nov 20, 2020
Instrument	202012081004
Transaction Type	Transfer
Record Updated	Dec 17, 2020
Title Company	ATTORNEY ONLY

Transaction

Tax	$0.00
Additional	Quitclaim Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Separate Estate/Property
Address	23 PROSPECT ST SEATTLE WA 981093686, SEATTLE, WA 98109-3686

Tax Assessment & Valuation

The 2026 property tax bill for 23 Prospect St was $19,022.

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

Property Jurisdictions

Type	Name
State	Washington
County	King County
Municipality	Seattle City
Unified School District	Seattle Public Schools (PK - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value	Assessed Market Value
2026	$19,022.00
2025		$1,857,000 (+1.81%) Land $1,373,000 Building $484,000	$1,857,000 (+1.81%) Land $1,373,000 Building $484,000
2024	$17,362.00 (+11.96%)	$1,824,000 Land $1,373,000 Building $451,000	$1,824,000 Land $1,373,000 Building $451,000
2023	$15,507.00
2022	$15,507.00	$1,847,000 Land $1,453,000 Building $394,000	$1,847,000 Land $1,453,000 Building $394,000

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

Flood

FEMA maps place 23 Prospect St in Zone X, an area of minimal flood risk.

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

FEMA Flood Zone	Zone X minimal risk
Flood Insurance Requirement	Not required lenders may require it
Nearby Flood Policies	1 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

The area around 23 Prospect 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 Risk	Not 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 System	SEATTLE PUBLIC UTILITIES serves 1,161,961 people · EPA ID WA5377050
Water Source	Surface water
Last State Inspection	Jul 2025
Lead	2 ppb (2025) action level 15 ppb

Violations Reported to EPA

Water Quality	None last 10 years
Treatment and Procedure	None last 10 years
Monitoring and Reporting	None 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 631 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
CenturyLink Fiber	8,000 / 8,000
Xfinity Cable	2,000 / 2,000
Verizon Fixed Wireless	1,000 / 75
AT&T Fixed Wireless	100 / 20

May also be available: Astound Broadband, Google Fiber, T-Mobile.

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