831 31st Ave S, Seattle, WA 98144 Property Records

King County property record for 831 31st Ave S, Seattle, WA 98144

Property Summary

Property Type	Single Family Home
Details	3 bd · 2 ba · 1,450 sqft · built 1918
Lot Size	0.073 acres (3,182 sqft)
Owner	Individual Name on File
Last Sale	$725,000 (Oct 2017)
Tax Bill	$7,763 (2026)
Deeds & Mortgages	Apr 2021 Mortgage Oct 2017 Sale & Mortgage + 2 more
Flood Zone	Zone X (minimal risk)
APN	`042404-9036`

Property Details

APN / Parcel Number

Primary APN	`042404-9036`
Alternative APN	`042404903603`

Interior

Bedrooms	3 Beds
Full Baths	2 Baths
Stories	1 Story
Building Area	1,450 sqft Living Area
Gross Area	1,690 sqft
1st Floor Area	820 sqft
Basement Area	650 sqft
Finished Basement	630 sqft
Unfinished Basement	20 sqft
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1918
Effective Year Built	Effective 1918
Lot Area	3,182 sqft (0.073 acres)
View / Lot	Water View
Garage Type	Attached
Garage Area	220 sqft
Parking Spaces	1 Parking Space
Porch	Open Porch
Porch Area	230 sqft

Utilities, Heating & Cooling

Heating System	Forced Air with A/C
Heating Fuel	Electric
Sewer	Municipal
Water Source	Commercial

Location & Zoning

Account Number	042404903603
Street Address	831 31ST AVE S
City	SEATTLE
State	WA
Zip	98144-3210
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	NR3
Legal Description	BEG AT SW COR LOT 6 BLK 1 BIRD & ESRYS LK WASH ADD TH E 73.77 FT TH S 42.65 FT TH W 73.80 FT TO E LN 30TH AVE SOUTH TH N 42.65 FT TO BEG-POR TR 37 SEATTLE HOMESTEAD 5 ACRE TRS
Legal Range	04
Legal Township	24
Legal Section	04
Legal Subdivision	BIRD & ESRYS LK WASH ADD
Legal Tract	37
Legal Block	1
Legal Lot Number	6
Jurisdiction	KING WA
Township / Civil Division	SEATTLE
Census Block Group	2
Census Block	2001
Census Tract	8900

Owner

831 31st Ave S is owned by an individual who bought it in October 2017.

Source: King County records, as of July 7, 2026

Owner of Record	Individual Name on File
Mailing Address	831 30TH AVE S, SEATTLE, WA 98144-3205
Owner Type	Individual

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
Apr 19, 2021	Deed of Trust, Mortgage · Conventional Mortgage FLAGSTAR BANK FSB
Oct 10, 2017	Warranty Deed, Transfer · Conventional Mortgage SAMMAMISH MORTGAGE CO
Oct 10, 2017	Quit Claim Deed, Transfer FIRST AMERICAN TITLE
Jul 13, 2017	Warranty Deed, Transfer

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Oct 10, 2017 · Amount on File
Deed Sale	Oct 10, 2017 · Amount on File
Prior Sale	May 12, 2009 · Amount on File
Deed Document Number	20171893
Prior Transfer Date	Sep 29, 2017
Prior Transfer Doc	0000001894
Record Updated	Oct 29, 2026

April 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	KING WA
Property Address	831 31ST AVE S, SEATTLE, WA 98144-3210
Transaction Type	Mortgage
Record Updated	Apr 30, 2021
Title Company	FIRST AMERICAN TITLE

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000002005
Date	Apr 19, 2021
Instrument	20210419002005

Lender

Name	FLAGSTAR BANK FSB
Type	Bank
Address	TROY, MI 48098

Agreement

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

October 2017: Warranty Deed, Transfer

Document Type	Warranty Deed
Jurisdiction	KING WA
Recording Date	Oct 10, 2017
Property Address	831 31ST AVE S, SEATTLE, WA 98144-3210
Document Number	0000001893
Instrument Date	Sep 29, 2017
Instrument	20171010001893
Transaction Type	Transfer
Record Updated	Jul 30, 2021
Title Company	FIRST AMERICAN

Transaction

Amount	Amount on Record
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$0.00
Amount Accuracy	Full Amount Stated
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	831 31ST AVE S, SEATTLE, WA 98144-3210

Mortgage

Document Number	0000001895
Date	Oct 10, 2017
Instrument	20171010001895

Lender

Name	SAMMAMISH MORTGAGE CO
Type	Mortgage Company

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	361 Months
Due	Nov 1, 2047

October 2017: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	KING WA
Recording Date	Oct 10, 2017
Property Address	831 31ST AVE S, SEATTLE, WA 98144-3210
Document Number	0000001894
Instrument Date	Sep 29, 2017
Instrument	201710101894
Transaction Type	Transfer
Record Updated	Oct 16, 2017
Title Company	FIRST AMERICAN TITLE

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	831 31ST AVE S SEATTLE WA 981443210, SEATTLE, WA 98144-3210

July 2017: Warranty Deed, Transfer

Document Type	Warranty Deed
Jurisdiction	KING WA
Recording Date	Jul 13, 2017
Property Address	831 31ST AVE S, SEATTLE, WA 98144-3210
Document Number	0000000273
Instrument Date	Jul 11, 2017
Instrument	201707130273
Transaction Type	Transfer
Record Updated	Jul 18, 2017

Transaction

Tax	$0.00
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Company

Tax Assessment & Valuation

The 2026 property tax bill for 831 31st Ave S was $7,763.

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	$7,763.00
2025		$734,000 (+8.74%) Land $372,000 Building $362,000	$734,000 (+8.74%) Land $372,000 Building $362,000
2024	$6,672.00	$675,000 Land $365,000 Building $310,000	$675,000 Land $365,000 Building $310,000
2022	$6,138.00	$693,000 Land $315,000 Building $378,000	$693,000 Land $315,000 Building $378,000

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

Flood

FEMA maps place 831 31st Ave S 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	2 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 831 31st Ave S 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 358 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
CenturyLink Fiber · DSL in parts of the area	8,000 / 8,000
Xfinity Cable	2,000 / 2,000
T-Mobile Fixed Wireless	100 / 20

May also be available: Astound Broadband, Verizon.

Cell Coverage

5G (outdoors only) and 4G LTE

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