King County Department of Assessments

Setting values, serving the community, and promoting fairness and equity.

You're in: Assessor >> eReal Property

Department of Assessments

201 South Jackson Street,
Seattle, WA 98104

Office Hours:
Mon - Fri
8:30 a.m. to 4:30 p.m.

TEL: 206-296-7300
TTY relay: 711 or 800-833-4388

PARCEL DATA

Parcel	888700-0562
Name	SIEGRIST ERIN L+FREDRICK S
Site Address	10634 SW COWAN RD 98070
Residential Area	100-001 (SW Appraisal District)
Property Name

Jurisdiction	KING COUNTY
Levy Code	4045
Property Type	R
Plat Block / Building Number	2
Plat Lot / Unit Number	34
Quarter-Section-Township-Range	SE-6 -23-3

Legal Description

VASHON HEIGHTS ASSESSORS PLAT POR OF LOT 34 LY WLY OF A LN DAF - BAAP ON SWLY LN OF LOT 34 DISTANCE OF N 67-09-10 W 45.72 FT FR MOST SLY COR OF LOT 34 TH N 06-31-42 E 191.35 FT TH N 20-31-08 E 59.76 FT TO NLY LN OF LOT 34 & TERM OF SD LINE LESS S 10 FT FOR SW 108TH PLACE - AKA PARCEL A OF KC LOT LN ADJ NO 8906006 APPROVED SEPTEMBER 6, 1989
PLat Block: 2
Plat Lot: 34

LAND DATA

Highest & Best Use As If Vacant	SINGLE FAMILY
Highest & Best Use As Improved	PRESENT USE
Present Use	Single Family(Res Use/Zone)
Land SqFt	14,976
Acres	0.34

Percentage Unusable
Unbuildable	NO
Restrictive Size Shape	NO
Zoning	RA-5
Water	WATER DISTRICT
Sewer/Septic	PRIVATE
Road Access	PUBLIC
Parking	ADEQUATE
Street Surface	PAVED

Views

Waterfront

Rainier
Territorial	EXCELLENT
Olympics
Cascades	AVERAGE
Seattle Skyline	AVERAGE
Puget Sound	EXCELLENT
Lake Washington
Lake Sammamish
Lake/River/Creek
Other View

Waterfront Location
Waterfront Footage	0
Lot Depth Factor	0
Waterfront Bank
Tide/Shore
Waterfront Restricted Access
Waterfront Access Rights	NO
Poor Quality	NO
Proximity Influence	NO

Designations

Nuisances

Historic Site
Current Use	(none)
Nbr Bldg Sites
Adjacent to Golf Fairway	NO
Adjacent to Greenbelt	NO
Other Designation	NO
Deed Restrictions	NO
Development Rights Purchased	NO
Easements	NO
Native Growth Protection Easement	NO
DNR Lease	NO

Topography	YES
Traffic Noise
Airport Noise
Power Lines	NO
Other Nuisances	NO

Problems

Water Problems	NO
Transportation Concurrency	NO
Other Problems	NO

Environmental

BUILDING

Building Number	1
Year Built	1946
Year Renovated	1977
Stories	2
Living Units	1
Grade	9 Better
Grade Variant	0
Condition	Average
Basement Grade
1st Floor	2,160
1/2 Floor	0
2nd Floor	740
Upper Floor	0
Finished Basement	0
Total Finished Area	2,900
Total Basement	560
Basement Garage	0
Unfinished 1/2	0
Unfinished Full	0
AGLA	2,900
Attached Garage	0
Bedrooms	3
Full Baths	1
3/4 Baths	1
1/2 Baths	0
Heat Source	Electricity
Heat System	Ht Pump/AC
Deck Area SqFt	710
Open Porch SqFt	0
Enclosed Porch SqFt	130
Brick/Stone	0
Fireplace Single Story	0
Fireplace Muilti Story	1
Fireplace Free Standing	0
Fireplace Additional	1
AddnlCost	0
Obsolescence	0
Net Condition	0
Percentage Complete	0
Daylight Basement
View Utilization

Click the camera to see more pictures.

Picture of Building 1
Current Picture

Floor plan of Building 1
Current Floor Plan

Accessory Of Building Number: 1

Accessory Type	Picture	Description	SqFt	Grade	Eff Year	%	Value	Date Valued
MISC IMP		20x12 unfin. studio	240	5 Fair	1970		11000	4/9/2026

TAX ROLL HISTORY

Account	Valued Year	Tax Year	Levy Code	Appraised Land Value ($)	Appraised Imps Value ($)	Appraised Total Value ($)	Taxable Land Value ($)	Taxable Imps Value ($)	Taxable Total Value ($)
888700056201	2026	2027	4045	289,000	692,000	981,000	289,000	692,000	981,000
888700056201	2025	2026	4045	233,000	1,089,000	1,322,000	233,000	1,089,000	1,322,000
888700056201	2024	2025	4045	219,000	1,146,000	1,365,000	219,000	1,146,000	1,365,000
888700056201	2023	2024	4045	214,000	1,141,000	1,355,000	214,000	1,141,000	1,355,000
888700056201	2022	2023	4045	236,000	1,307,000	1,543,000	236,000	1,307,000	1,543,000
888700056201	2021	2022	4045	186,000	955,000	1,141,000	186,000	955,000	1,141,000
888700056201	2020	2021	4045	170,000	784,000	954,000	170,000	784,000	954,000
888700056201	2019	2020	4045	208,000	755,000	963,000	208,000	755,000	963,000
888700056201	2018	2019	4045	208,000	689,000	897,000	208,000	689,000	897,000
888700056201	2017	2018	4045	199,000	597,000	796,000	199,000	597,000	796,000
888700056201	2016	2017	4045	171,000	510,000	681,000	171,000	510,000	681,000
888700056201	2015	2016	4045	171,000	481,000	652,000	171,000	481,000	652,000
888700056201	2014	2015	4045	174,000	446,000	620,000	174,000	446,000	620,000
888700056201	2013	2014	4045	174,000	384,000	558,000	174,000	384,000	558,000
888700056201	2012	2013	4045	174,000	346,000	520,000	174,000	346,000	520,000
888700056201	2011	2012	4045	199,000	383,000	582,000	199,000	383,000	582,000
888700056201	2010	2011	4045	207,000	395,000	602,000	207,000	395,000	602,000
888700056201	2009	2010	4045	207,000	477,000	684,000	207,000	477,000	684,000
888700056201	2008	2009	4045	207,000	532,000	739,000	207,000	532,000	739,000
888700056201	2007	2008	4045	207,000	453,000	660,000	207,000	453,000	660,000
888700056201	2006	2007	4045	129,000	468,000	597,000	129,000	468,000	597,000
888700056201	2005	2006	4045	117,000	436,000	553,000	117,000	436,000	553,000
888700056201	2004	2005	4045	109,000	406,000	515,000	109,000	406,000	515,000
888700056201	2003	2004	4045	104,000	335,000	439,000	104,000	335,000	439,000
888700056201	2002	2003	4045	93,000	319,000	412,000	93,000	319,000	412,000
888700056201	2001	2002	4045	69,000	369,000	438,000	69,000	369,000	438,000
888700056201	2000	2001	4045	60,000	328,000	388,000	60,000	328,000	388,000
888700056201	1999	2000	4045	57,000	291,000	348,000	57,000	291,000	348,000
888700056201	1998	1999	4045	50,000	300,000	350,000	50,000	300,000	350,000
888700056201	1997	1998	4045	0	0	0	44,000	261,000	305,000
888700056201	1996	1997	4045	0	0	0	133,500	200,000	333,500
888700056201	1995	1996	4045	0	0	0	133,500	200,000	333,500

SALES HISTORY

Excise Number	Recording Number	Document Date	Sale Price	Seller Name	Buyer Name	Instrument	Sale Reason
3348785	20250926000017	9/25/2025	$1,010,000.00	BRAMBLET JOHN W+YULI HAN	SIEGRIST ERIN L+FREDRICK S	Statutory Warranty Deed	Other
1418295	199503010384	2/22/1995	$390,000.00	AMER KENNETH S+SUE S	BRAMBLET JOHN W+YULI HAN	Warranty Deed	None

REVIEW HISTORY

Tax Year	Review Number	Review Type	Appealed Value	Hearing Date	Settlement Value	Decision	Status
2009	0804811	Local Appeal	$739,000	5/19/2009	$739,000	SUSTAIN	Completed
1993	9203466	Local Appeal	$378,300	11/12/1992	$333,500	REVISE	Completed
1991	9001876	Local Appeal	$291,400	1/31/1991	$272,600	REVISE	Completed

PERMIT HISTORY

HOME IMPROVEMENT EXEMPTION

Reference Links:

Housing Availability Dashboard

Notice mailing date: 07/30/2026

King County Department of Assessments

Reference Links:

Information for...

Do more online

Get help

Information for...

Do more online

Get help