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	888700-0563
Name	SULLIVAN DONALD A
Site Address	10620 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	35
Quarter-Section-Township-Range	SE-6 -23-3

Legal Description

VASHON HEIGHTS ASSESSORS PLAT POR BEG 7.07 FT NWLY OF MOST SLY COR TH N 20 DEG 08 MIN 20 SEC E 150.17 FT TH N 67 DEG 09 MIN 10 SEC W 55.84 FT TH S 67 DEG 50 MIN 50 SEC W 42.43 FT TO NWLY LN TH SWLY 120 FT TO MOST WLY COR TH SELY 92.93 FT TO BEG
PLat Block: 2
Plat Lot: 35

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	12,957
Acres	0.30

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

Views

Waterfront

Rainier
Territorial	GOOD
Olympics
Cascades	AVERAGE
Seattle Skyline	AVERAGE
Puget Sound	GOOD
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
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	1935
Year Renovated	1983
Stories	1
Living Units	1
Grade	8 Good
Grade Variant	0
Condition	Good
Basement Grade	8 Good
1st Floor	2,050
1/2 Floor	0
2nd Floor	0
Upper Floor	0
Finished Basement	1,190
Total Finished Area	3,240
Total Basement	1,390
Basement Garage	0
Unfinished 1/2	0
Unfinished Full	0
AGLA	2,050
Attached Garage	530
Bedrooms	4
Full Baths	2
3/4 Baths	1
1/2 Baths	0
Heat Source	Electricity
Heat System	Radiant
Deck Area SqFt	500
Open Porch SqFt	0
Enclosed Porch SqFt	0
Brick/Stone	16
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	YES
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		studio/cottage	180		2012		14000	3/5/2026

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 ($)	Taxable Total Value ($)
888700056300	2026	2027	4045	271,000	752,000	1,023,000	271,000	752,000	1,023,000
888700056300	2025	2026	4045	218,000	1,024,000	1,242,000	218,000	1,024,000	1,242,000
888700056300	2024	2025	4045	205,000	1,005,000	1,210,000	205,000	1,005,000	1,210,000
888700056300	2023	2024	4045	200,000	1,001,000	1,201,000	200,000	1,001,000	1,201,000
888700056300	2022	2023	4045	220,000	1,147,000	1,367,000	220,000	1,147,000	1,367,000
888700056300	2021	2022	4045	174,000	837,000	1,011,000	174,000	837,000	1,011,000
888700056300	2020	2021	4045	159,000	686,000	845,000	159,000	686,000	845,000
888700056300	2019	2020	4045	192,000	650,000	842,000	192,000	650,000	842,000
888700056300	2018	2019	4045	192,000	593,000	785,000	192,000	593,000	785,000
888700056300	2017	2018	4045	183,000	514,000	697,000	183,000	514,000	697,000
888700056300	2016	2017	4045	157,000	439,000	596,000	157,000	439,000	596,000
888700056300	2015	2016	4045	157,000	414,000	571,000	157,000	414,000	571,000
888700056300	2014	2015	4045	139,000	360,000	499,000	139,000	360,000	499,000
888700056300	2013	2014	4045	139,000	310,000	449,000	139,000	310,000	449,000
888700056300	2012	2013	4045	139,000	280,000	419,000	139,000	280,000	419,000
888700056300	2011	2012	4045	159,000	348,000	507,000	159,000	348,000	507,000
888700056300	2010	2011	4045	165,000	360,000	525,000	165,000	360,000	525,000
888700056300	2009	2010	4045	165,000	432,000	597,000	165,000	432,000	597,000
888700056300	2008	2009	4045	165,000	480,000	645,000	165,000	480,000	645,000
888700056300	2007	2008	4045	165,000	411,000	576,000	165,000	411,000	576,000
888700056300	2006	2007	4045	106,000	390,000	496,000	106,000	390,000	496,000
888700056300	2005	2006	4045	96,000	364,000	460,000	96,000	364,000	460,000
888700056300	2004	2005	4045	90,000	338,000	428,000	90,000	338,000	428,000
888700056300	2003	2004	4045	86,000	301,000	387,000	86,000	301,000	387,000
888700056300	2002	2003	4045	77,000	287,000	364,000	77,000	287,000	364,000
888700056300	2001	2002	4045	119,000	285,000	404,000	119,000	285,000	404,000
888700056300	2000	2001	4045	104,000	254,000	358,000	104,000	254,000	358,000
888700056300	1999	2000	4045	99,000	240,000	339,000	99,000	240,000	339,000
888700056300	1998	1999	4045	87,000	238,000	325,000	87,000	238,000	325,000
888700056300	1997	1998	4045	0	0	0	76,000	205,700	281,700
888700056300	1996	1997	4045	0	0	0	105,000	213,600	318,600
888700056300	1995	1996	4045	0	0	0	105,000	213,600	318,600

SALES HISTORY

Excise Number	Recording Number	Document Date	Sale Price	Seller Name	Buyer Name	Instrument	Sale Reason
3225245	20230203000285	1/27/2023	$666,566.00	SULLIVAN DONALD A	SULLIVAN FAMILY TRUST "A"+ANY AMNDMNTS (48.7%)--MARY E (SOLE SURVIVING TTE)	Statutory Warranty Deed	Trust
2797062	20160519001414	5/17/2016	$949,000.00	VOLIN THEODORE P+VIRGINIA H -TTEES	SULLIVAN DONALD A+HOFFMAN LAURA E	Statutory Warranty Deed	None
2094402	20050104002182	1/3/2005	$525,000.00	OWEN K PAUL+GENEVA L+OWEN FAMILY TRUST	VOLIN THEODORE P+VIRGINIA H+VOLIN LIVING TRUST	Statutory Warranty Deed	Trust
1318431	199307091514	6/29/1993	$0.00	OWEN K PAUL+GENEVA L	OWEN K PAUL+OWEN GENEVA L	Quit Claim Deed	Other

REVIEW HISTORY

PERMIT HISTORY

HOME IMPROVEMENT EXEMPTION

Exempt Number	Building Number	Received Date	Estimated Cost	Estimated Completion Date	Begin Year	End Year	Amount	Permit Jurisdiction
7295	1	9/27/1994	$6,000	10/1/1994	1996	1998	$1,300	KING COUNTY

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