King County Department of Assessments

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

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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	012605-9072
Name	MATTSON GRANT
Site Address	20331 166TH AVE NE 98072
Residential Area	036-002 (NE Appraisal District)
Property Name

Jurisdiction	WOODINVILLE
Levy Code	2505
Property Type	R
Plat Block / Building Number
Plat Lot / Unit Number
Quarter-Section-Township-Range	NW-1 -26-5

Legal Description

LOT 2 OF KC SHORT PLAT #488010 REC #8906150876 SD SP DAF - N 1/2 OF S 1/2 OF NW 1/4 OF GL 4 LESS CO RDS
PLat Block:
Plat Lot:

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	49,222
Acres	1.13

Percentage Unusable
Unbuildable	NO
Restrictive Size Shape	NO
Zoning	R-1
Water	WATER DISTRICT
Sewer/Septic	PRIVATE
Road Access	PUBLIC
Parking	ADEQUATE
Street Surface	PAVED

Views

Waterfront

Rainier
Territorial
Olympics
Cascades
Seattle Skyline
Puget Sound
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	1969
Year Renovated	0
Stories	1
Living Units	1
Grade	7 Average
Grade Variant	0
Condition	Average
Basement Grade
1st Floor	1,410
1/2 Floor	0
2nd Floor	0
Upper Floor	0
Finished Basement	0
Total Finished Area	1,410
Total Basement	0
Basement Garage	0
Unfinished 1/2	0
Unfinished Full	0
AGLA	1,410
Attached Garage	0
Bedrooms	1
Full Baths	1
3/4 Baths	0
1/2 Baths	0
Heat Source	Electricity
Heat System	Elec BB
Deck Area SqFt	430
Open Porch SqFt	0
Enclosed Porch SqFt	0
Brick/Stone	0
Fireplace Single Story	0
Fireplace Muilti Story	0
Fireplace Free Standing	1
Fireplace Additional	0
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

Click the camera to see more floor plans.

Floor plan of Building 1
Current Floor Plan

Accessory Of Building Number: 1

Accessory Type	Picture	Description	SqFt	Grade	Eff Year	%	Value	Date Valued
PRK:DET GAR			1420	5 Fair	1971			6/10/2013
MISC IMP		100-sf Shed					1000	3/31/2025

TAX ROLL HISTORY

Account	Valued Year	Tax Year	Levy Code	Appraised Land Value ($)	Appraised Imps Value ($)	Appraised Total Value ($)	New Dollars ($)	Taxable Land Value ($)	Taxable Imps Value ($)	Taxable Total Value ($)	Tax Value Reason
012605907208	2024	2025	2505	511,000	321,000	832,000	0	218,000	118,000	336,000	FS
012605907208	2023	2024	2505	437,000	274,000	711,000	0	218,000	118,000	336,000	FS
012605907208	2022	2023	2505	546,000	333,000	879,000	0	218,000	118,000	336,000	FS
012605907208	2021	2022	2505	380,000	231,000	611,000	0	218,000	118,000	336,000	FS
012605907208	2020	2021	2505	321,000	191,000	512,000	0	218,000	118,000	336,000	FS
012605907208	2019	2020	2505	329,000	196,000	525,000	0	218,000	118,000	336,000	FS
012605907208	2018	2019	2505	292,000	175,000	467,000	0	218,000	118,000	336,000	FS
012605907208	2017	2018	2505	266,000	159,000	425,000	0	218,000	118,000	336,000	FS
012605907208	2016	2017	2505	246,000	146,000	392,000	0	218,000	118,000	336,000	FS
012605907208	2015	2016	2505	241,000	141,000	382,000	0	218,000	118,000	336,000	FS
012605907208	2014	2015	2505	232,000	137,000	369,000	0	218,000	118,000	336,000	FS
012605907208	2013	2014	2505	208,000	83,000	291,000	0	208,000	83,000	291,000	FS
012605907208	2012	2013	2505	185,000	85,000	270,000	0	185,000	85,000	270,000	FS
012605907208	2011	2012	2505	191,000	89,000	280,000	0	191,000	89,000	280,000	FS
012605907208	2010	2011	2505	203,000	94,000	297,000	0	203,000	94,000	297,000	FS
012605907208	2009	2010	2505	203,000	113,000	316,000	0	203,000	113,000	316,000
012605907208	2008	2009	2505	239,000	130,000	369,000	0	218,000	118,000	336,000	FS
012605907208	2007	2008	2505	218,000	118,000	336,000	0	218,000	118,000	336,000
012605907208	2006	2007	2505	167,000	182,000	349,000	20,000	167,000	182,000	349,000
012605907208	2005	2006	2505	151,000	155,000	306,000	0	151,000	155,000	306,000
012605907208	2004	2005	2505	144,000	143,000	287,000	0	144,000	143,000	287,000
012605907208	2003	2004	2505	138,000	130,000	268,000	0	138,000	130,000	268,000
012605907208	2002	2003	2505	132,000	125,000	257,000	0	132,000	125,000	257,000
012605907208	2001	2002	2505	126,000	119,000	245,000	0	126,000	119,000	245,000
012605907208	2000	2001	2505	128,000	101,000	229,000	0	128,000	101,000	229,000
012605907208	1999	2000	2505	111,000	92,000	203,000	0	111,000	92,000	203,000
012605907208	1998	1999	2505	97,000	85,000	182,000	0	97,000	85,000	182,000
012605907208	1997	1998	2505	0	0	0	0	93,000	75,000	168,000
012605907208	1996	1997	2505	0	0	0	0	93,000	75,000	168,000
012605907208	1994	1995	2505	0	0	0	0	68,000	74,300	142,300
012605907208	1992	1993	7570	0	0	0	0	82,000	53,500	135,500
012605907208	1990	1991	7570	0	0	0	0	55,700	53,100	108,800
012605907208	1989	1990	7570	0	0	0	0	22,500	53,100	75,600
012605907208	1988	1989	7570	0	0	0	0	22,500	53,100	75,600
012605907208	1986	1987	7570	0	0	0	0	46,900	34,400	81,300
012605907208	1984	1985	7570	0	0	0	0	42,500	48,300	90,800
012605907208	1982	1983	7570	0	0	0	0	42,500	48,300	90,800

SALES HISTORY

Excise Number	Recording Number	Document Date	Sale Price	Seller Name	Buyer Name	Instrument	Sale Reason
1626858	199807221340	7/14/1998	$186,000.00	WHEELER WENDY L	MATTSON GRANT	Statutory Warranty Deed	None
1434084	199506220841	6/15/1995	$151,950.00	SMYTHE CRISPINA	WHEELER WENDY L	Statutory Warranty Deed	None

REVIEW HISTORY

PERMIT HISTORY

Permit Number	Permit Description	Type	Issue Date	Permit Value	Issuing Jurisdiction	Reviewed Date
BLD03014	350 sq. ft. addition to existing garage	Remodel	4/21/2003	$23,668	WOODINVILLE	8/23/2006

HOME IMPROVEMENT EXEMPTION

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Notice mailing date: 07/17/2025

King County Department of Assessments

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