18136 Thorsen Rd SW is a 1,750 square foot house on a 9.76 acre lot with 3 bedrooms and 2 bathrooms. Based on Redfin's Vashon data, we estimate the home's value is $1,190,431.
Single-familyProperty Type
1980Year Built
9.76 acresLot Size
$680Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$1,190,431
$13K since August
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 40.4% higher than the average sale price ($848K) of 6 comparable homes.
As the MLS and public records start to fill up, we'll list the details here.
Year
Property tax
Land + Additions
Assessment*
2026
$11,377
$399,000 + $625,000
$1,024,000
2025
$11,378 (−1.4%)
$399,000 + $625,000
$1,024,000
2024
$11,534 (+1.9%)
$375,000 + $683,000
$1,058,000
2023
$11,321 (+10.2%)
$365,000 + $685,000
$1,050,000
2022
$10,275 (+8.4%)
$402,000 + $794,000
$1,196,000
2021
$9,475 (−0.9%)
$317,000 + $567,000
$884,000
2020
$9,562 (+4.9%)
$289,000 + $450,000
$739,000
2019
$9,117 (+2.4%)
$303,000 + $486,000
$789,000
2018
$8,904 (+23.3%)
$303,000 + $486,000
$789,000
2017
$7,220 (+1.1%)
$289,000 + $411,000
$700,000
2016
$7,139 (+136.7%)
$248,000 + $351,000
$599,000
2015
$3,016 (+5.8%)
$248,000 + $326,000
$574,000
2014
$2,851 (+5.4%)
$169,000 + $59,000
$228,000
2013
$2,704 (−2.7%)
$169,000 + $22,000
$191,000
2012
$2,779 (+1.8%)
$169,000 + $22,000
$191,000
2011
$2,729 (−1.8%)
$200,000 + $22,000
$222,000
2010
$2,780 (+13.1%)
$200,000 + $53,000
$253,000
2009
$2,458
$200,000 + $74,000
$274,000
Tax history for 18136 Thorsen Rd SW
Year
Property tax
Land + Additions
Assessment*
2026
$11,377
$399,000 + $625,000
$1,024,000
2025
$11,378 (−1.4%)
$399,000 + $625,000
$1,024,000
2024
$11,534 (+1.9%)
$375,000 + $683,000
$1,058,000
2023
$11,321 (+10.2%)
$365,000 + $685,000
$1,050,000
2022
$10,275 (+8.4%)
$402,000 + $794,000
$1,196,000
2021
$9,475 (−0.9%)
$317,000 + $567,000
$884,000
2020
$9,562 (+4.9%)
$289,000 + $450,000
$739,000
2019
$9,117 (+2.4%)
$303,000 + $486,000
$789,000
2018
$8,904 (+23.3%)
$303,000 + $486,000
$789,000
2017
$7,220 (+1.1%)
$289,000 + $411,000
$700,000
2016
$7,139 (+136.7%)
$248,000 + $351,000
$599,000
2015
$3,016 (+5.8%)
$248,000 + $326,000
$574,000
2014
$2,851 (+5.4%)
$169,000 + $59,000
$228,000
2013
$2,704 (−2.7%)
$169,000 + $22,000
$191,000
2012
$2,779 (+1.8%)
$169,000 + $22,000
$191,000
2011
$2,729 (−1.8%)
$200,000 + $22,000
$222,000
2010
$2,780 (+13.1%)
$200,000 + $53,000
$253,000
2009
$2,458
$200,000 + $74,000
$274,000
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Zoning
RA-5
Rural Area Zone
The purpose of the rural zone (RA) is to provide for an area-wide long-term rural character and to minimize land use conflicts with nearby agricultural or forest production districts or mineral extraction sites. These purposes are accomplished by: Limiting residential densities and permitted uses to those that are compatible with rural character and nearby resource production districts and sites and are able to be adequately supported by rural service levels; Allowing small scale farming and forestry activities and tourism and recreation uses that can be supported by rural service levels and that are compatible with rural character; Increasing required setbacks to minimize conflicts with adjacent agriculture, forest or mineral zones; and Requiring tracts created through cluster development to be designated as permanent open space or as permanent resource use.; Use of this zone is appropriate in rural areas designated by the Comprehensive Plan as follows: RA-5 in rural areas where the predominant lot pattern is five acres or greater but less than ten acres in size and the area is generally environmentally unconstrained
Permitted uses
Include but are not limited to:
Livestock production
Winery & vineyard
Housing-Other
Infrastructure
Police station
Agriculture-Cropland
Property details
Interior
Bathroom Information
# of Full Baths: 1
# of 3/4 Baths: 1
Heating & Cooling
Heating Fuel Type: Electric
Heating Type: Forced Air
Fireplace Information
# of Fireplaces: 1
Has Fireplace
Exterior
Exterior Information
Physical Condition: Average
Building Construction Quality: Good
Building Type: Single Family
Property Information
Subdivision Name: SP #778086
Living Sq. Ft: 1,750
Ground Floor Sq. Ft: 1,080
Building Sq. Ft: 2,370
# of Stories: 2
Legal Description: PARCEL 3 KC SHORT PLAT 778086 REC NO 7811281278 SD PLAT DAF SW 1/4 OF NW 1/4 LESS S 1/2 OF S 1/2 THOF LESS CO RD LESS POR LY NWLY OF CO RD #380 PLAT BLOCK: PLAT LOT:
Parking & Garage Information
Parking Type: Attached Garage
Garage/Parking Sq. Ft: 620
Garage / Carport Type: Attached
Lot Information
# of Buildings: 1
Land Sq. Ft: 425,086
Legal Lot Number: 3
Municipality Name: KING COUNTY
Acres: 9.7586
Zoning Code: RA5
County Use Description: SINGLE FAMILY(RES USE/ZONE)
Utility Information
Sewer Type: Private
Water Service Type: Private
Financial
Assessor Information
Assessment Year: 2025
Public facts
Beds: 3
Baths: 2.0
Sq. Ft.: 1,750
Stories: 2.0
Lot Size: 9.76 acres
Style: Single Family Residential
Year Built: 1980
Year Renovated: —
County: King County
APN: 362302 9050
Home facts updated by county records on Jul 6, 2026
Around this home
Schools
Chautauqua Elementary School
Public PreK-5 • Assigned • 2.4mi
8/10
Mcmurray Middle School
Public 6-8 • Assigned • 2.3mi
8/10
Vashon Island High School
Public 9-12 • Assigned • 2.4mi
9/10
Provided by GreatSchools
Lifestyle
Provided by Walk Score and Local Logic
Climate risks
1/10 Flood Factor
Minimal risk of a flood reaching the building in the next 30 years
1/10 Fire Factor
Unlikely to be in a wildfire in next 30 years
2/10 Heat Factor
7 days above 86° expected this year, 13 days in 30 years
1/10 Wind Factor
Minimal risk of severe winds over next 30 years
6/10 Air Factor
8 unhealthy days expected this year, 9 days in 30 years
Provided by First Street
Historical weather
Vashon, WA • 98070
Average low and high temperatures (°F)
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37
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41
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44
65
48
71
52
77
55
76
58
70
54
59
47
51
43
48
41
Jan
Feb
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Apr
May
Jun
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Aug
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Sun exposure
In this area, properties receive around 8.7 hours in
June and 1.7 hours in December, placing it below the
U.S. average for solar exposure.
8.7 hrs
1.7 hrs
JuneDecember
Provided by Shadowmap
Estimated sale price
$1.13M – $1.37M
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