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Single Family ResidenceResidential
$773,548$409 / ft²
TopHap EstimateOur estimate of what this home would sell for today, based on nearby sales, the home's size and features, and local price trends. It is a starting point, not an appraisal.· confidence 82How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Aug 30, 2026

20109 78TH PL SW

VASHON, WA 98070
5
Beds
2
Baths
1,890 ft²
Living AreaTotal finished area of the structures, from county records. Some counties include shared space like hallways or a building gym, so it may not match a listing.
1.72 ac
Lot SizeThe size of the land the home sits on, from county records.
1983
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.

Valuation

$774K
$634K low$914K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$8,844 (2026)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$788,000 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$197,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$591,000
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$768,000
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$788,000

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyKING
HeatingThe type of heating system in the home.Electric
FireplaceWhether the home has a fireplace, and what kind.Yes
PoolWhether the property has a pool, and what kind, such as in-ground.No

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

E
Chautauqua Elementary SchoolA-
Elementary · Grades PK–5 · 1.0 mi
M
McMurray Middle SchoolA
Middle · Grades 6–8 · 1.1 mi
H
Vashon Island High SchoolA
High · Grades 9–12 · 1.2 mi

District: Vashon Island School District

Neighborhood · ZIP 98070These are comparison scores, not percentages. 100 equals the national average, so 150 means about 50% above average.

CrimeLocal crime compared with the rest of the country, where 100 is average. It reflects things like population density, income, and how crime gets reported.152
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.108
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.263

Index scale: 100 = US average (tick). Lower is better.

Homes occupiedThe share of homes here that someone lives in. The rest sit empty, including vacation and for-sale homes.83%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.31%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.10%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.2%
PopulationHow many people live in this area.11,184
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.225 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$106,056
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$140,428
Average tempThe average temperature here across a full year.51°F
Annual precipHow much rain and melted snow falls here in a typical year.47 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.43%

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Data by ATTOM. Valuations are automated estimates, not appraisals. Photos from Google Street View and may not depict the current property state.

How this home compares

20109 78th Pl Sw measured against every home in its neighborhood, its ZIP code and its county, using county assessor records refreshed nightly. A home can stand out in one of those areas and look ordinary in another, because each one holds a different mix of homes.

  • Worth less than 71% of homes in Vashon 98070
  • Costs less per square foot than 82% of homes in Vashon 98070
  • Has a bigger lot than 88% of homes in King County
  • Newer than 69% of homes in Vashon North

What homes are worth in Vashon 98070

Each bar is how many homes fall in that price range. The marker is this home.

This home
$378K$2.2M

This home is worth more than 29% of homes in Vashon 98070.

How it measures up in Vashon 98070

The dot is this home. The mark in the middle is the typical home in Vashon 98070.

Estimated value$773,548
CheaperTypical $934,136Pricier

Pricier than 29% of homes nearby

Price per ft²$409
CheaperTypical $546Pricier

Pricier than 18% of homes nearby

Living area1,890 ft²
SmallerTypical 1,790 ft²Bigger

Bigger than 55% of homes nearby

Lot size1.72 ac
SmallerTypical 1.01 acBigger

Bigger than 60% of homes nearby

Year built1983
OlderTypical 1972Newer

Newer than 65% of homes nearby

How 20109 78th Pl Sw ranks against every home in each area.
MeasureThis homeVashon NorthVashon 98070King County
Estimated valuepricier than$773,54836% of homes29% of homes46% of homes
Price per ft²pricier than$40920% of homes18% of homes32% of homes
Living areabigger than1,890 ft²58% of homes55% of homes52% of homes
Lot sizebigger than1.72 ac64% of homes60% of homes88% of homes
Year builtnewer than198369% of homes65% of homes56% of homes

About 20109 78th Pl Sw

How much is 20109 78th Pl Sw, Vashon, WA worth?

The TopHap Estimate for 20109 78th Pl Sw, Vashon, WA is $773,548 as of Aug 30, 2026. The likely range is $633,501 to $913,595. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 20109 78th Pl Sw, Vashon, WA last sell?

20109 78th Pl Sw, Vashon, WA last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 20109 78th Pl Sw, Vashon, WA?

20109 78th Pl Sw, Vashon, WA has 5 bedrooms, 2 bathrooms and 1,890 square feet of living space.

When was 20109 78th Pl Sw, Vashon, WA built?

20109 78th Pl Sw, Vashon, WA was built in 1983, making it 43 years old. The building has 1 story.

What schools serve 20109 78th Pl Sw, Vashon, WA?

20109 78th Pl Sw, Vashon, WA is assigned to Chautauqua Elementary School (elementary), rated A-; McMurray Middle School (middle), rated A; Vashon Island High School (high), rated A. All sit in Vashon Island School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 20109 78th Pl Sw, Vashon, WA compare to other homes in Vashon 98070?

Among the 5,181 homes in Vashon 98070, it is worth more than 29% of them ($773,548 against a typical $934,136), its price per square foot is higher than 18% of them ($409 against a typical $546), it is bigger than 55% of them (1,890 ft² against a typical 1,790 ft²), its lot is bigger than 60% of them (1.72 ac against a typical 1.01 ac) and it is newer than 65% of them (1983 against a typical 1972). Measured against all of King County, it is worth more than 46% of homes there. These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 20109 78th Pl Sw, Vashon, WA?

The 2026 property tax bill for 20109 78th Pl Sw, Vashon, WA was $8,844. The county assessed it at $788,000.

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