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Single Family ResidenceResidential
$891,177$446 / 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 95How 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
Last sold for $192,500 on Jun 25, 1997

9850 SW 148TH ST

VASHON, WA 98070
3
Beds
2.5
Baths
2,000 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.
2.46 ac
Lot SizeThe size of the land the home sits on, from county records.
1987
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
5
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$891K
$844K low$938K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$192,500 · Jun 25, 1997

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$8,555 (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.$761,000 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$206,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$555,000
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$786,000
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$761,000

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.Floor/Wall Furnace
FireplaceWhether the home has a fireplace, and what kind.Yes
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Detached
PoolWhether the property has a pool, and what kind, such as in-ground.No
ViewThe type of view from the property, or another feature of the site that affects value.Highway
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Deck · 460 ft²

Transaction History(4)

Sales and refinances filed with the county for this home. Not every transfer is a normal sale, so check the type before comparing prices.

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

M
McMurray Middle SchoolA
Middle · Grades 6–8 · 3.1 mi
E
Chautauqua Elementary SchoolA-
Elementary · Grades PK–5 · 3.2 mi
H
Vashon Island High SchoolA
High · Grades 9–12 · 3.4 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%

Owner Tools

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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

9850 Sw 148th St 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.

  • Costs less per square foot than 75% of homes in Vashon 98070
  • Has a bigger lot than 90% of homes in King County
  • Newer than 72% 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
$388K$2.1M

This home is worth more than 44% 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$891,177
CheaperTypical $936,025Pricier

Pricier than 44% of homes nearby

Price per ft²$446
CheaperTypical $545Pricier

Pricier than 25% of homes nearby

Living area2,000 ft²
SmallerTypical 1,790 ft²Bigger

Bigger than 60% of homes nearby

Lot size2.46 ac
SmallerTypical 1.01 acBigger

Bigger than 68% of homes nearby

Year built1987
OlderTypical 1972Newer

Newer than 68% of homes nearby

How 9850 Sw 148th St ranks against every home in each area.
MeasureThis homeVashon NorthVashon 98070King County
Estimated valuepricier than$891,17751% of homes44% of homes56% of homes
Price per ft²pricier than$44628% of homes25% of homes40% of homes
Living areabigger than2,000 ft²62% of homes60% of homes57% of homes
Lot sizebigger than2.46 ac72% of homes68% of homes90% of homes
Year builtnewer than198772% of homes68% of homes61% of homes

About 9850 Sw 148th St

How much is 9850 Sw 148th St, Vashon, WA worth?

The TopHap Estimate for 9850 Sw 148th St, Vashon, WA is $891,177 as of Aug 30, 2026. The likely range is $844,143 to $938,211. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 9850 Sw 148th St, Vashon, WA last sell?

9850 Sw 148th St, Vashon, WA last sold on Jun 25, 1997 for $192,500, according to the county's recorded deed. TopHap holds 4 recorded sales for this parcel.

How big is 9850 Sw 148th St, Vashon, WA?

9850 Sw 148th St, Vashon, WA has 3 bedrooms, 2.5 bathrooms and 2,000 square feet of living space.

When was 9850 Sw 148th St, Vashon, WA built?

9850 Sw 148th St, Vashon, WA was built in 1987, making it 39 years old. The building has 2 stories.

What schools serve 9850 Sw 148th St, Vashon, WA?

9850 Sw 148th St, Vashon, WA is assigned to McMurray Middle School (middle), rated A; Chautauqua Elementary School (elementary), 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 9850 Sw 148th St, Vashon, WA compare to other homes in Vashon 98070?

Among the 5,181 homes in Vashon 98070, it is worth more than 44% of them ($891,177 against a typical $936,025), its price per square foot is higher than 25% of them ($446 against a typical $545), it is bigger than 60% of them (2,000 ft² against a typical 1,790 ft²), its lot is bigger than 68% of them (2.46 ac against a typical 1.01 ac) and it is newer than 68% of them (1987 against a typical 1972). Measured against all of King County, it is worth more than 56% 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 9850 Sw 148th St, Vashon, WA?

The 2026 property tax bill for 9850 Sw 148th St, Vashon, WA was $8,555. The county assessed it at $761,000.

More homes on Sw 148th St

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Assigned schools

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