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Single Family ResidenceResidential
$678,927$780 / 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 97How 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

9830 SW 148TH ST

VASHON, WA 98070
3
Beds
1
Baths
870 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.
0.37 ac
Lot SizeThe size of the land the home sits on, from county records.
1960
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.

Valuation

$679K
$660K low$698K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$6,486 (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.$568,000 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$141,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$427,000
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$554,000
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$568,000

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyKING
Lot (acres)The size of the land the home sits on, from county records.0.37
HeatingThe type of heating system in the home.Forced Air With Air Conditioning
FireplaceWhether the home has a fireplace, and what kind.Yes
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(2)

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%

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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

9830 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.

  • Worth less than 82% of homes in Vashon 98070
  • Costs more per square foot than 91% of homes in King County
  • Smaller than 92% of homes in King County
  • Has a smaller lot than 78% of homes in Vashon 98070
  • Older than 71% of homes in King County

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 18% 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$678,927
CheaperTypical $936,025Pricier

Pricier than 18% of homes nearby

Price per ft²$780
CheaperTypical $545Pricier

Pricier than 88% of homes nearby

Living area870 ft²
SmallerTypical 1,790 ft²Bigger

Bigger than 9% of homes nearby

Lot size0.37 ac
SmallerTypical 1.01 acBigger

Bigger than 22% of homes nearby

Year built1960
OlderTypical 1972Newer

Newer than 40% of homes nearby

How 9830 Sw 148th St ranks against every home in each area.
MeasureThis homeVashon NorthVashon 98070King County
Estimated valuepricier than$678,92722% of homes18% of homes36% of homes
Price per ft²pricier than$78090% of homes88% of homes91% of homes
Living areabigger than870 ft²11% of homes9% of homes8% of homes
Lot sizebigger than0.37 ac25% of homes22% of homes73% of homes
Year builtnewer than196044% of homes40% of homes29% of homes

About 9830 Sw 148th St

How much is 9830 Sw 148th St, Vashon, WA worth?

The TopHap Estimate for 9830 Sw 148th St, Vashon, WA is $678,927 as of Aug 30, 2026. The likely range is $660,306 to $697,548. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 9830 Sw 148th St, Vashon, WA last sell?

9830 Sw 148th St, Vashon, WA last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 9830 Sw 148th St, Vashon, WA?

9830 Sw 148th St, Vashon, WA has 3 bedrooms, 1 bathrooms, 870 square feet of living space and a 0.37-acre lot.

When was 9830 Sw 148th St, Vashon, WA built?

9830 Sw 148th St, Vashon, WA was built in 1960, making it 66 years old. The building has 1 story.

What schools serve 9830 Sw 148th St, Vashon, WA?

9830 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 9830 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 18% of them ($678,927 against a typical $936,025), its price per square foot is higher than 88% of them ($780 against a typical $545), it is bigger than 9% of them (870 ft² against a typical 1,790 ft²), its lot is bigger than 22% of them (0.37 ac against a typical 1.01 ac) and it is newer than 40% of them (1960 against a typical 1972). Measured against all of King County, it is worth more than 36% 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 9830 Sw 148th St, Vashon, WA?

The 2026 property tax bill for 9830 Sw 148th St, Vashon, WA was $6,486. The county assessed it at $568,000.

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