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Single Family ResidenceResidential
$423,962$511 / 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 94How 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

31646 8TH PL SW

FEDERAL WAY, WA 98023
2
Beds
1
Baths
830 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.
0.17 ac
Lot SizeThe size of the land the home sits on, from county records.
1981
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$424K
$397K low$451K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,595 (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.$439,000 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$159,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$280,000
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$425,000
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$439,000

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.0.17
HeatingThe type of heating system in the home.Forced Air With Air Conditioning
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, Attached
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
Lakota Middle SchoolC+
Middle · Grades 6–8 · 0.4 mi
E
Lake Grove Elementary SchoolD-
Elementary · Grades KG–5 · 0.6 mi
H
Federal Way High SchoolD+
High · Grades 9–12 · 1.6 mi

District: Federal Way School District

Neighborhood · ZIP 98023These 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.63
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.112
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.255

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.96%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.25%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.7.5%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.3%
PopulationHow many people live in this area.52,813
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.4,507 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$98,962
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$120,405
Average tempThe average temperature here across a full year.51°F
Annual precipHow much rain and melted snow falls here in a typical year.41 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

31646 8th 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 90% of homes in King County
  • Costs more per square foot than 98% of homes in Federal Way 98023
  • Smaller than 97% of homes in Federal Way 98023
  • Has a smaller lot than 85% of homes in Mirror Lake
  • Newer than 77% of homes in Mirror Lake

What homes are worth in Federal Way 98023

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

This home
$251K$1.1M

This home is worth more than 13% of homes in Federal Way 98023.

How it measures up in Federal Way 98023

The dot is this home. The mark in the middle is the typical home in Federal Way 98023.

Estimated value$423,962
CheaperTypical $590,762Pricier

Pricier than 13% of homes nearby

Price per ft²$511
CheaperTypical $315Pricier

Pricier than 98% of homes nearby

Living area830 ft²
SmallerTypical 1,889 ft²Bigger

Bigger than 3% of homes nearby

Lot size0.17 ac
SmallerTypical 0.2 acBigger

Bigger than 19% of homes nearby

Year built1981
OlderTypical 1979Newer

Newer than 56% of homes nearby

How 31646 8th Pl Sw ranks against every home in each area.
MeasureThis homeMirror LakeFederal Way 98023King County
Estimated valuepricier than$423,96221% of homes13% of homes10% of homes
Price per ft²pricier than$51193% of homes98% of homes54% of homes
Living areabigger than830 ft²11% of homes3% of homes6% of homes
Lot sizebigger than0.17 ac15% of homes19% of homes37% of homes
Year builtnewer than198177% of homes56% of homes55% of homes

About 31646 8th Pl Sw

How much is 31646 8th Pl Sw, Federal Way, WA worth?

The TopHap Estimate for 31646 8th Pl Sw, Federal Way, WA is $423,962 as of Aug 30, 2026. The likely range is $397,263 to $450,661. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 31646 8th Pl Sw, Federal Way, WA last sell?

31646 8th Pl Sw, Federal Way, WA last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 31646 8th Pl Sw, Federal Way, WA?

31646 8th Pl Sw, Federal Way, WA has 2 bedrooms, 1 bathrooms, 830 square feet of living space and a 0.17-acre lot.

When was 31646 8th Pl Sw, Federal Way, WA built?

31646 8th Pl Sw, Federal Way, WA was built in 1981, making it 45 years old. The building has 1 story.

What schools serve 31646 8th Pl Sw, Federal Way, WA?

31646 8th Pl Sw, Federal Way, WA is assigned to Lakota Middle School (middle), rated C+; Lake Grove Elementary School (elementary), rated D-; Federal Way High School (high), rated D+. All sit in Federal Way School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 31646 8th Pl Sw, Federal Way, WA compare to other homes in Federal Way 98023?

Among the 13,923 homes in Federal Way 98023, it is worth more than 13% of them ($423,962 against a typical $590,762), its price per square foot is higher than 98% of them ($511 against a typical $315), it is bigger than 3% of them (830 ft² against a typical 1,889 ft²), its lot is bigger than 19% of them (0.17 ac against a typical 0.2 ac) and it is newer than 56% of them (1981 against a typical 1979). Measured against all of King County, it is worth more than 10% 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 31646 8th Pl Sw, Federal Way, WA?

The 2026 property tax bill for 31646 8th Pl Sw, Federal Way, WA was $4,595. The county assessed it at $439,000.

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