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CondominiumResidential
$392,872$343 / 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 93How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Sep 24, 2026
Last sold for $415,000 on May 16, 2025

21082 40TH PL S

SEATAC, WA 98198
Building report
2
Beds
2
Baths
1,146 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.
11.96 ac
Lot SizeThe size of the land the home sits on, from county records.
2009
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
1
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$393K
$366K low$420K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$415,000 · May 16, 2025

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,071 (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.$381,000 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$51,200
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$329,800
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$415,000
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$381,000

Climate Risk

Overall riskThe average of the five hazard scores below, on a 0 to 100 scale. Higher means greater projected risk over the coming decades.47
50
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
23
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
43
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
92
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
31
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.14 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%

Scores 0–100; higher = greater projected risk.

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Condominium
StyleThe architectural style of the home, such as ranch or colonial.Condo/Apartment
CountyKING
ConstructionThe main material the home's frame and walls are built from.Wood (Unspecified)
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.

E
River Ridge Elementary SchoolF
Elementary · Grades KG–5 · 1.6 mi
M
Mill Creek Middle SchoolF
Middle · Grades 6–8 · 3.2 mi
H
Kentridge High SchoolA-
High · Grades 9–12 · 5.2 mi

District: Kent School District

Neighborhood · ZIP 98198These 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.87
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 100.260

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.93%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.20%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.12%
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.37,696
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.4,380 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$80,207
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$103,949
Average tempThe average temperature here across a full year.52°F
Annual precipHow much rain and melted snow falls here in a typical year.39 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

21082 40th Pl S 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 93% of homes in King County
  • Costs less per square foot than 85% of homes in King County
  • Smaller than 81% of homes in King County
  • Has a bigger lot than 98% of homes in Seattle 98198
  • Newer than 95% of homes in Seattle 98198

What homes are worth in Seattle 98198

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

This home
$241K$1.5M

This home is worth more than 14% of homes in Seattle 98198.

How it measures up in Seattle 98198

The dot is this home. The mark in the middle is the typical home in Seattle 98198.

Estimated value$392,872
CheaperTypical $595,113Pricier

Pricier than 14% of homes nearby

Price per ft²$343
CheaperTypical $368Pricier

Pricier than 35% of homes nearby

Living area1,146 ft²
SmallerTypical 1,583 ft²Bigger

Bigger than 21% of homes nearby

Lot size11.96 ac
SmallerTypical 0.22 acBigger

Bigger than 98% of homes nearby

Year built2009
OlderTypical 1969Newer

Newer than 95% of homes nearby

How 21082 40th Pl S ranks against every home in each area.
MeasureThis homeSeattle 98198King County
Estimated valuepricier than$392,87214% of homes7% of homes
Price per ft²pricier than$34335% of homes15% of homes
Living areabigger than1,146 ft²21% of homes19% of homes
Lot sizebigger than11.96 ac98% of homes98% of homes
Year builtnewer than200995% of homes88% of homes

About 21082 40th Pl S

How much is 21082 40th Pl S, Seatac, WA worth?

The TopHap Estimate for 21082 40th Pl S, Seatac, WA is $392,872 as of Sep 24, 2026. The likely range is $365,863 to $419,881. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21082 40th Pl S, Seatac, WA last sell?

21082 40th Pl S, Seatac, WA last sold on May 16, 2025 for $415,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 21082 40th Pl S, Seatac, WA?

21082 40th Pl S, Seatac, WA has 2 bedrooms, 2 bathrooms and 1,146 square feet of living space.

When was 21082 40th Pl S, Seatac, WA built?

21082 40th Pl S, Seatac, WA was built in 2009, making it 17 years old. It is a condo/apartment home. The building has 2 stories.

What schools serve 21082 40th Pl S, Seatac, WA?

21082 40th Pl S, Seatac, WA is assigned to River Ridge Elementary School (elementary), rated F; Mill Creek Middle School (middle), rated F; Kentridge High School (high), rated A-. All sit in Kent School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21082 40th Pl S, Seatac, WA compare to other homes in Seattle 98198?

Among the 9,855 homes in Seattle 98198, it is worth more than 14% of them ($392,872 against a typical $595,113), its price per square foot is higher than 35% of them ($343 against a typical $368), it is bigger than 21% of them (1,146 ft² against a typical 1,583 ft²), its lot is bigger than 98% of them (11.96 ac against a typical 0.22 ac) and it is newer than 95% of them (2009 against a typical 1969). Measured against all of King County, it is worth more than 7% 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 21082 40th Pl S, Seatac, WA?

The 2026 property tax bill for 21082 40th Pl S, Seatac, WA was $4,071. The county assessed it at $381,000.

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