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Single Family ResidenceResidential
$517,025$489 / 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 96How 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

20421 STATE ROUTE 20

COUPEVILLE, WA 98239
2
Beds
2
Baths
1,058 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.
4.82 ac
Lot SizeThe size of the land the home sits on, from county records.
1986
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.

Valuation

$517K
$498K low$536K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$910 (2025)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$482,932 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$338,611
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$144,321
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$445,941
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$482,932

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.29
44
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
21
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
37
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
41
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
3
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.29 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%
FEMA Flood ZoneFEMA's flood zone for this address. Zones starting with A or V are high risk, and lenders usually require flood insurance there.minimal

Scores 0–100; higher = greater projected risk.

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyISLAND
Lot (acres)The size of the land the home sits on, from county records.4.82
RoofThe main material covering the roof, such as asphalt shingle or tile.Composition Shingle
CoolingThe type of cooling or air conditioning in the home.Yes
PoolWhether the property has a pool, and what kind, such as in-ground.No
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Porch · 414 ft²

Transaction History(3)

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.

H
Coupeville High SchoolB-
High · Grades 9–12 · 1.3 mi
M
Coupeville Middle SchoolB
Middle · Grades 6–8 · 1.3 mi
E
Coupeville Elementary SchoolB
Elementary · Grades PK–5 · 1.5 mi

District: Coupeville School District

Neighborhood · ZIP 98239These 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.130
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.105
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.276

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.84%
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.7.0%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.1%
PopulationHow many people live in this area.7,949
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.185 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$81,783
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$104,904
Average tempThe average temperature here across a full year.50°F
Annual precipHow much rain and melted snow falls here in a typical year.21 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.33%

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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

20421 State Route 20 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 75% of homes in Coupeville 98239
  • Costs more per square foot than 80% of homes in Island County
  • Smaller than 85% of homes in Coupeville 98239
  • Has a bigger lot than 81% of homes in Coupeville 98239

What homes are worth in Coupeville 98239

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

This home
$344K$1.5M

This home is worth more than 25% of homes in Coupeville 98239.

How it measures up in Coupeville 98239

The dot is this home. The mark in the middle is the typical home in Coupeville 98239.

Estimated value$517,025
CheaperTypical $664,075Pricier

Pricier than 25% of homes nearby

Price per ft²$489
CheaperTypical $383Pricier

Pricier than 78% of homes nearby

Living area1,058 ft²
SmallerTypical 1,690 ft²Bigger

Bigger than 15% of homes nearby

Lot size4.82 ac
SmallerTypical 0.53 acBigger

Bigger than 81% of homes nearby

Year built1986
OlderTypical 1990Newer

Newer than 45% of homes nearby

How 20421 State Route 20 ranks against every home in each area.
MeasureThis homeCoupeville 98239Island County
Estimated valuepricier than$517,02525% of homes33% of homes
Price per ft²pricier than$48978% of homes80% of homes
Living areabigger than1,058 ft²15% of homes15% of homes
Lot sizebigger than4.82 ac81% of homes80% of homes
Year builtnewer than198645% of homes47% of homes

About 20421 State Route 20

How much is 20421 State Route 20, Coupeville, WA worth?

The TopHap Estimate for 20421 State Route 20, Coupeville, WA is $517,025 as of Aug 30, 2026. The likely range is $498,037 to $536,013. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 20421 State Route 20, Coupeville, WA last sell?

20421 State Route 20, Coupeville, WA last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 20421 State Route 20, Coupeville, WA?

20421 State Route 20, Coupeville, WA has 2 bedrooms, 2 bathrooms, 1,058 square feet of living space and a 4.82-acre lot.

When was 20421 State Route 20, Coupeville, WA built?

20421 State Route 20, Coupeville, WA was built in 1986, making it 40 years old. The building has 1 story.

What schools serve 20421 State Route 20, Coupeville, WA?

20421 State Route 20, Coupeville, WA is assigned to Coupeville High School (high), rated B-; Coupeville Middle School (middle), rated B; Coupeville Elementary School (elementary), rated B. All sit in Coupeville School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 20421 State Route 20, Coupeville, WA compare to other homes in Coupeville 98239?

Among the 4,332 homes in Coupeville 98239, it is worth more than 25% of them ($517,025 against a typical $664,075), its price per square foot is higher than 78% of them ($489 against a typical $383), it is bigger than 15% of them (1,058 ft² against a typical 1,690 ft²), its lot is bigger than 81% of them (4.82 ac against a typical 0.53 ac) and it is newer than 45% of them (1986 against a typical 1990). Measured against all of Island County, it is worth more than 33% 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 20421 State Route 20, Coupeville, WA?

The 2025 property tax bill for 20421 State Route 20, Coupeville, WA was $910. The county assessed it at $482,932.

More homes on State Route 20

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