Skip to content
Skip to content
TopHapOpen in map
Single Family ResidenceResidential
$1,158,369$560 / 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 90How 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 $1,150,000 on May 1, 2026

4015 W PROSPER ST

SEATTLE, WA 98199
3
Beds
1.8
Baths
2,070 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.
0.11 ac
Lot SizeThe size of the land the home sits on, from county records.
1948
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

$1.2M
$1M low$1.3M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$1,150,000 · May 1, 2026

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$11,905 (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.$1,128,000 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$726,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$402,000
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$1,102,000
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$1,128,000

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.0.11
HeatingThe type of heating system in the home.Hot Water
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
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Deck · 120 ft²

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
Lawton Elementary SchoolA
Elementary · Grades KG–5 · 1.0 mi
H
Ballard High SchoolA+
High · Grades 9–12 · 2.5 mi
M
McClure Middle SchoolA-
Middle · Grades 6–8 · 2.5 mi

District: Seattle School District

Neighborhood · ZIP 98199These 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.85
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.103
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.364

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.95%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.41%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.6.0%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.6%
PopulationHow many people live in this area.23,501
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.4,060 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$156,493
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$193,204
Average tempThe average temperature here across a full year.52°F
Annual precipHow much rain and melted snow falls here in a typical year.38 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.43%

Owner Tools

Do you own this home?
Claim this home

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

4015 W Prosper 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 92% of homes in Briarcliff
  • Costs less per square foot than 93% of homes in Briarcliff
  • Smaller than 69% of homes in Briarcliff
  • Has a smaller lot than 90% of homes in Briarcliff
  • Older than 81% of homes in King County

What homes are worth in Seattle 98199

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

This home
$306K$3.6M

This home is worth more than 40% of homes in Seattle 98199.

How it measures up in Seattle 98199

The dot is this home. The mark in the middle is the typical home in Seattle 98199.

Estimated value$1,158,369
CheaperTypical $1,303,885Pricier

Pricier than 40% of homes nearby

Price per ft²$560
CheaperTypical $653Pricier

Pricier than 30% of homes nearby

Living area2,070 ft²
SmallerTypical 2,000 ft²Bigger

Bigger than 53% of homes nearby

Lot size0.11 ac
SmallerTypical 0.14 acBigger

Bigger than 22% of homes nearby

Year built1948
OlderTypical 1952Newer

Newer than 43% of homes nearby

How 4015 W Prosper St ranks against every home in each area.
MeasureThis homeBriarcliffSeattle 98199King County
Estimated valuepricier than$1,158,3698% of homes40% of homes71% of homes
Price per ft²pricier than$5607% of homes30% of homes64% of homes
Living areabigger than2,070 ft²31% of homes53% of homes59% of homes
Lot sizebigger than0.11 ac10% of homes22% of homes15% of homes
Year builtnewer than194861% of homes43% of homes19% of homes

About 4015 W Prosper St

How much is 4015 W Prosper St, Seattle, WA worth?

The TopHap Estimate for 4015 W Prosper St, Seattle, WA is $1,158,369 as of Aug 30, 2026. The likely range is $1,047,688 to $1,269,050. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 4015 W Prosper St, Seattle, WA last sell?

4015 W Prosper St, Seattle, WA last sold on May 1, 2026 for $1,150,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 4015 W Prosper St, Seattle, WA?

4015 W Prosper St, Seattle, WA has 3 bedrooms, 1.8 bathrooms, 2,070 square feet of living space and a 0.11-acre lot.

When was 4015 W Prosper St, Seattle, WA built?

4015 W Prosper St, Seattle, WA was built in 1948, making it 78 years old. The building has 1 story.

What schools serve 4015 W Prosper St, Seattle, WA?

4015 W Prosper St, Seattle, WA is assigned to Lawton Elementary School (elementary), rated A; Ballard High School (high), rated A+; McClure Middle School (middle), rated A-. All sit in Seattle School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 4015 W Prosper St, Seattle, WA compare to other homes in Seattle 98199?

Among the 8,105 homes in Seattle 98199, it is worth more than 40% of them ($1,158,369 against a typical $1,303,885), its price per square foot is higher than 30% of them ($560 against a typical $653), it is bigger than 53% of them (2,070 ft² against a typical 2,000 ft²), its lot is bigger than 22% of them (0.11 ac against a typical 0.14 ac) and it is newer than 43% of them (1948 against a typical 1952). Measured against all of King County, it is worth more than 71% 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 4015 W Prosper St, Seattle, WA?

The 2026 property tax bill for 4015 W Prosper St, Seattle, WA was $11,905. The county assessed it at $1,128,000.

More homes on W Prosper St

Closest homes

More homes in Seattle 98199

Assigned schools

Explore the area

See this home in context

Open 4015 W Prosper St on TopHap’s interactive map to compare it against every sale nearby, overlay school zones and flood risk, and run a CMA.

Open in map
A flyover of TopHap's photorealistic 3D map, with recorded sale prices pinned to homes
Search any address, city, zip, or county…3D$1.9M$6.25MOpen in map