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Single Family ResidenceResidential
$729,805$320 / 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 83How 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 $429,950 on Aug 13, 2015

12421 87TH AVE S

RENTON, WA 98057
4
Beds
2.8
Baths
2,280 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.
0.3 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

$730K
$607K low$852K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$429,950 · Aug 13, 2015

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$8,123 (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.$673,000 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$376,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$297,000
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$692,000
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$673,000

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.0.30
HeatingThe type of heating system in the home.Forced Air With Air Conditioning
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 · 480 ft²

Transaction History(5)

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
Dimmitt Middle SchoolB-
Middle · Grades 6–8 · 0.4 mi
E
Bryn Mawr Elementary SchoolB-
Elementary · Grades KG–5 · 0.6 mi
H
Renton High SchoolD-
High · Grades 9–12 · 0.8 mi

District: Renton School District

Neighborhood · ZIP 98057These 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.149
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.111
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.92%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.22%
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.1.5%
PopulationHow many people live in this area.15,169
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.2,407 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$74,518
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$92,695
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%

Owner Tools

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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

12421 87th Ave 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 more than 79% of homes in Renton 98057
  • Costs less per square foot than 89% of homes in King County
  • Bigger than 74% of homes in Renton 98057
  • Has a bigger lot than 94% of homes in Bryn Mawr
  • Older than 82% of homes in King County

What homes are worth in Renton 98057

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

This home
$230K$1.3M

This home is worth more than 79% of homes in Renton 98057.

How it measures up in Renton 98057

The dot is this home. The mark in the middle is the typical home in Renton 98057.

Estimated value$729,805
CheaperTypical $542,476Pricier

Pricier than 79% of homes nearby

Price per ft²$320
CheaperTypical $355Pricier

Pricier than 33% of homes nearby

Living area2,280 ft²
SmallerTypical 1,500 ft²Bigger

Bigger than 74% of homes nearby

Lot size0.3 ac
SmallerTypical 0.17 acBigger

Bigger than 71% of homes nearby

Year built1948
OlderTypical 1960Newer

Newer than 39% of homes nearby

How 12421 87th Ave S ranks against every home in each area.
MeasureThis homeBryn MawrRenton 98057King County
Estimated valuepricier than$729,80545% of homes79% of homes39% of homes
Price per ft²pricier than$32012% of homes33% of homes11% of homes
Living areabigger than2,280 ft²67% of homes74% of homes67% of homes
Lot sizebigger than0.3 ac94% of homes71% of homes68% of homes
Year builtnewer than194832% of homes39% of homes18% of homes

About 12421 87th Ave S

How much is 12421 87th Ave S, Renton, WA worth?

The TopHap Estimate for 12421 87th Ave S, Renton, WA is $729,805 as of Sep 24, 2026. The likely range is $607,322 to $852,288. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 12421 87th Ave S, Renton, WA last sell?

12421 87th Ave S, Renton, WA last sold on Aug 13, 2015 for $429,950, according to the county's recorded deed. TopHap holds 5 recorded sales for this parcel.

How big is 12421 87th Ave S, Renton, WA?

12421 87th Ave S, Renton, WA has 4 bedrooms, 2.8 bathrooms, 2,280 square feet of living space and a 0.30-acre lot.

When was 12421 87th Ave S, Renton, WA built?

12421 87th Ave S, Renton, WA was built in 1948, making it 78 years old. The building has 1 story.

What schools serve 12421 87th Ave S, Renton, WA?

12421 87th Ave S, Renton, WA is assigned to Dimmitt Middle School (middle), rated B-; Bryn Mawr Elementary School (elementary), rated B-; Renton High School (high), rated D-. All sit in Renton School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 12421 87th Ave S, Renton, WA compare to other homes in Renton 98057?

Among the 2,593 homes in Renton 98057, it is worth more than 79% of them ($729,805 against a typical $542,476), its price per square foot is higher than 33% of them ($320 against a typical $355), it is bigger than 74% of them (2,280 ft² against a typical 1,500 ft²), its lot is bigger than 71% of them (0.3 ac against a typical 0.17 ac) and it is newer than 39% of them (1948 against a typical 1960). Measured against all of King County, it is worth more than 39% 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 12421 87th Ave S, Renton, WA?

The 2026 property tax bill for 12421 87th Ave S, Renton, WA was $8,123. The county assessed it at $673,000.

More homes on 87th Ave S

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