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Single Family ResidenceResidential
$656,314$426 / 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
Last sold for $680,000 on Feb 8, 2022

421 WILLIAMS AVE N

RENTON, WA 98057
3
Beds
3.3
Baths
1,540 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.
4,200 ft²
Lot SizeThe size of the land the home sits on, from county records.
1914
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
1
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$656K
$615K low$698K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$680,000 · Feb 8, 2022

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$6,337 (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.$586,000 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$334,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$252,000
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$602,000
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$586,000

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.0.10
HeatingThe type of heating system in the home.Heat Pump
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 · 250 ft²

Transaction History(6)

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
Renton High SchoolD-
High · Grades 9–12 · 0.6 mi
E
Kennydale Elementary SchoolB+
Elementary · Grades KG–5 · 2.0 mi
M
Ridson Middle SchoolB+
Middle · Grades 6–8 · 3.7 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%

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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

421 Williams Ave N 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 89% of homes in Renton Farm
  • Costs more per square foot than 77% of homes in Renton 98057
  • Has a smaller lot than 94% of homes in Renton Farm
  • Older than 96% 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
$220K$1.1M

This home is worth more than 72% 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$656,314
CheaperTypical $534,713Pricier

Pricier than 72% of homes nearby

Price per ft²$426
CheaperTypical $350Pricier

Pricier than 77% of homes nearby

Living area1,540 ft²
SmallerTypical 1,510 ft²Bigger

Bigger than 51% of homes nearby

Lot size4,200 ft²
SmallerTypical 0.17 acBigger

Bigger than 7% of homes nearby

Year built1914
OlderTypical 1960Newer

Newer than 12% of homes nearby

How 421 Williams Ave N ranks against every home in each area.
MeasureThis homeRenton FarmRenton 98057King County
Estimated valuepricier than$656,31489% of homes72% of homes33% of homes
Price per ft²pricier than$42656% of homes77% of homes36% of homes
Living areabigger than1,540 ft²59% of homes51% of homes36% of homes
Lot sizebigger than4,200 ft²6% of homes7% of homes12% of homes
Year builtnewer than191415% of homes12% of homes4% of homes

About 421 Williams Ave N

How much is 421 Williams Ave N, Renton, WA worth?

The TopHap Estimate for 421 Williams Ave N, Renton, WA is $656,314 as of Aug 30, 2026. The likely range is $614,939 to $697,689. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 421 Williams Ave N, Renton, WA last sell?

421 Williams Ave N, Renton, WA last sold on Feb 8, 2022 for $680,000, according to the county's recorded deed. TopHap holds 5 recorded sales for this parcel.

How big is 421 Williams Ave N, Renton, WA?

421 Williams Ave N, Renton, WA has 3 bedrooms, 3.3 bathrooms, 1,540 square feet of living space and a 0.10-acre lot.

When was 421 Williams Ave N, Renton, WA built?

421 Williams Ave N, Renton, WA was built in 1914, making it 112 years old. The building has 1 story.

What schools serve 421 Williams Ave N, Renton, WA?

421 Williams Ave N, Renton, WA is assigned to Renton High School (high), rated D-; Kennydale Elementary School (elementary), rated B+; Ridson Middle School (middle), rated B+. All sit in Renton School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 421 Williams Ave N, Renton, WA compare to other homes in Renton 98057?

Among the 2,604 homes in Renton 98057, it is worth more than 72% of them ($656,314 against a typical $534,713), its price per square foot is higher than 77% of them ($426 against a typical $350), it is bigger than 51% of them (1,540 ft² against a typical 1,510 ft²), its lot is bigger than 7% of them (4,200 ft² against a typical 0.17 ac) and it is newer than 12% of them (1914 against a typical 1960). Measured against all of King 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 421 Williams Ave N, Renton, WA?

The 2026 property tax bill for 421 Williams Ave N, Renton, WA was $6,337. The county assessed it at $586,000.

More homes on Williams Ave N

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