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Duplex (2 Units, Any Combination)Residential
Last sold for $750,000 on Jan 29, 2021

521 WELLS AVE S

RENTON, WA 98057
6
Beds
4.5
Baths
2,997 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.
0.14 ac
Lot SizeThe size of the land the home sits on, from county records.
2005
Year BuiltThe year the home was originally built, according to county records.

Valuation

Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$750,000 · Jan 29, 2021

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,275 (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.$383,500 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$172,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$211,500
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$383,500

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Duplex (2 Units, Any Combination)
StyleThe architectural style of the home, such as ranch or colonial.Duplex Single
CountyKING
Lot (acres)The size of the land the home sits on, from county records.0.14
HeatingThe type of heating system in the home.Forced Air With Air Conditioning
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, Attached
PoolWhether the property has a pool, and what kind, such as in-ground.No

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%

Ownership

OccupancyWhether the owner appears to live here or somewhere else. It is inferred from the mailing address on record.Absentee owner
Company ownedWhether the owner is a company or trust rather than a person.Yes

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

521 Wells 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.

  • Bigger than 87% of homes in Renton 98057
  • Has a smaller lot than 75% of homes in King County
  • Newer than 92% 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.

Living area2,997 ft²
SmallerTypical 1,520 ft²Bigger

Bigger than 87% of homes nearby

Lot size0.14 ac
SmallerTypical 0.17 acBigger

Bigger than 36% of homes nearby

Year built2005
OlderTypical 1960Newer

Newer than 92% of homes nearby

How 521 Wells Ave S ranks against every home in each area.
MeasureThis homeRenton 98057King County
Living areabigger than2,997 ft²87% of homes84% of homes
Lot sizebigger than0.14 ac36% of homes25% of homes
Year builtnewer than200592% of homes84% of homes

About 521 Wells Ave S

When did 521 Wells Ave S, Renton, WA last sell?

521 Wells Ave S, Renton, WA last sold on Jan 29, 2021 for $750,000, according to the county's recorded deed.

How big is 521 Wells Ave S, Renton, WA?

521 Wells Ave S, Renton, WA has 6 bedrooms, 4.5 bathrooms, 2,997 square feet of living space and a 0.14-acre lot.

When was 521 Wells Ave S, Renton, WA built?

521 Wells Ave S, Renton, WA was built in 2005, making it 21 years old. It is a duplex single home.

How does 521 Wells Ave S, Renton, WA compare to other homes in Renton 98057?

Among the 2,604 homes in Renton 98057, it is bigger than 87% of them (2,997 ft² against a typical 1,520 ft²), its lot is bigger than 36% of them (0.14 ac against a typical 0.17 ac) and it is newer than 92% of them (2005 against a typical 1960). These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 521 Wells Ave S, Renton, WA?

The 2026 property tax bill for 521 Wells Ave S, Renton, WA was $4,275. The county assessed it at $383,500.

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