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Single Family ResidenceResidential
$510,855$299 / 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 98How 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 $351,000 on Nov 30, 2017

6423 SW ONASSIS PL

BEAVERTON, OR 97007
4
Beds
3
Baths
1,706 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.
2,614 ft²
Lot SizeThe size of the land the home sits on, from county records.
2008
Year BuiltThe year the home was originally built, according to county records.
1
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$511K
$498K low$524K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$351,000 · Nov 30, 2017

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$5,507 (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.$299,000 (2026)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$290,300
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$510,350

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.34
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
1
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
39
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
94
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
38
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.

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
CountyWASHINGTON
Lot (acres)The size of the land the home sits on, from county records.0.06
ConstructionThe main material the home's frame and walls are built from.Wood (Unspecified)
RoofThe main material covering the roof, such as asphalt shingle or tile.Composition Shingle
HeatingThe type of heating system in the home.Yes
CoolingThe type of cooling or air conditioning in the home.Central
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
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Patio · 120 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
Mountain View Middle SchoolD
Middle · Grades 6–8 · 0.5 mi
E
Errol Hassell Elementary SchoolB-
Elementary · Grades KG–5 · 0.5 mi
H
Aloha High SchoolB-
High · Grades 9–12 · 0.9 mi

District: Beaverton School District 48j

Neighborhood · ZIP 97007These 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.83
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.106
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.184

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.97%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.33%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.6.5%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.2%
PopulationHow many people live in this area.50,309
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.2,756 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$111,923
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$140,460
Average tempThe average temperature here across a full year.52°F
Annual precipHow much rain and melted snow falls here in a typical year.41 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.48%

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

6423 Sw Onassis Pl 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 72% of homes in Cooper Mountain - Aloha South
  • Has a smaller lot than 95% of homes in Cooper Mountain - Aloha South
  • Newer than 87% of homes in Cooper Mountain - Aloha South

What homes are worth in Beaverton 97007

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

This home
$260K$1.1M

This home is worth more than 30% of homes in Beaverton 97007.

How it measures up in Beaverton 97007

The dot is this home. The mark in the middle is the typical home in Beaverton 97007.

Estimated value$510,855
CheaperTypical $598,278Pricier

Pricier than 30% of homes nearby

Price per ft²$299
CheaperTypical $288Pricier

Pricier than 60% of homes nearby

Living area1,706 ft²
SmallerTypical 2,006 ft²Bigger

Bigger than 36% of homes nearby

Lot size2,614 ft²
SmallerTypical 0.16 acBigger

Bigger than 13% of homes nearby

Year built2008
OlderTypical 1994Newer

Newer than 84% of homes nearby

How 6423 Sw Onassis Pl ranks against every home in each area.
MeasureThis homeCooper Mountain - Aloha SouthBeaverton 97007Washington County
Estimated valuepricier than$510,85528% of homes30% of homes38% of homes
Price per ft²pricier than$29959% of homes60% of homes49% of homes
Living areabigger than1,706 ft²37% of homes36% of homes46% of homes
Lot sizebigger than2,614 ft²5% of homes13% of homes13% of homes
Year builtnewer than200887% of homes84% of homes84% of homes

About 6423 Sw Onassis Pl

How much is 6423 Sw Onassis Pl, Beaverton, OR worth?

The TopHap Estimate for 6423 Sw Onassis Pl, Beaverton, OR is $510,855 as of Aug 30, 2026. The likely range is $498,125 to $523,585. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 6423 Sw Onassis Pl, Beaverton, OR last sell?

6423 Sw Onassis Pl, Beaverton, OR last sold on Nov 30, 2017 for $351,000, according to the county's recorded deed. TopHap holds 4 recorded sales for this parcel.

How big is 6423 Sw Onassis Pl, Beaverton, OR?

6423 Sw Onassis Pl, Beaverton, OR has 4 bedrooms, 3 bathrooms, 1,706 square feet of living space and a 0.06-acre lot.

When was 6423 Sw Onassis Pl, Beaverton, OR built?

6423 Sw Onassis Pl, Beaverton, OR was built in 2008, making it 18 years old.

What schools serve 6423 Sw Onassis Pl, Beaverton, OR?

6423 Sw Onassis Pl, Beaverton, OR is assigned to Mountain View Middle School (middle), rated D; Errol Hassell Elementary School (elementary), rated B-; Aloha High School (high), rated B-. All sit in Beaverton School District 48j. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 6423 Sw Onassis Pl, Beaverton, OR compare to other homes in Beaverton 97007?

Among the 16,678 homes in Beaverton 97007, it is worth more than 30% of them ($510,855 against a typical $598,278), its price per square foot is higher than 60% of them ($299 against a typical $288), it is bigger than 36% of them (1,706 ft² against a typical 2,006 ft²), its lot is bigger than 13% of them (2,614 ft² against a typical 0.16 ac) and it is newer than 84% of them (2008 against a typical 1994). Measured against all of Washington County, it is worth more than 38% 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 6423 Sw Onassis Pl, Beaverton, OR?

The 2025 property tax bill for 6423 Sw Onassis Pl, Beaverton, OR was $5,507. The county assessed it at $299,000.

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