Skip to content
Skip to content
TopHapOpen in map
Single Family ResidenceResidential
$776,917$225 / 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 95How 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 $805,000 on Oct 25, 2024

10354 SW KOSO ST

TUALATIN, OR 97062
4
Beds
3
Baths
3,459 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.
2006
Year BuiltThe year the home was originally built, according to county records.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$777K
$740K low$813K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$805,000 · Oct 25, 2024

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$10,801 (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.$594,330 (2026)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$577,020
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$827,090

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.32
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
16
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
41
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
95
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
10
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.0.14
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.Deck · 40 ft²Patio · 264 ft²Porch · 78 ft²

Transaction History(4)

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
Tualatin High SchoolC-
High · Grades 9–12 · 0.5 mi
E
Edward Byrom Elementary SchoolA-
Elementary · Grades KG–5 · 0.7 mi
M
Hazelbrook Middle SchoolC
Middle · Grades 6–8 · 2.5 mi

District: Tigard-Tualatin School District

Neighborhood · ZIP 97062These 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.107
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.108
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.183

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.28%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.8.8%
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.29,385
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.2,046 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$105,053
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$129,327
Average tempThe average temperature here across a full year.53°F
Annual precipHow much rain and melted snow falls here in a typical year.44 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.48%

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

10354 Sw Koso 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 more than 85% of homes in Washington County
  • Costs less per square foot than 98% of homes in Tualatin 97062
  • Bigger than 95% of homes in Washington County
  • Has a smaller lot than 93% of homes in Ibach
  • Newer than 91% of homes in Tualatin 97062

What homes are worth in Tualatin 97062

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

This home
$265K$1.7M

This home is worth more than 79% of homes in Tualatin 97062.

How it measures up in Tualatin 97062

The dot is this home. The mark in the middle is the typical home in Tualatin 97062.

Estimated value$776,917
CheaperTypical $622,174Pricier

Pricier than 79% of homes nearby

Price per ft²$225
CheaperTypical $294Pricier

Pricier than 2% of homes nearby

Living area3,459 ft²
SmallerTypical 2,077 ft²Bigger

Bigger than 91% of homes nearby

Lot size0.14 ac
SmallerTypical 0.18 acBigger

Bigger than 20% of homes nearby

Year built2006
OlderTypical 1990Newer

Newer than 91% of homes nearby

How 10354 Sw Koso St ranks against every home in each area.
MeasureThis homeIbachTualatin 97062Washington County
Estimated valuepricier than$776,91757% of homes79% of homes85% of homes
Price per ft²pricier than$2253% of homes2% of homes5% of homes
Living areabigger than3,459 ft²88% of homes91% of homes95% of homes
Lot sizebigger than0.14 ac7% of homes20% of homes37% of homes
Year builtnewer than200688% of homes91% of homes82% of homes

About 10354 Sw Koso St

How much is 10354 Sw Koso St, Tualatin, OR worth?

The TopHap Estimate for 10354 Sw Koso St, Tualatin, OR is $776,917 as of Sep 24, 2026. The likely range is $740,465 to $813,369. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 10354 Sw Koso St, Tualatin, OR last sell?

10354 Sw Koso St, Tualatin, OR last sold on Oct 25, 2024 for $805,000, according to the county's recorded deed. TopHap holds 3 recorded sales for this parcel.

How big is 10354 Sw Koso St, Tualatin, OR?

10354 Sw Koso St, Tualatin, OR has 4 bedrooms, 3 bathrooms, 3,459 square feet of living space and a 0.14-acre lot.

When was 10354 Sw Koso St, Tualatin, OR built?

10354 Sw Koso St, Tualatin, OR was built in 2006, making it 20 years old.

What schools serve 10354 Sw Koso St, Tualatin, OR?

10354 Sw Koso St, Tualatin, OR is assigned to Tualatin High School (high), rated C-; Edward Byrom Elementary School (elementary), rated A-; Hazelbrook Middle School (middle), rated C. All sit in Tigard-Tualatin School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 10354 Sw Koso St, Tualatin, OR compare to other homes in Tualatin 97062?

Among the 7,845 homes in Tualatin 97062, it is worth more than 79% of them ($776,917 against a typical $622,174), its price per square foot is higher than 2% of them ($225 against a typical $294), it is bigger than 91% of them (3,459 ft² against a typical 2,077 ft²), its lot is bigger than 20% of them (0.14 ac against a typical 0.18 ac) and it is newer than 91% of them (2006 against a typical 1990). Measured against all of Washington County, it is worth more than 85% 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 10354 Sw Koso St, Tualatin, OR?

The 2025 property tax bill for 10354 Sw Koso St, Tualatin, OR was $10,801. The county assessed it at $594,330.

More homes on Sw Koso St

Closest homes

More homes in Tualatin 97062

Assigned schools

Explore the area

See this home in context

Open 10354 Sw Koso 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