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Single Family ResidenceResidential
$385,433$463 / 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 Jul 14, 2026
Last sold for $159,950 on Jul 19, 2005

18420 SW ROSA RD

BEAVERTON, OR 97078
2
Beds
1
Baths
832 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.
0.16 ac
Lot SizeThe size of the land the home sits on, from county records.
1960
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

$385K
$367K low$404K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$159,950 · Jul 19, 2005

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,189 (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.$173,810 (2026)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$168,750
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$413,190

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
Effective Year BuiltAn adjusted build year that accounts for condition and major remodels. A big renovation can make a home count as newer than it is.1970
Lot (acres)The size of the land the home sits on, from county records.0.16
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.Heat Pump
CoolingThe type of cooling or air conditioning in the home.Yes
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

Transaction History(3)

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
Aloha High SchoolB-
High · Grades 9–12 · 0.4 mi
M
Mountain View Middle SchoolD
Middle · Grades 6–8 · 0.5 mi
E
Kinnaman Elementary SchoolD
Elementary · Grades PK–5 · 0.9 mi

District: Beaverton School District 48j

Neighborhood · ZIP 97078These 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.84
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.96%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.21%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.12%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.3%
PopulationHow many people live in this area.27,026
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.3,082 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$83,144
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$107,401
Average tempThe average temperature here across a full year.53°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%

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

18420 Sw Rosa Rd 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 92% of homes in Beaverton 97078
  • Among the highest price per square foot in Cooper Mountain - Aloha North
  • Among the smallest homes in Cooper Mountain - Aloha North
  • Older than 94% of homes in Cooper Mountain - Aloha North

What homes are worth in Beaverton 97078

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

This home
$310K$713K

This home is worth more than 8% of homes in Beaverton 97078.

How it measures up in Beaverton 97078

The dot is this home. The mark in the middle is the typical home in Beaverton 97078.

Estimated value$385,433
CheaperTypical $492,489Pricier

Pricier than 8% of homes nearby

Price per ft²$463
CheaperTypical $321Pricier

Pricier than 97% of homes nearby

Living area832 ft²
SmallerTypical 1,528 ft²Bigger

Smaller than almost all homes nearby

Lot size0.16 ac
SmallerTypical 0.18 acBigger

Bigger than 42% of homes nearby

Year built1960
OlderTypical 1977Newer

Newer than 8% of homes nearby

How 18420 Sw Rosa Rd ranks against every home in each area.
MeasureThis homeCooper Mountain - Aloha NorthBeaverton 97078Washington County
Estimated valuepricier than$385,43311% of homes8% of homes11% of homes
Price per ft²pricier than$463almost all homes97% of homes98% of homes
Living areabigger than832 ft²almost no homesalmost no homes2% of homes
Lot sizebigger than0.16 ac57% of homes42% of homes51% of homes
Year builtnewer than19606% of homes8% of homes10% of homes

About 18420 Sw Rosa Rd

How much is 18420 Sw Rosa Rd, Beaverton, OR worth?

The TopHap Estimate for 18420 Sw Rosa Rd, Beaverton, OR is $385,433 as of Jul 14, 2026. The likely range is $367,321 to $403,545. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 18420 Sw Rosa Rd, Beaverton, OR last sell?

18420 Sw Rosa Rd, Beaverton, OR last sold on Jul 19, 2005 for $159,950, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 18420 Sw Rosa Rd, Beaverton, OR?

18420 Sw Rosa Rd, Beaverton, OR has 2 bedrooms, 1 bathrooms, 832 square feet of living space and a 0.16-acre lot.

When was 18420 Sw Rosa Rd, Beaverton, OR built?

18420 Sw Rosa Rd, Beaverton, OR was built in 1960, making it 66 years old.

What schools serve 18420 Sw Rosa Rd, Beaverton, OR?

18420 Sw Rosa Rd, Beaverton, OR is assigned to Aloha High School (high), rated B-; Mountain View Middle School (middle), rated D; Kinnaman Elementary School (elementary), rated D. All sit in Beaverton School District 48j. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 18420 Sw Rosa Rd, Beaverton, OR compare to other homes in Beaverton 97078?

Among the 6,585 homes in Beaverton 97078, it is worth more than 8% of them ($385,433 against a typical $492,489), its price per square foot is higher than 97% of them ($463 against a typical $321), it is bigger than almost none of them (832 ft² against a typical 1,528 ft²), its lot is bigger than 42% of them (0.16 ac against a typical 0.18 ac) and it is newer than 8% of them (1960 against a typical 1977). Measured against all of Washington County, it is worth more than 11% 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 18420 Sw Rosa Rd, Beaverton, OR?

The 2025 property tax bill for 18420 Sw Rosa Rd, Beaverton, OR was $3,189. The county assessed it at $173,810.

More homes on Sw Rosa Rd

Closest homes

More homes in Beaverton 97078

Assigned schools

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