Skip to content
Skip to content
TopHapOpen in map
Single Family ResidenceResidential
$464,230$318 / 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 96How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Oct 21, 2026

665 S 20TH AVE

CORNELIUS, OR 97113
3
Beds
2
Baths
1,460 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.
0.17 ac
Lot SizeThe size of the land the home sits on, from county records.
1978
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

$464K
$443K low$485K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,827 (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.$214,340 (2026)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$208,100
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$443,720

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.39
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
23
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.
95
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.0.17
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.Forced Air With Air Conditioning
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 · 420 ft²Patio · 120 ft²

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

E
Echo Shaw Elementary SchoolD
Elementary · Grades PK–5 · 0.7 mi
M
Neil Armstrong Middle SchoolD
Middle · Grades 7–8 · 1.3 mi
H
Forest Grove High SchoolC
High · Grades 9–12 · 3.8 mi

District: Forest Grove School District 15

Neighborhood · ZIP 97113These 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.79
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.105
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.190

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.11%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.8.3%
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.13,563
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.377 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$84,187
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$120,523
Average tempThe average temperature here across a full year.52°F
Annual precipHow much rain and melted snow falls here in a typical year.43 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

665 S 20th Ave 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 73% of homes in Washington County
  • Costs more per square foot than 66% of homes in Cornelius 97113
  • Smaller than 71% of homes in Washington County
  • Older than 71% of homes in Cornelius 97113

What homes are worth in Cornelius 97113

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

This home
$342K$784K

This home is worth more than 53% of homes in Cornelius 97113.

How it measures up in Cornelius 97113

The dot is this home. The mark in the middle is the typical home in Cornelius 97113.

Estimated value$464,230
CheaperTypical $457,242Pricier

Pricier than 53% of homes nearby

Price per ft²$318
CheaperTypical $295Pricier

Pricier than 66% of homes nearby

Living area1,460 ft²
SmallerTypical 1,548 ft²Bigger

Bigger than 43% of homes nearby

Lot size0.17 ac
SmallerTypical 0.16 acBigger

Bigger than 55% of homes nearby

Year built1978
OlderTypical 1995Newer

Newer than 29% of homes nearby

How 665 S 20th Ave ranks against every home in each area.
MeasureThis homeCornelius 97113Washington County
Estimated valuepricier than$464,23053% of homes27% of homes
Price per ft²pricier than$31866% of homes63% of homes
Living areabigger than1,460 ft²43% of homes29% of homes
Lot sizebigger than0.17 ac55% of homes51% of homes
Year builtnewer than197829% of homes33% of homes

About 665 S 20th Ave

How much is 665 S 20th Ave, Cornelius, OR worth?

The TopHap Estimate for 665 S 20th Ave, Cornelius, OR is $464,230 as of Oct 21, 2026. The likely range is $443,471 to $484,989. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 665 S 20th Ave, Cornelius, OR last sell?

665 S 20th Ave, Cornelius, OR last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 665 S 20th Ave, Cornelius, OR?

665 S 20th Ave, Cornelius, OR has 3 bedrooms, 2 bathrooms, 1,460 square feet of living space and a 0.17-acre lot.

When was 665 S 20th Ave, Cornelius, OR built?

665 S 20th Ave, Cornelius, OR was built in 1978, making it 48 years old.

What schools serve 665 S 20th Ave, Cornelius, OR?

665 S 20th Ave, Cornelius, OR is assigned to Echo Shaw Elementary School (elementary), rated D; Neil Armstrong Middle School (middle), rated D; Forest Grove High School (high), rated C. All sit in Forest Grove School District 15. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 665 S 20th Ave, Cornelius, OR compare to other homes in Cornelius 97113?

Among the 4,725 homes in Cornelius 97113, it is worth more than 53% of them ($464,230 against a typical $457,242), its price per square foot is higher than 66% of them ($318 against a typical $295), it is bigger than 43% of them (1,460 ft² against a typical 1,548 ft²), its lot is bigger than 55% of them (0.17 ac against a typical 0.16 ac) and it is newer than 29% of them (1978 against a typical 1995). Measured against all of Washington County, it is worth more than 27% 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 665 S 20th Ave, Cornelius, OR?

The 2025 property tax bill for 665 S 20th Ave, Cornelius, OR was $3,827. The county assessed it at $214,340.

More homes on S 20th Ave

Closest homes

More homes in Cornelius 97113

Assigned schools

Explore the area

See this home in context

Open 665 S 20th Ave 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