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Single Family ResidenceResidential
$650,789$254 / 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 93How 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 $450,000 on Sep 30, 2015

818 N 31ST AVE

CORNELIUS, OR 97113
4
Beds
3
Baths
2,562 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.
2004
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

$651K
$607K low$695K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$450,000 · Sep 30, 2015

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$7,222 (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.$451,770 (2026)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$438,620
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$708,090

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.54
70
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
29
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.
Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.42 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%

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.0.16
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.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 · 60 ft²Patio · 160 ft²Porch · 252 ft²Sprinklers

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.

E
Free Orchards Elementary SchoolD-
Elementary · Grades PK–6 · 0.7 mi
H
Glencoe High SchoolB
High · Grades 9–12 · 2.3 mi
M
Evergreen Middle SchoolD+
Middle · Grades 7–8 · 2.8 mi

District: Hillsboro School District 1j

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%

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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

818 N 31st 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 more than 95% of homes in Cornelius 97113
  • Costs less per square foot than 84% of homes in Washington County
  • Bigger than 92% of homes in Cornelius 97113
  • Newer than 78% of homes in Washington County

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
$334K$784K

This home is worth more than 95% 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$650,789
CheaperTypical $461,977Pricier

Pricier than 95% of homes nearby

Price per ft²$254
CheaperTypical $298Pricier

Pricier than 18% of homes nearby

Living area2,562 ft²
SmallerTypical 1,548 ft²Bigger

Bigger than 92% of homes nearby

Lot size0.16 ac
SmallerTypical 0.16 acBigger

Bigger than 54% of homes nearby

Year built2004
OlderTypical 1995Newer

Newer than 69% of homes nearby

How 818 N 31st Ave ranks against every home in each area.
MeasureThis homeCornelius 97113Washington County
Estimated valuepricier than$650,78995% of homes70% of homes
Price per ft²pricier than$25418% of homes16% of homes
Living areabigger than2,562 ft²92% of homes79% of homes
Lot sizebigger than0.16 ac54% of homes51% of homes
Year builtnewer than200469% of homes78% of homes

About 818 N 31st Ave

How much is 818 N 31st Ave, Cornelius, OR worth?

The TopHap Estimate for 818 N 31st Ave, Cornelius, OR is $650,789 as of Aug 30, 2026. The likely range is $606,925 to $694,653. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 818 N 31st Ave, Cornelius, OR last sell?

818 N 31st Ave, Cornelius, OR last sold on Sep 30, 2015 for $450,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 818 N 31st Ave, Cornelius, OR?

818 N 31st Ave, Cornelius, OR has 4 bedrooms, 3 bathrooms, 2,562 square feet of living space and a 0.16-acre lot.

When was 818 N 31st Ave, Cornelius, OR built?

818 N 31st Ave, Cornelius, OR was built in 2004, making it 22 years old.

What schools serve 818 N 31st Ave, Cornelius, OR?

818 N 31st Ave, Cornelius, OR is assigned to Free Orchards Elementary School (elementary), rated D-; Glencoe High School (high), rated B; Evergreen Middle School (middle), rated D+. All sit in Hillsboro School District 1j. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 818 N 31st Ave, Cornelius, OR compare to other homes in Cornelius 97113?

Among the 4,705 homes in Cornelius 97113, it is worth more than 95% of them ($650,789 against a typical $461,977), its price per square foot is higher than 18% of them ($254 against a typical $298), it is bigger than 92% of them (2,562 ft² against a typical 1,548 ft²), its lot is bigger than 54% of them (0.16 ac against a typical 0.16 ac) and it is newer than 69% of them (2004 against a typical 1995). Measured against all of Washington County, it is worth more than 70% 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 818 N 31st Ave, Cornelius, OR?

The 2025 property tax bill for 818 N 31st Ave, Cornelius, OR was $7,222. The county assessed it at $451,770.

More homes on N 31st Ave

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