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Single Family ResidenceResidential
$1,205,212$241 / 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 91How 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 $673,785 on Sep 27, 2011

6640 NW DIAMOND PL

CORVALLIS, OR 97330
4
Beds
3.5
Baths
5,002 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.
1.28 ac
Lot SizeThe size of the land the home sits on, from county records.
1994
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
10
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.
5
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$1.2M
$1.1M low$1.3M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$673,785 · Sep 27, 2011

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$12,652 (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.$829,625 (2025)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$805,461
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$1,358,260

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyBENTON
HeatingThe type of heating system in the home.Yes
CoolingThe type of cooling or air conditioning in the home.Yes
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

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.

E
Mountain View Elementary SchoolA-
Elementary · Grades KG–5 · 1.3 mi
H
Crescent Valley High SchoolB
High · Grades 9–12 · 1.6 mi
M
Cheldelin Middle SchoolB+
Middle · Grades 6–8 · 2.8 mi

District: Corvallis School District 509j

Neighborhood · ZIP 97330These 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.104
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.111
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.169

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.94%
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.22%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.0%
PopulationHow many people live in this area.45,225
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.590 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$73,613
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$92,518
Average tempThe average temperature here across a full year.52°F
Annual precipHow much rain and melted snow falls here in a typical year.54 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.47%

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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

6640 Nw Diamond 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.

  • Among the most valuable homes in Benton County
  • Costs less per square foot than 93% of homes in Corvallis 97330
  • Bigger than 98% of homes in Benton County
  • Has a bigger lot than 90% of homes in Corvallis 97330
  • Newer than 81% of homes in Corvallis 97330

What homes are worth in Corvallis 97330

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

This home
$330K$1.1M

This home is worth more than 98% of homes in Corvallis 97330.

How it measures up in Corvallis 97330

The dot is this home. The mark in the middle is the typical home in Corvallis 97330.

Estimated value$1,205,212
CheaperTypical $571,991Pricier

Pricier than 98% of homes nearby

Price per ft²$241
CheaperTypical $317Pricier

Pricier than 7% of homes nearby

Living area5,002 ft²
SmallerTypical 1,774 ft²Bigger

Bigger than 97% of homes nearby

Lot size1.28 ac
SmallerTypical 0.22 acBigger

Bigger than 90% of homes nearby

Year built1994
OlderTypical 1973Newer

Newer than 81% of homes nearby

How 6640 Nw Diamond Pl ranks against every home in each area.
MeasureThis homeCorvallis 97330Benton County
Estimated valuepricier than$1,205,21298% of homesalmost all homes
Price per ft²pricier than$2417% of homes11% of homes
Living areabigger than5,002 ft²97% of homes98% of homes
Lot sizebigger than1.28 ac90% of homes85% of homes
Year builtnewer than199481% of homes67% of homes

About 6640 Nw Diamond Pl

How much is 6640 Nw Diamond Pl, Corvallis, OR worth?

The TopHap Estimate for 6640 Nw Diamond Pl, Corvallis, OR is $1,205,212 as of Aug 30, 2026. The likely range is $1,093,703 to $1,316,721. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 6640 Nw Diamond Pl, Corvallis, OR last sell?

6640 Nw Diamond Pl, Corvallis, OR last sold on Sep 27, 2011 for $673,785, according to the county's recorded deed.

How big is 6640 Nw Diamond Pl, Corvallis, OR?

6640 Nw Diamond Pl, Corvallis, OR has 4 bedrooms, 3.5 bathrooms and 5,002 square feet of living space.

When was 6640 Nw Diamond Pl, Corvallis, OR built?

6640 Nw Diamond Pl, Corvallis, OR was built in 1994, making it 32 years old. The building has 2 stories.

What schools serve 6640 Nw Diamond Pl, Corvallis, OR?

6640 Nw Diamond Pl, Corvallis, OR is assigned to Mountain View Elementary School (elementary), rated A-; Crescent Valley High School (high), rated B; Cheldelin Middle School (middle), rated B+. All sit in Corvallis School District 509j. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 6640 Nw Diamond Pl, Corvallis, OR compare to other homes in Corvallis 97330?

Among the 12,721 homes in Corvallis 97330, it is worth more than 98% of them ($1,205,212 against a typical $571,991), its price per square foot is higher than 7% of them ($241 against a typical $317), it is bigger than 97% of them (5,002 ft² against a typical 1,774 ft²), its lot is bigger than 90% of them (1.28 ac against a typical 0.22 ac) and it is newer than 81% of them (1994 against a typical 1973). Measured against all of Benton County, it is worth more than almost all 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 6640 Nw Diamond Pl, Corvallis, OR?

The 2025 property tax bill for 6640 Nw Diamond Pl, Corvallis, OR was $12,652. The county assessed it at $829,625.

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