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Single Family ResidenceResidential
$377,781$224 / 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 92How 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

521 S 18TH ST

PHILOMATH, OR 97370
3
Beds
1
Baths
1,688 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.
0.27 ac
Lot SizeThe size of the land the home sits on, from county records.
1956
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
7
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.

Valuation

$378K
$349K low$407K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,796 (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.$183,983 (2025)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$178,624
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$401,617

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyBENTON
Lot (acres)The size of the land the home sits on, from county records.0.27
HeatingThe type of heating system in the home.Heat Pump
CoolingThe type of cooling or air conditioning in the home.Yes
FireplaceWhether the home has a fireplace, and what kind.Yes
PoolWhether the property has a pool, and what kind, such as in-ground.No

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

M
Philomath Middle SchoolB
Middle · Grades 6–8 · 0.2 mi
E
Philomath Elementary SchoolA-
Elementary · Grades 1–5 · 0.2 mi
H
Philomath High SchoolA
High · Grades 9–12 · 0.3 mi

District: Philomath School District 17j

Neighborhood · ZIP 97370These 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.100
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 100.182

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.95%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.24%
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.1.2%
PopulationHow many people live in this area.8,119
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.55 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$86,061
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$104,072
Average tempThe average temperature here across a full year.51°F
Annual precipHow much rain and melted snow falls here in a typical year.73 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

521 S 18th 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 less than 92% of homes in Benton County
  • Costs less per square foot than 94% of homes in Benton County
  • Older than 87% of homes in Philomath 97370

What homes are worth in Philomath 97370

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

This home
$283K$1M

This home is worth more than 14% of homes in Philomath 97370.

How it measures up in Philomath 97370

The dot is this home. The mark in the middle is the typical home in Philomath 97370.

Estimated value$377,781
CheaperTypical $496,143Pricier

Pricier than 14% of homes nearby

Price per ft²$224
CheaperTypical $298Pricier

Pricier than 10% of homes nearby

Living area1,688 ft²
SmallerTypical 1,680 ft²Bigger

Bigger than 51% of homes nearby

Lot size0.27 ac
SmallerTypical 0.33 acBigger

Bigger than 45% of homes nearby

Year built1956
OlderTypical 1988Newer

Newer than 13% of homes nearby

How 521 S 18th St ranks against every home in each area.
MeasureThis homePhilomath 97370Benton County
Estimated valuepricier than$377,78114% of homes8% of homes
Price per ft²pricier than$22410% of homes6% of homes
Living areabigger than1,688 ft²51% of homes46% of homes
Lot sizebigger than0.27 ac45% of homes59% of homes
Year builtnewer than195613% of homes18% of homes

About 521 S 18th St

How much is 521 S 18th St, Philomath, OR worth?

The TopHap Estimate for 521 S 18th St, Philomath, OR is $377,781 as of Sep 24, 2026. The likely range is $348,813 to $406,749. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 521 S 18th St, Philomath, OR last sell?

521 S 18th St, Philomath, OR last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 521 S 18th St, Philomath, OR?

521 S 18th St, Philomath, OR has 3 bedrooms, 1 bathrooms, 1,688 square feet of living space and a 0.27-acre lot.

When was 521 S 18th St, Philomath, OR built?

521 S 18th St, Philomath, OR was built in 1956, making it 70 years old. The building has 1 story.

What schools serve 521 S 18th St, Philomath, OR?

521 S 18th St, Philomath, OR is assigned to Philomath Middle School (middle), rated B; Philomath Elementary School (elementary), rated A-; Philomath High School (high), rated A. All sit in Philomath School District 17j. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 521 S 18th St, Philomath, OR compare to other homes in Philomath 97370?

Among the 3,375 homes in Philomath 97370, it is worth more than 14% of them ($377,781 against a typical $496,143), its price per square foot is higher than 10% of them ($224 against a typical $298), it is bigger than 51% of them (1,688 ft² against a typical 1,680 ft²), its lot is bigger than 45% of them (0.27 ac against a typical 0.33 ac) and it is newer than 13% of them (1956 against a typical 1988). Measured against all of Benton County, it is worth more than 8% 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 521 S 18th St, Philomath, OR?

The 2025 property tax bill for 521 S 18th St, Philomath, OR was $3,796. The county assessed it at $183,983.

More homes on S 18th St

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