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Single Family ResidenceResidential
$430,027$332 / 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 Sep 24, 2026

18138 SEAMAN ST

SANDY, OR 97055
3
Beds
2 / 1
Baths
1,296 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.
1
StoriesHow many floors the home has above ground.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$430K
$407K low$453K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,505 (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.$204,275 (2025)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$198,326
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$372,190

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyClackamas
Lot (acres)The size of the land the home sits on, from county records.0.17
FoundationWhat the home is built on, such as a concrete slab, a crawl space, or a basement.Concrete
RoofThe main material covering the roof, such as asphalt shingle or tile.Composition Shingle
HeatingThe type of heating system in the home.Forced Air
FireplaceWhether the home has a fireplace, and what kind.Yes
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(1)

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
Sandy Grade SchoolB
Elementary · Grades KG–5 · 0.5 mi
H
Sandy High SchoolB-
High · Grades 9–12 · 1.1 mi
M
Boring Middle SchoolA-
Middle · Grades 6–8 · 6.1 mi

District: Oregon Trail School District 46

Neighborhood · ZIP 97055These 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.103
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 100.154

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.93%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.17%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.6.3%
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.19,279
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.132 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$102,622
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$117,966
Average tempThe average temperature here across a full year.47°F
Annual precipHow much rain and melted snow falls here in a typical year.96 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.48%

Owner Tools

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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

18138 Seaman 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 85% of homes in Clackamas County
  • Costs more per square foot than 78% of homes in Sandy
  • Smaller than 84% of homes in Clackamas County
  • Has a smaller lot than 72% of homes in Clackamas County
  • Older than 76% of homes in Sandy

What homes are worth in Sandy 97055

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

This home
$291K$1.2M

This home is worth more than 23% of homes in Sandy 97055.

How it measures up in Sandy 97055

The dot is this home. The mark in the middle is the typical home in Sandy 97055.

Estimated value$430,027
CheaperTypical $513,909Pricier

Pricier than 23% of homes nearby

Price per ft²$332
CheaperTypical $302Pricier

Pricier than 67% of homes nearby

Living area1,296 ft²
SmallerTypical 1,758 ft²Bigger

Bigger than 18% of homes nearby

Lot size0.17 ac
SmallerTypical 0.32 acBigger

Bigger than 32% of homes nearby

Year built1978
OlderTypical 1992Newer

Newer than 35% of homes nearby

How 18138 Seaman St ranks against every home in each area.
MeasureThis homeSandySandy 97055Clackamas County
Estimated valuepricier than$430,02725% of homes23% of homes15% of homes
Price per ft²pricier than$33278% of homes67% of homes60% of homes
Living areabigger than1,296 ft²17% of homes18% of homes16% of homes
Lot sizebigger than0.17 ac48% of homes32% of homes28% of homes
Year builtnewer than197824% of homes35% of homes47% of homes

About 18138 Seaman St

How much is 18138 Seaman St, Sandy, OR worth?

The TopHap Estimate for 18138 Seaman St, Sandy, OR is $430,027 as of Sep 24, 2026. The likely range is $406,662 to $453,392. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 18138 Seaman St, Sandy, OR last sell?

18138 Seaman St, Sandy, OR last sold on Nov 12, 2014, according to the county's recorded deed.

How big is 18138 Seaman St, Sandy, OR?

18138 Seaman St, Sandy, OR has 3 bedrooms, 2 bathrooms, 1,296 square feet of living space and a 0.17-acre lot.

When was 18138 Seaman St, Sandy, OR built?

18138 Seaman St, Sandy, OR was built in 1978, making it 48 years old. The building has 1 story.

What schools serve 18138 Seaman St, Sandy, OR?

18138 Seaman St, Sandy, OR is assigned to Sandy Grade School (elementary), rated B; Sandy High School (high), rated B-; Boring Middle School (middle), rated A-. All sit in Oregon Trail School District 46. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 18138 Seaman St, Sandy, OR compare to other homes in Sandy 97055?

Among the 7,519 homes in Sandy 97055, it is worth more than 23% of them ($430,027 against a typical $513,909), its price per square foot is higher than 67% of them ($332 against a typical $302), it is bigger than 18% of them (1,296 ft² against a typical 1,758 ft²), its lot is bigger than 32% of them (0.17 ac against a typical 0.32 ac) and it is newer than 35% of them (1978 against a typical 1992). Measured against all of Clackamas County, it is worth more than 15% 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 18138 Seaman St, Sandy, OR?

The 2025 property tax bill for 18138 Seaman St, Sandy, OR was $3,505. The county assessed it at $204,275.

More homes on Seaman St

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