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Single Family ResidenceResidential
$403,534$366 / 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 $337,000 on Dec 9, 2020

18142 SEAMAN ST

SANDY, OR 97055
3
Beds
1
Baths
1,104 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.
0.18 ac
Lot SizeThe size of the land the home sits on, from county records.
1975
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

$404K
$375K low$432K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$337,000 · Dec 9, 2020

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$2,806 (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.$163,577 (2025)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$158,813
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$399,236

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.0.18
RoofThe main material covering the roof, such as asphalt shingle or tile.Composition Shingle
HeatingThe type of heating system in the home.Baseboard
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(2)

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 · 6.0 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%

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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

18142 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 90% of homes in Clackamas County
  • Costs more per square foot than 88% of homes in Sandy
  • Smaller than 92% of homes in Sandy
  • Has a smaller lot than 69% of homes in Clackamas County
  • Older than 81% 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
$275K$1.2M

This home is worth more than 15% 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$403,534
CheaperTypical $516,168Pricier

Pricier than 15% of homes nearby

Price per ft²$366
CheaperTypical $305Pricier

Pricier than 80% of homes nearby

Living area1,104 ft²
SmallerTypical 1,768 ft²Bigger

Bigger than 10% of homes nearby

Lot size0.18 ac
SmallerTypical 0.3 acBigger

Bigger than 37% of homes nearby

Year built1975
OlderTypical 1992Newer

Newer than 29% of homes nearby

How 18142 Seaman St ranks against every home in each area.
MeasureThis homeSandySandy 97055Clackamas County
Estimated valuepricier than$403,53415% of homes15% of homes10% of homes
Price per ft²pricier than$36688% of homes80% of homes73% of homes
Living areabigger than1,104 ft²8% of homes10% of homes9% of homes
Lot sizebigger than0.18 ac54% of homes37% of homes31% of homes
Year builtnewer than197519% of homes29% of homes40% of homes

About 18142 Seaman St

How much is 18142 Seaman St, Sandy, OR worth?

The TopHap Estimate for 18142 Seaman St, Sandy, OR is $403,534 as of Aug 30, 2026. The likely range is $375,130 to $431,938. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 18142 Seaman St, Sandy, OR last sell?

18142 Seaman St, Sandy, OR last sold on Dec 9, 2020 for $337,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 18142 Seaman St, Sandy, OR?

18142 Seaman St, Sandy, OR has 3 bedrooms, 1 bathrooms, 1,104 square feet of living space and a 0.18-acre lot.

When was 18142 Seaman St, Sandy, OR built?

18142 Seaman St, Sandy, OR was built in 1975, making it 51 years old. The building has 1 story.

What schools serve 18142 Seaman St, Sandy, OR?

18142 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 18142 Seaman St, Sandy, OR compare to other homes in Sandy 97055?

Among the 7,518 homes in Sandy 97055, it is worth more than 15% of them ($403,534 against a typical $516,168), its price per square foot is higher than 80% of them ($366 against a typical $305), it is bigger than 10% of them (1,104 ft² against a typical 1,768 ft²), its lot is bigger than 37% of them (0.18 ac against a typical 0.3 ac) and it is newer than 29% of them (1975 against a typical 1992). Measured against all of Clackamas County, it is worth more than 10% 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 18142 Seaman St, Sandy, OR?

The 2025 property tax bill for 18142 Seaman St, Sandy, OR was $2,806. The county assessed it at $163,577.

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