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Single Family ResidenceResidential
$391,968$348 / 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 94How 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

18330 PORTLAND AVE

GLADSTONE, OR 97027
3
Beds
2 / 1
Baths
1,126 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.
1965
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

$392K
$370K low$414K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,259 (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.$211,382 (2025)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$205,226
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$424,591

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyClackamas
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.Heat Pump
CoolingThe type of cooling or air conditioning in the home.Central
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.

H
Gladstone High SchoolB
High · Grades 9–12 · 0.2 mi
E
John Wetten Elementary SchoolB-
Elementary · Grades 1–5 · 0.6 mi
M
Kraxberger Middle SchoolB+
Middle · Grades 6–8 · 0.7 mi

District: Gladstone School District 115

Neighborhood · ZIP 97027These 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.109
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.104
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.176

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.23%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.13%
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.12,430
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.4,729 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$87,903
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$105,311
Average tempThe average temperature here across a full year.54°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%

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

18330 Portland 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 less than 91% of homes in Clackamas County
  • Costs more per square foot than 80% of homes in Gladstone 97027
  • Smaller than 91% of homes in Clackamas County
  • Has a smaller lot than 75% of homes in Clackamas County
  • Older than 76% of homes in Clackamas County

What homes are worth in Gladstone 97027

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

This home
$316K$725K

This home is worth more than 11% of homes in Gladstone 97027.

How it measures up in Gladstone 97027

The dot is this home. The mark in the middle is the typical home in Gladstone 97027.

Estimated value$391,968
CheaperTypical $500,517Pricier

Pricier than 11% of homes nearby

Price per ft²$348
CheaperTypical $278Pricier

Pricier than 80% of homes nearby

Living area1,126 ft²
SmallerTypical 1,833 ft²Bigger

Bigger than 13% of homes nearby

Lot size0.16 ac
SmallerTypical 0.17 acBigger

Bigger than 33% of homes nearby

Year built1965
OlderTypical 1971Newer

Newer than 37% of homes nearby

How 18330 Portland Ave ranks against every home in each area.
MeasureThis homeGladstone 97027Clackamas County
Estimated valuepricier than$391,96811% of homes9% of homes
Price per ft²pricier than$34880% of homes67% of homes
Living areabigger than1,126 ft²13% of homes9% of homes
Lot sizebigger than0.16 ac33% of homes25% of homes
Year builtnewer than196537% of homes24% of homes

About 18330 Portland Ave

How much is 18330 Portland Ave, Gladstone, OR worth?

The TopHap Estimate for 18330 Portland Ave, Gladstone, OR is $391,968 as of Sep 24, 2026. The likely range is $370,052 to $413,884. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

How big is 18330 Portland Ave, Gladstone, OR?

18330 Portland Ave, Gladstone, OR has 3 bedrooms, 2 bathrooms and 1,126 square feet of living space.

When was 18330 Portland Ave, Gladstone, OR built?

18330 Portland Ave, Gladstone, OR was built in 1965, making it 61 years old. The building has 1 story.

What schools serve 18330 Portland Ave, Gladstone, OR?

18330 Portland Ave, Gladstone, OR is assigned to Gladstone High School (high), rated B; John Wetten Elementary School (elementary), rated B-; Kraxberger Middle School (middle), rated B+. All sit in Gladstone School District 115. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 18330 Portland Ave, Gladstone, OR compare to other homes in Gladstone 97027?

Among the 3,768 homes in Gladstone 97027, it is worth more than 11% of them ($391,968 against a typical $500,517), its price per square foot is higher than 80% of them ($348 against a typical $278), it is bigger than 13% of them (1,126 ft² against a typical 1,833 ft²), its lot is bigger than 33% of them (0.16 ac against a typical 0.17 ac) and it is newer than 37% of them (1965 against a typical 1971). Measured against all of Clackamas County, it is worth more than 9% 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 18330 Portland Ave, Gladstone, OR?

The 2025 property tax bill for 18330 Portland Ave, Gladstone, OR was $4,259. The county assessed it at $211,382.

More homes on Portland Ave

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More homes in Gladstone 97027

Assigned schools

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