Skip to content
Skip to content
TopHapOpen in map
Single Family ResidenceResidential
$560,551$236 / 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 Aug 30, 2026
Last sold for $460,000 on Jul 5, 2023

18320 PORTLAND AVE

GLADSTONE, OR 97027
3
Beds
3
Baths
2,373 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.
0.22 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.

Valuation

$561K
$528K low$593K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$460,000 · Jul 5, 2023

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$6,011 (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.$298,340 (2025)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$289,651
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$544,956

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.0.22
RoofThe main material covering the roof, such as asphalt shingle or tile.Composition Shingle
HeatingThe type of heating system in the home.Electric
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(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.

H
Gladstone High SchoolB
High · Grades 9–12 · 0.3 mi
E
John Wetten Elementary SchoolB-
Elementary · Grades 1–5 · 0.7 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

Do you own this home?
Claim this home

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

18320 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 more than 73% of homes in Gladstone 97027
  • Costs less per square foot than 89% of homes in Clackamas County
  • Bigger than 77% of homes in Gladstone 97027
  • Has a bigger lot than 76% of homes in Gladstone 97027
  • Older than 77% 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
$312K$704K

This home is worth more than 73% 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$560,551
CheaperTypical $501,061Pricier

Pricier than 73% of homes nearby

Price per ft²$236
CheaperTypical $279Pricier

Pricier than 21% of homes nearby

Living area2,373 ft²
SmallerTypical 1,833 ft²Bigger

Bigger than 77% of homes nearby

Lot size0.22 ac
SmallerTypical 0.17 acBigger

Bigger than 76% of homes nearby

Year built1965
OlderTypical 1971Newer

Newer than 38% of homes nearby

How 18320 Portland Ave ranks against every home in each area.
MeasureThis homeGladstone 97027Clackamas County
Estimated valuepricier than$560,55173% of homes40% of homes
Price per ft²pricier than$23621% of homes11% of homes
Living areabigger than2,373 ft²77% of homes65% of homes
Lot sizebigger than0.22 ac76% of homes45% of homes
Year builtnewer than196538% of homes23% of homes

About 18320 Portland Ave

How much is 18320 Portland Ave, Gladstone, OR worth?

The TopHap Estimate for 18320 Portland Ave, Gladstone, OR is $560,551 as of Aug 30, 2026. The likely range is $528,170 to $592,932. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 18320 Portland Ave, Gladstone, OR last sell?

18320 Portland Ave, Gladstone, OR last sold on Jul 5, 2023 for $460,000, according to the county's recorded deed.

How big is 18320 Portland Ave, Gladstone, OR?

18320 Portland Ave, Gladstone, OR has 3 bedrooms, 3 bathrooms, 2,373 square feet of living space and a 0.22-acre lot.

When was 18320 Portland Ave, Gladstone, OR built?

18320 Portland Ave, Gladstone, OR was built in 1965, making it 61 years old. The building has 1 story.

What schools serve 18320 Portland Ave, Gladstone, OR?

18320 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 18320 Portland Ave, Gladstone, OR compare to other homes in Gladstone 97027?

Among the 3,768 homes in Gladstone 97027, it is worth more than 73% of them ($560,551 against a typical $501,061), its price per square foot is higher than 21% of them ($236 against a typical $279), it is bigger than 77% of them (2,373 ft² against a typical 1,833 ft²), its lot is bigger than 76% of them (0.22 ac against a typical 0.17 ac) and it is newer than 38% of them (1965 against a typical 1971). Measured against all of Clackamas County, it is worth more than 40% 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 18320 Portland Ave, Gladstone, OR?

The 2025 property tax bill for 18320 Portland Ave, Gladstone, OR was $6,011. The county assessed it at $298,340.

More homes on Portland Ave

Closest homes

More homes in Gladstone 97027

Assigned schools

Explore the area

See this home in context

Open 18320 Portland Ave on TopHap’s interactive map to compare it against every sale nearby, overlay school zones and flood risk, and run a CMA.

Open in map
A flyover of TopHap's photorealistic 3D map, with recorded sale prices pinned to homes
Search any address, city, zip, or county…3D$1.9M$6.25MOpen in map