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Single Family ResidenceResidential
$483,962$340 / 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
Last sold for $505,000 on Jul 31, 2025

20603 SW MARTINAZZI AVE

TUALATIN, OR 97062
3
Beds
2
Baths
1,422 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.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$484K
$446K low$522K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$505,000 · Jul 31, 2025

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,851 (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.$266,900 (2026)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$259,130
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$481,820

Climate Risk

Overall riskThe average of the five hazard scores below, on a 0 to 100 scale. Higher means greater projected risk over the coming decades.38
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
18
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
41
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
96
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
38
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.

Scores 0–100; higher = greater projected risk.

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyWASHINGTON
Effective Year BuiltAn adjusted build year that accounts for condition and major remodels. A big renovation can make a home count as newer than it is.1981
Lot (acres)The size of the land the home sits on, from county records.0.17
ConstructionThe main material the home's frame and walls are built from.Wood (Unspecified)
RoofThe main material covering the roof, such as asphalt shingle or tile.Composition Shingle
HeatingThe type of heating system in the home.Forced Air With Air Conditioning
CoolingThe type of cooling or air conditioning in the home.Central
FireplaceWhether the home has a fireplace, and what kind.Yes
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Attached
PoolWhether the property has a pool, and what kind, such as in-ground.No
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Deck · 170 ft²Patio · 373 ft²

Transaction History(5)

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
Edward Byrom Elementary SchoolA-
Elementary · Grades KG–5 · 0.8 mi
H
Tualatin High SchoolC-
High · Grades 9–12 · 1.0 mi
M
Hazelbrook Middle SchoolC
Middle · Grades 6–8 · 2.1 mi

District: Tigard-Tualatin School District

Neighborhood · ZIP 97062These 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.107
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.108
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.183

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.97%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.28%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.8.8%
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.29,385
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.2,046 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$105,053
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$129,327
Average tempThe average temperature here across a full year.53°F
Annual precipHow much rain and melted snow falls here in a typical year.44 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

20603 Sw Martinazzi 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 84% of homes in Tualatin 97062
  • Costs more per square foot than 77% of homes in Tualatin 97062
  • Smaller than 81% of homes in Tualatin 97062
  • Has a smaller lot than 69% of homes in Martinazzi Woods
  • Older than 79% of homes in Tualatin 97062

What homes are worth in Tualatin 97062

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

This home
$266K$1.6M

This home is worth more than 16% of homes in Tualatin 97062.

How it measures up in Tualatin 97062

The dot is this home. The mark in the middle is the typical home in Tualatin 97062.

Estimated value$483,962
CheaperTypical $618,631Pricier

Pricier than 16% of homes nearby

Price per ft²$340
CheaperTypical $293Pricier

Pricier than 77% of homes nearby

Living area1,422 ft²
SmallerTypical 2,070 ft²Bigger

Bigger than 19% of homes nearby

Lot size0.17 ac
SmallerTypical 0.18 acBigger

Bigger than 40% of homes nearby

Year built1978
OlderTypical 1990Newer

Newer than 21% of homes nearby

How 20603 Sw Martinazzi Ave ranks against every home in each area.
MeasureThis homeMartinazzi WoodsTualatin 97062Washington County
Estimated valuepricier than$483,96232% of homes16% of homes31% of homes
Price per ft²pricier than$34062% of homes77% of homes75% of homes
Living areabigger than1,422 ft²42% of homes19% of homes25% of homes
Lot sizebigger than0.17 ac31% of homes40% of homes51% of homes
Year builtnewer than197846% of homes21% of homes33% of homes

About 20603 Sw Martinazzi Ave

How much is 20603 Sw Martinazzi Ave, Tualatin, OR worth?

The TopHap Estimate for 20603 Sw Martinazzi Ave, Tualatin, OR is $483,962 as of Sep 24, 2026. The likely range is $445,581 to $522,343. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 20603 Sw Martinazzi Ave, Tualatin, OR last sell?

20603 Sw Martinazzi Ave, Tualatin, OR last sold on Jul 31, 2025 for $505,000, according to the county's recorded deed. TopHap holds 5 recorded sales for this parcel.

How big is 20603 Sw Martinazzi Ave, Tualatin, OR?

20603 Sw Martinazzi Ave, Tualatin, OR has 3 bedrooms, 2 bathrooms, 1,422 square feet of living space and a 0.17-acre lot.

When was 20603 Sw Martinazzi Ave, Tualatin, OR built?

20603 Sw Martinazzi Ave, Tualatin, OR was built in 1978, making it 48 years old.

What schools serve 20603 Sw Martinazzi Ave, Tualatin, OR?

20603 Sw Martinazzi Ave, Tualatin, OR is assigned to Edward Byrom Elementary School (elementary), rated A-; Tualatin High School (high), rated C-; Hazelbrook Middle School (middle), rated C. All sit in Tigard-Tualatin School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 20603 Sw Martinazzi Ave, Tualatin, OR compare to other homes in Tualatin 97062?

Among the 7,846 homes in Tualatin 97062, it is worth more than 16% of them ($483,962 against a typical $618,631), its price per square foot is higher than 77% of them ($340 against a typical $293), it is bigger than 19% of them (1,422 ft² against a typical 2,070 ft²), its lot is bigger than 40% of them (0.17 ac against a typical 0.18 ac) and it is newer than 21% of them (1978 against a typical 1990). Measured against all of Washington County, it is worth more than 31% 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 20603 Sw Martinazzi Ave, Tualatin, OR?

The 2025 property tax bill for 20603 Sw Martinazzi Ave, Tualatin, OR was $4,851. The county assessed it at $266,900.

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