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Single Family ResidenceResidential
$355,659$287 / 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
Last sold for $291,000 on Aug 5, 2019

3320 PORTLOCK DR

DALLAS, TX 75234
3
Beds
2.5
Baths
1,240 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.
0.2 ac
Lot SizeThe size of the land the home sits on, from county records.
1960
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
1
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$356K
$338K low$373K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$291,000 · Aug 5, 2019

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,905 (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.$373,000 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$200,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$173,000
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$373,000
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$373,000

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyDALLAS
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.1980
Lot (acres)The size of the land the home sits on, from county records.0.20
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
RoofThe main material covering the roof, such as asphalt shingle or tile.Composition Shingle
HeatingThe type of heating system in the home.Central
CoolingThe type of cooling or air conditioning in the home.Central
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

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
Chapel Hill Preparatory SchoolC-
Elementary · Grades EE–6 · 0.7 mi
M
Thomas C. Marsh Preparatory AcademyD-
Middle · Grades 7–8 · 1.5 mi
H
W.T. White High SchoolD-
High · Grades 9–12 · 2.2 mi

District: Dallas Independent School District

Neighborhood · ZIP 75234These 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.80
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.107
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.22

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.92%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.24%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.9.4%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.4%
PopulationHow many people live in this area.31,254
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.2,897 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$81,959
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$109,854
Average tempThe average temperature here across a full year.66°F
Annual precipHow much rain and melted snow falls here in a typical year.38 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.62%

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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

3320 Portlock Dr 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 65% of homes in Johnston Park
  • Costs more per square foot than 92% of homes in Dallas 75234
  • Smaller than 78% of homes in Dallas County
  • Newer than 96% of homes in Johnston Park

What homes are worth in Dallas 75234

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

This home
$139K$1.1M

This home is worth more than 47% of homes in Dallas 75234.

How it measures up in Dallas 75234

The dot is this home. The mark in the middle is the typical home in Dallas 75234.

Estimated value$355,659
CheaperTypical $366,574Pricier

Pricier than 47% of homes nearby

Price per ft²$287
CheaperTypical $234Pricier

Pricier than 92% of homes nearby

Living area1,240 ft²
SmallerTypical 1,690 ft²Bigger

Bigger than 25% of homes nearby

Lot size0.2 ac
SmallerTypical 0.21 acBigger

Bigger than 39% of homes nearby

Year built1960
OlderTypical 1963Newer

Newer than 38% of homes nearby

How 3320 Portlock Dr ranks against every home in each area.
MeasureThis homeJohnston ParkDallas 75234Dallas County
Estimated valuepricier than$355,65965% of homes47% of homes61% of homes
Price per ft²pricier than$28788% of homes92% of homes84% of homes
Living areabigger than1,240 ft²51% of homes25% of homes22% of homes
Lot sizebigger than0.2 ac51% of homes39% of homes53% of homes
Year builtnewer than196096% of homes38% of homes27% of homes

About 3320 Portlock Dr

How much is 3320 Portlock Dr, Dallas, TX worth?

The TopHap Estimate for 3320 Portlock Dr, Dallas, TX is $355,659 as of Sep 24, 2026. The likely range is $337,917 to $373,401. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 3320 Portlock Dr, Dallas, TX last sell?

3320 Portlock Dr, Dallas, TX last sold on Aug 5, 2019 for $291,000, according to the county's recorded deed.

How big is 3320 Portlock Dr, Dallas, TX?

3320 Portlock Dr, Dallas, TX has 3 bedrooms, 2.5 bathrooms, 1,240 square feet of living space and a 0.20-acre lot.

When was 3320 Portlock Dr, Dallas, TX built?

3320 Portlock Dr, Dallas, TX was built in 1960, making it 66 years old. The building has 1 story.

What schools serve 3320 Portlock Dr, Dallas, TX?

3320 Portlock Dr, Dallas, TX is assigned to Chapel Hill Preparatory School (elementary), rated C-; Thomas C. Marsh Preparatory Academy (middle), rated D-; W.T. White High School (high), rated D-. All sit in Dallas Independent School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 3320 Portlock Dr, Dallas, TX compare to other homes in Dallas 75234?

Among the 9,581 homes in Dallas 75234, it is worth more than 47% of them ($355,659 against a typical $366,574), its price per square foot is higher than 92% of them ($287 against a typical $234), it is bigger than 25% of them (1,240 ft² against a typical 1,690 ft²), its lot is bigger than 39% of them (0.2 ac against a typical 0.21 ac) and it is newer than 38% of them (1960 against a typical 1963). Measured against all of Dallas County, it is worth more than 61% 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 3320 Portlock Dr, Dallas, TX?

The 2025 property tax bill for 3320 Portlock Dr, Dallas, TX was $4,905. The county assessed it at $373,000.

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