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Single Family ResidenceResidential
$9,999,999$1,169 / 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 72How 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

4009 ARMSTRONG AVE

DALLAS, TX 75205
6
Beds
6.5
Baths
8,557 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.
1.62 ac
Lot SizeThe size of the land the home sits on, from county records.
2023
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
5
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$10M
$10M low$10M high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$206,258 (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.$15,079,150 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$12,582,750
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$2,496,400
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$13,153,630
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$15,079,150

Climate Risk

Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.155 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.51%
FEMA Flood ZoneFEMA's flood zone for this address. Zones starting with A or V are high risk, and lenders usually require flood insurance there.1 percent flood zone

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
CountyDALLAS
ConstructionThe main material the home's frame and walls are built from.Concrete
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
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.Wet bar

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

E
John S. Armstrong Elementary SchoolA+
Elementary · Grades KG–4 · 0.9 mi
M
Highland Park Middle SchoolA+
Middle · Grades 7–8 · 1.4 mi
H
Highland Park High SchoolA
High · Grades 9–12 · 1.8 mi

District: Highland Park Independent School District

Neighborhood · ZIP 75205These 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.88
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.105
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.24

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.90%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.44%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.5.9%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.3%
PopulationHow many people live in this area.26,689
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.6,068 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$188,459
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$271,091
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

4009 Armstrong 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.

  • Among the most valuable homes in Highland Park
  • Among the highest price per square foot in Dallas County
  • Among the largest homes in Dallas County
  • Among the largest lots in Dallas 75205
  • Among the newest homes in Highland Park

What homes are worth in Dallas 75205

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

This home
$258K$10M

This home is worth more than almost all homes in Dallas 75205.

How it measures up in Dallas 75205

The dot is this home. The mark in the middle is the typical home in Dallas 75205.

Estimated value$9,999,999
CheaperTypical $2,786,408Pricier

Pricier than almost all homes nearby

Price per ft²$1169
CheaperTypical $767Pricier

Pricier than 89% of homes nearby

Living area8,557 ft²
SmallerTypical 3,517 ft²Bigger

Bigger than 95% of homes nearby

Lot size1.62 ac
SmallerTypical 0.21 acBigger

Bigger than almost all homes nearby

Year built2023
OlderTypical 1985Newer

Newer than 98% of homes nearby

How 4009 Armstrong Ave ranks against every home in each area.
MeasureThis homeHighland ParkDallas 75205Dallas County
Estimated valuepricier than$9,999,999almost all homesalmost all homesalmost all homes
Price per ft²pricier than$116981% of homes89% of homesalmost all homes
Living areabigger than8,557 ft²92% of homes95% of homesalmost all homes
Lot sizebigger than1.62 ac93% of homesalmost all homes94% of homes
Year builtnewer than2023almost all homes98% of homes98% of homes

About 4009 Armstrong Ave

How much is 4009 Armstrong Ave, Dallas, TX worth?

The TopHap Estimate for 4009 Armstrong Ave, Dallas, TX is $9,999,999 as of Sep 24, 2026. The likely range is $9,999,999 to $9,999,999. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 4009 Armstrong Ave, Dallas, TX last sell?

4009 Armstrong Ave, Dallas, TX last sold on May 21, 2021, according to the county's recorded deed.

How big is 4009 Armstrong Ave, Dallas, TX?

4009 Armstrong Ave, Dallas, TX has 6 bedrooms, 6.5 bathrooms and 8,557 square feet of living space.

When was 4009 Armstrong Ave, Dallas, TX built?

4009 Armstrong Ave, Dallas, TX was built in 2023, making it 3 years old. The building has 2 stories.

What schools serve 4009 Armstrong Ave, Dallas, TX?

4009 Armstrong Ave, Dallas, TX is assigned to John S. Armstrong Elementary School (elementary), rated A+; Highland Park Middle School (middle), rated A+; Highland Park High School (high), rated A. All sit in Highland Park Independent School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 4009 Armstrong Ave, Dallas, TX compare to other homes in Dallas 75205?

Among the 7,343 homes in Dallas 75205, it is worth more than almost all of them ($9,999,999 against a typical $2,786,408), its price per square foot is higher than 89% of them ($1169 against a typical $767), it is bigger than 95% of them (8,557 ft² against a typical 3,517 ft²), its lot is bigger than almost all of them (1.62 ac against a typical 0.21 ac) and it is newer than 98% of them (2023 against a typical 1985). Measured against all of Dallas County, it is worth more than almost all 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 4009 Armstrong Ave, Dallas, TX?

The 2025 property tax bill for 4009 Armstrong Ave, Dallas, TX was $206,258. The county assessed it at $15,079,150.

More homes on Armstrong Ave

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More homes in Dallas 75205

Assigned schools

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