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Single Family ResidenceResidential
$422,265$267 / 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 Oct 21, 2026
Last sold for $154,700 on May 30, 2007

1821 ARMSTRONG DR

FLOWER MOUND, TX 75028
3
Beds
2
Baths
1,582 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.
0.11 ac
Lot SizeThe size of the land the home sits on, from county records.
1992
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

$422K
$398K low$446K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$154,700 · May 30, 2007

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$1,162 (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.$371,914 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$100,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$271,914
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$357,240
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$371,914

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyDENTON
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.2000
Lot (acres)The size of the land the home sits on, from county records.0.12
FoundationWhat the home is built on, such as a concrete slab, a crawl space, or a basement.Mat/Raft Foundation (Slab)
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.Porch · 42 ft²

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.

M
Forestwood Middle SchoolA+
Middle · Grades 6–8 · 0.3 mi
E
Donald Elementary SchoolA
Elementary · Grades KG–5 · 0.5 mi
H
Flower Mound High SchoolA+
High · Grades 9–12 · 1.7 mi

District: Lewisville Independent School District

Neighborhood · ZIP 75028These 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.8
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 100.28

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.42%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.3.7%
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.53,932
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.3,597 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$145,018
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$164,700
Average tempThe average temperature here across a full year.65°F
Annual precipHow much rain and melted snow falls here in a typical year.37 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

1821 Armstrong 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 less than 81% of homes in Flower Mound 75028
  • Costs more per square foot than 89% of homes in Denton County
  • Smaller than 91% of homes in Flower Mound 75028
  • Has a smaller lot than 93% of homes in Flower Mound 75028
  • Older than 76% of homes in Denton County

What homes are worth in Flower Mound 75028

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

This home
$352K$1.3M

This home is worth more than 19% of homes in Flower Mound 75028.

How it measures up in Flower Mound 75028

The dot is this home. The mark in the middle is the typical home in Flower Mound 75028.

Estimated value$422,265
CheaperTypical $555,491Pricier

Pricier than 19% of homes nearby

Price per ft²$267
CheaperTypical $234Pricier

Pricier than 83% of homes nearby

Living area1,582 ft²
SmallerTypical 2,406 ft²Bigger

Bigger than 9% of homes nearby

Lot size0.11 ac
SmallerTypical 0.2 acBigger

Bigger than 7% of homes nearby

Year built1992
OlderTypical 1995Newer

Newer than 36% of homes nearby

How 1821 Armstrong Dr ranks against every home in each area.
MeasureThis homeFlower Mound 75028Denton County
Estimated valuepricier than$422,26519% of homes46% of homes
Price per ft²pricier than$26783% of homes89% of homes
Living areabigger than1,582 ft²9% of homes17% of homes
Lot sizebigger than0.11 ac7% of homes8% of homes
Year builtnewer than199236% of homes24% of homes

About 1821 Armstrong Dr

How much is 1821 Armstrong Dr, Flower Mound, TX worth?

The TopHap Estimate for 1821 Armstrong Dr, Flower Mound, TX is $422,265 as of Oct 21, 2026. The likely range is $398,181 to $446,349. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 1821 Armstrong Dr, Flower Mound, TX last sell?

1821 Armstrong Dr, Flower Mound, TX last sold on May 30, 2007 for $154,700, according to the county's recorded deed.

How big is 1821 Armstrong Dr, Flower Mound, TX?

1821 Armstrong Dr, Flower Mound, TX has 3 bedrooms, 2 bathrooms, 1,582 square feet of living space and a 0.12-acre lot.

When was 1821 Armstrong Dr, Flower Mound, TX built?

1821 Armstrong Dr, Flower Mound, TX was built in 1992, making it 34 years old. The building has 1 story.

What schools serve 1821 Armstrong Dr, Flower Mound, TX?

1821 Armstrong Dr, Flower Mound, TX is assigned to Forestwood Middle School (middle), rated A+; Donald Elementary School (elementary), rated A; Flower Mound High School (high), rated A+. All sit in Lewisville Independent School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 1821 Armstrong Dr, Flower Mound, TX compare to other homes in Flower Mound 75028?

Among the 15,615 homes in Flower Mound 75028, it is worth more than 19% of them ($422,265 against a typical $555,491), its price per square foot is higher than 83% of them ($267 against a typical $234), it is bigger than 9% of them (1,582 ft² against a typical 2,406 ft²), its lot is bigger than 7% of them (0.11 ac against a typical 0.2 ac) and it is newer than 36% of them (1992 against a typical 1995). Measured against all of Denton County, it is worth more than 46% 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 1821 Armstrong Dr, Flower Mound, TX?

The 2025 property tax bill for 1821 Armstrong Dr, Flower Mound, TX was $1,162. The county assessed it at $371,914.

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