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Single Family ResidenceResidential
$414,441$199 / 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 97How 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

20 HARPER DR

ALLEN, TX 75002
3
Beds
1
Baths
2,086 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.
1991
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
8
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$414K
$403K low$425K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$5,581 (2024)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$396,568 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$130,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$266,568
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$399,785
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$396,568

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyCollin
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
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
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 · 324 ft²

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.

M
Ford Middle SchoolA
Middle · Grades 7–8 · 0.4 mi
E
Bolin Elementary SchoolA
Elementary · Grades KG–6 · 0.9 mi
H
Allen High SchoolA
High · Grades 9–12 · 1.6 mi

District: Allen Independent School District

Neighborhood · ZIP 75002These 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.37
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.101
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.26

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.34%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.5.1%
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.88,326
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.2,239 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$121,302
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$148,629
Average tempThe average temperature here across a full year.65°F
Annual precipHow much rain and melted snow falls here in a typical year.41 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

20 Harper 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 70% of homes in Allen 75002
  • Costs less per square foot than 70% of homes in Allen 75002
  • Smaller than 65% of homes in Collin County
  • Older than 77% of homes in Collin County

What homes are worth in Allen 75002

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

This home
$268K$1.8M

This home is worth more than 30% of homes in Allen 75002.

How it measures up in Allen 75002

The dot is this home. The mark in the middle is the typical home in Allen 75002.

Estimated value$414,441
CheaperTypical $482,984Pricier

Pricier than 30% of homes nearby

Price per ft²$199
CheaperTypical $216Pricier

Pricier than 30% of homes nearby

Living area2,086 ft²
SmallerTypical 2,365 ft²Bigger

Bigger than 39% of homes nearby

Year built1991
OlderTypical 1999Newer

Newer than 34% of homes nearby

How 20 Harper Dr ranks against every home in each area.
MeasureThis homeHeritage ParkAllen 75002Collin County
Estimated valuepricier than$414,44137% of homes30% of homes31% of homes
Price per ft²pricier than$19964% of homes30% of homes39% of homes
Living areabigger than2,086 ft²37% of homes39% of homes35% of homes
Year builtnewer than199124% of homes34% of homes23% of homes

About 20 Harper Dr

How much is 20 Harper Dr, Allen, TX worth?

The TopHap Estimate for 20 Harper Dr, Allen, TX is $414,441 as of Sep 24, 2026. The likely range is $403,477 to $425,405. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 20 Harper Dr, Allen, TX last sell?

20 Harper Dr, Allen, TX last sold on Aug 28, 2013, according to the county's recorded deed.

How big is 20 Harper Dr, Allen, TX?

20 Harper Dr, Allen, TX has 3 bedrooms, 1 bathrooms and 2,086 square feet of living space.

When was 20 Harper Dr, Allen, TX built?

20 Harper Dr, Allen, TX was built in 1991, making it 35 years old. The building has 2 stories.

What schools serve 20 Harper Dr, Allen, TX?

20 Harper Dr, Allen, TX is assigned to Ford Middle School (middle), rated A; Bolin Elementary School (elementary), rated A; Allen High School (high), rated A. All sit in Allen Independent School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 20 Harper Dr, Allen, TX compare to other homes in Allen 75002?

Among the 22,425 homes in Allen 75002, it is worth more than 30% of them ($414,441 against a typical $482,984), its price per square foot is higher than 30% of them ($199 against a typical $216), it is bigger than 39% of them (2,086 ft² against a typical 2,365 ft²) and it is newer than 34% of them (1991 against a typical 1999). Measured against all of Collin 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 20 Harper Dr, Allen, TX?

The 2024 property tax bill for 20 Harper Dr, Allen, TX was $5,581. The county assessed it at $396,568.

More homes on Harper Dr

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Assigned schools

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