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Single Family ResidenceResidential
$434,954$214 / 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 96How 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

321 CALSTONE DR

ALLEN, TX 75013
4
Beds
2
Baths
2,030 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.
0.13 ac
Lot SizeThe size of the land the home sits on, from county records.
1996
Year BuiltThe year the home was originally built, according to county records.
1
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

$435K
$420K low$450K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$7,396 (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.$438,783 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$125,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$313,783
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$427,075
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$438,783

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.2005
Lot (acres)The size of the land the home sits on, from county records.0.13
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.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 · 149 ft²

Transaction History(4)

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
Beverly Elementary SchoolA+
Elementary · Grades KG–5 · 0.6 mi
M
Hendrick Middle SchoolB
Middle · Grades 6–8 · 1.4 mi
H
Plano Senior High SchoolB+
High · Grades 11–12 · 4.8 mi

District: Plano Independent School District

Neighborhood · ZIP 75013These 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.34
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.98
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.29

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.96%
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.3.7%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.5%
PopulationHow many people live in this area.56,610
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.3,879 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$143,397
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$164,284
Average tempThe average temperature here across a full year.65°F
Annual precipHow much rain and melted snow falls here in a typical year.40 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

321 Calstone 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 89% of homes in Allen 75013
  • Costs more per square foot than 71% of homes in Custer Hill
  • Smaller than 86% of homes in Allen 75013
  • Has a smaller lot than 81% of homes in Collin County
  • Older than 89% of homes in Custer Hill

What homes are worth in Allen 75013

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

This home
$336K$1.4M

This home is worth more than 11% of homes in Allen 75013.

How it measures up in Allen 75013

The dot is this home. The mark in the middle is the typical home in Allen 75013.

Estimated value$434,954
CheaperTypical $696,869Pricier

Pricier than 11% of homes nearby

Price per ft²$214
CheaperTypical $225Pricier

Pricier than 35% of homes nearby

Living area2,030 ft²
SmallerTypical 3,177 ft²Bigger

Bigger than 14% of homes nearby

Lot size0.13 ac
SmallerTypical 0.18 acBigger

Bigger than 31% of homes nearby

Year built1996
OlderTypical 2007Newer

Newer than 13% of homes nearby

How 321 Calstone Dr ranks against every home in each area.
MeasureThis homeCuster HillAllen 75013Collin County
Estimated valuepricier than$434,95436% of homes11% of homes36% of homes
Price per ft²pricier than$21471% of homes35% of homes57% of homes
Living areabigger than2,030 ft²34% of homes14% of homes32% of homes
Lot sizebigger than0.13 ac63% of homes31% of homes19% of homes
Year builtnewer than199611% of homes13% of homes31% of homes

About 321 Calstone Dr

How much is 321 Calstone Dr, Allen, TX worth?

The TopHap Estimate for 321 Calstone Dr, Allen, TX is $434,954 as of Sep 24, 2026. The likely range is $419,529 to $450,379. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 321 Calstone Dr, Allen, TX last sell?

321 Calstone Dr, Allen, TX last sold on Jun 16, 2026, according to the county's recorded deed.

How big is 321 Calstone Dr, Allen, TX?

321 Calstone Dr, Allen, TX has 4 bedrooms, 2 bathrooms, 2,030 square feet of living space and a 0.13-acre lot.

When was 321 Calstone Dr, Allen, TX built?

321 Calstone Dr, Allen, TX was built in 1996, making it 30 years old. The building has 1 story.

What schools serve 321 Calstone Dr, Allen, TX?

321 Calstone Dr, Allen, TX is assigned to Beverly Elementary School (elementary), rated A+; Hendrick Middle School (middle), rated B; Plano Senior High School (high), rated B+. All sit in Plano Independent School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 321 Calstone Dr, Allen, TX compare to other homes in Allen 75013?

Among the 15,431 homes in Allen 75013, it is worth more than 11% of them ($434,954 against a typical $696,869), its price per square foot is higher than 35% of them ($214 against a typical $225), it is bigger than 14% of them (2,030 ft² against a typical 3,177 ft²), its lot is bigger than 31% of them (0.13 ac against a typical 0.18 ac) and it is newer than 13% of them (1996 against a typical 2007). Measured against all of Collin County, it is worth more than 36% 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 321 Calstone Dr, Allen, TX?

The 2025 property tax bill for 321 Calstone Dr, Allen, TX was $7,396. The county assessed it at $438,783.

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