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Single Family ResidenceResidential
$338,450$156 / 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 92How 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 $280,000 on Jun 18, 2018

13431 BLACKSTONE

UNIVERSAL CITY, TX 78148
3
Beds
2
Baths
2,170 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.
0.49 ac
Lot SizeThe size of the land the home sits on, from county records.
1999
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
6
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

$338K
$310K low$366K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$280,000 · Jun 18, 2018

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$7,309 (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.$324,000 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$92,790
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$231,210
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$324,367
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$324,000

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.6 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%
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.minimal

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
StyleThe architectural style of the home, such as ranch or colonial.Contemporary
CountyBEXAR
Lot (acres)The size of the land the home sits on, from county records.0.49
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.Asphalt
HeatingThe type of heating system in the home.Forced Air With Air Conditioning
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
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Patio · 444 ft²Porch · 92 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.

E
Fine Arts Academy at OlympiaB
Elementary · Grades PK–5 · 0.7 mi
M
Kitty Hawk Middle SchoolC
Middle · Grades 6–8 · 1.4 mi
H
Veterans Memorial High SchoolD
High · Grades 9–12 · 3.6 mi

District: Judson Independent School District

Neighborhood · ZIP 78148These 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.87
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.83
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.93%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.23%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.12%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.2%
PopulationHow many people live in this area.22,123
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.2,413 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$75,045
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$94,499
Average tempThe average temperature here across a full year.69°F
Annual precipHow much rain and melted snow falls here in a typical year.34 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.60%

Owner Tools

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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

13431 Blackstone 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 80% of homes in Universal City 78148
  • Bigger than 68% of homes in Bexar County
  • Has a bigger lot than 97% of homes in Universal City 78148
  • Newer than 73% of homes in Universal City 78148

What homes are worth in Universal City 78148

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

This home
$167K$491K

This home is worth more than 80% of homes in Universal City 78148.

How it measures up in Universal City 78148

The dot is this home. The mark in the middle is the typical home in Universal City 78148.

Estimated value$338,450
CheaperTypical $266,488Pricier

Pricier than 80% of homes nearby

Price per ft²$156
CheaperTypical $149Pricier

Pricier than 62% of homes nearby

Living area2,170 ft²
SmallerTypical 1,887 ft²Bigger

Bigger than 66% of homes nearby

Lot size0.49 ac
SmallerTypical 0.2 acBigger

Bigger than 97% of homes nearby

Year built1999
OlderTypical 1982Newer

Newer than 73% of homes nearby

How 13431 Blackstone ranks against every home in each area.
MeasureThis homeUniversal City 78148Bexar County
Estimated valuepricier than$338,45080% of homes72% of homes
Price per ft²pricier than$15662% of homes54% of homes
Living areabigger than2,170 ft²66% of homes68% of homes
Lot sizebigger than0.49 ac97% of homes90% of homes
Year builtnewer than199973% of homes58% of homes

About 13431 Blackstone

How much is 13431 Blackstone, Universal City, TX worth?

The TopHap Estimate for 13431 Blackstone, Universal City, TX is $338,450 as of Oct 21, 2026. The likely range is $310,498 to $366,402. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 13431 Blackstone, Universal City, TX last sell?

13431 Blackstone, Universal City, TX last sold on Jun 18, 2018 for $280,000, according to the county's recorded deed.

How big is 13431 Blackstone, Universal City, TX?

13431 Blackstone, Universal City, TX has 3 bedrooms, 2 bathrooms, 2,170 square feet of living space and a 0.49-acre lot.

When was 13431 Blackstone, Universal City, TX built?

13431 Blackstone, Universal City, TX was built in 1999, making it 27 years old. It is a contemporary home. The building has 1 story.

What schools serve 13431 Blackstone, Universal City, TX?

13431 Blackstone, Universal City, TX is assigned to Fine Arts Academy at Olympia (elementary), rated B; Kitty Hawk Middle School (middle), rated C; Veterans Memorial High School (high), rated D. All sit in Judson Independent School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 13431 Blackstone, Universal City, TX compare to other homes in Universal City 78148?

Among the 5,921 homes in Universal City 78148, it is worth more than 80% of them ($338,450 against a typical $266,488), its price per square foot is higher than 62% of them ($156 against a typical $149), it is bigger than 66% of them (2,170 ft² against a typical 1,887 ft²), its lot is bigger than 97% of them (0.49 ac against a typical 0.2 ac) and it is newer than 73% of them (1999 against a typical 1982). Measured against all of Bexar County, it is worth more than 72% 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 13431 Blackstone, Universal City, TX?

The 2025 property tax bill for 13431 Blackstone, Universal City, TX was $7,309. The county assessed it at $324,000.

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