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Single Family ResidenceResidential
$270,785$271 / 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 79How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Aug 30, 2026

813 ASTER ST

KATY, TX 77493
0
Baths
1,000 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.
0.24 ac
Lot SizeThe size of the land the home sits on, from county records.
1972
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
1
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$271K
$215K low$327K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$2,694 (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.$217,276 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$154,670
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$62,606
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$237,067
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$217,276

Climate Risk

Overall riskThe average of the five hazard scores below, on a 0 to 100 scale. Higher means greater projected risk over the coming decades.50
21
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
37
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
99
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
55
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
38
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.17 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.6%
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.Ranch
CountyWALLER
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.1992
Lot (acres)The size of the land the home sits on, from county records.0.24
PoolWhether the property has a pool, and what kind, such as in-ground.No

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.

H
Katy High SchoolA-
High · Grades 9–12 · 0.2 mi
E
Katy Elementary SchoolA+
Elementary · Grades PK–5 · 0.7 mi
M
Katy Junior High SchoolA-
Middle · Grades 6–8 · 1.8 mi

District: Katy Independent School District

Neighborhood · ZIP 77493These 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.53
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.90
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.17

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.94%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.27%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.9.7%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.6%
PopulationHow many people live in this area.51,177
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.815 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$106,215
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$133,279
Average tempThe average temperature here across a full year.69°F
Annual precipHow much rain and melted snow falls here in a typical year.46 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.58%

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

813 Aster St 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 91% of homes in Katy 77493
  • Costs more per square foot than 98% of homes in Katy 77493
  • Among the smallest homes in Katy 77493
  • Has a bigger lot than 85% of homes in Katy 77493
  • Older than 98% of homes in Katy 77493

What homes are worth in Katy 77493

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

This home
$234K$1.1M

This home is worth more than 9% of homes in Katy 77493.

How it measures up in Katy 77493

The dot is this home. The mark in the middle is the typical home in Katy 77493.

Estimated value$270,785
CheaperTypical $365,948Pricier

Pricier than 9% of homes nearby

Price per ft²$271
CheaperTypical $168Pricier

Pricier than 98% of homes nearby

Living area1,000 ft²
SmallerTypical 2,275 ft²Bigger

Smaller than almost all homes nearby

Lot size0.24 ac
SmallerTypical 0.15 acBigger

Bigger than 85% of homes nearby

Year built1972
OlderTypical 2020Newer

Newer than 2% of homes nearby

How 813 Aster St ranks against every home in each area.
MeasureThis homeKaty 77493Waller County
Estimated valuepricier than$270,7859% of homes27% of homes
Price per ft²pricier than$27198% of homes89% of homes
Living areabigger than1,000 ft²almost no homes9% of homes
Lot sizebigger than0.24 ac85% of homes40% of homes
Year builtnewer than19722% of homes4% of homes

About 813 Aster St

How much is 813 Aster St, Katy, TX worth?

The TopHap Estimate for 813 Aster St, Katy, TX is $270,785 as of Aug 30, 2026. The likely range is $214,547 to $327,023. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 813 Aster St, Katy, TX last sell?

813 Aster St, Katy, TX last sold on Nov 14, 2024, according to the county's recorded deed.

How big is 813 Aster St, Katy, TX?

813 Aster St, Katy, TX has 1,000 square feet of living space and a 0.24-acre lot.

When was 813 Aster St, Katy, TX built?

813 Aster St, Katy, TX was built in 1972, making it 54 years old. It is a ranch home. The building has 1 story.

What schools serve 813 Aster St, Katy, TX?

813 Aster St, Katy, TX is assigned to Katy High School (high), rated A-; Katy Elementary School (elementary), rated A+; Katy Junior High School (middle), rated A-. All sit in Katy Independent School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 813 Aster St, Katy, TX compare to other homes in Katy 77493?

Among the 34,056 homes in Katy 77493, it is worth more than 9% of them ($270,785 against a typical $365,948), its price per square foot is higher than 98% of them ($271 against a typical $168), it is bigger than almost none of them (1,000 ft² against a typical 2,275 ft²), its lot is bigger than 85% of them (0.24 ac against a typical 0.15 ac) and it is newer than 2% of them (1972 against a typical 2020). These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 813 Aster St, Katy, TX?

The 2025 property tax bill for 813 Aster St, Katy, TX was $2,694. The county assessed it at $217,276.

More homes on Aster St

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Assigned schools

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