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Residential (General/Single)Residential
$283,226
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

503 SARA DR

ROUND ROCK, TX 78664
0
Baths
0.3 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.

Valuation

$283K
$261K low$305K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$1,864 (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.$98,403 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$69,500
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$28,903
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$103,572
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$98,403

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Residential (General/Single)
CountyWILLIAMSON
Lot (acres)The size of the land the home sits on, from county records.0.30
PoolWhether the property has a pool, and what kind, such as in-ground.Yes

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

M
Hernandez Middle SchoolD+
Middle · Grades 6–8 · 0.8 mi
E
Robertson Elementary SchoolD+
Elementary · Grades PK–5 · 0.8 mi
H
Stony Point High SchoolC+
High · Grades 9–12 · 1.0 mi

District: Round Rock Independent School District

Neighborhood · ZIP 78664These 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.87
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.13

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.24%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.8.6%
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.72,016
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.4,336 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$88,209
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$105,122
Average tempThe average temperature here across a full year.67°F
Annual precipHow much rain and melted snow falls here in a typical year.35 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.60%

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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

503 Sara 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 87% of homes in Williamson County
  • Has a bigger lot than 85% of homes in Round Rock 78664
  • Older than 75% of homes in Williamson County

What homes are worth in Round Rock 78664

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

This home
$222K$804K

This home is worth more than 24% of homes in Round Rock 78664.

How it measures up in Round Rock 78664

The dot is this home. The mark in the middle is the typical home in Round Rock 78664.

Estimated value$283,226
CheaperTypical $319,096Pricier

Pricier than 24% of homes nearby

Lot size0.3 ac
SmallerTypical 0.18 acBigger

Bigger than 85% of homes nearby

Year built1996
OlderTypical 1998Newer

Newer than 45% of homes nearby

How 503 Sara Dr ranks against every home in each area.
MeasureThis homeRound Rock 78664Williamson County
Estimated valuepricier than$283,22624% of homes13% of homes
Lot sizebigger than0.3 ac85% of homes75% of homes
Year builtnewer than199645% of homes25% of homes

About 503 Sara Dr

How much is 503 Sara Dr, Round Rock, TX worth?

The TopHap Estimate for 503 Sara Dr, Round Rock, TX is $283,226 as of Oct 21, 2026. The likely range is $260,955 to $305,497. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 503 Sara Dr, Round Rock, TX last sell?

503 Sara Dr, Round Rock, TX last sold on Jan 1, 1900, according to the county's recorded deed.

When was 503 Sara Dr, Round Rock, TX built?

503 Sara Dr, Round Rock, TX was built in 1996, making it 30 years old.

What schools serve 503 Sara Dr, Round Rock, TX?

503 Sara Dr, Round Rock, TX is assigned to Hernandez Middle School (middle), rated D+; Robertson Elementary School (elementary), rated D+; Stony Point High School (high), rated C+. All sit in Round Rock Independent School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 503 Sara Dr, Round Rock, TX compare to other homes in Round Rock 78664?

Among the 16,307 homes in Round Rock 78664, it is worth more than 24% of them ($283,226 against a typical $319,096), its lot is bigger than 85% of them (0.3 ac against a typical 0.18 ac) and it is newer than 45% of them (1996 against a typical 1998). Measured against all of Williamson County, it is worth more than 13% 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 503 Sara Dr, Round Rock, TX?

The 2025 property tax bill for 503 Sara Dr, Round Rock, TX was $1,864. The county assessed it at $98,403.

More homes on Sara Dr

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Assigned schools

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