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Single Family ResidenceResidential
$891,940$162 / 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 77How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Jul 14, 2026
Last sold for $533,100 on May 29, 2018

135 ROUNDTOP HL

CASTROVILLE, TX 78009
2
Baths
5,498 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.
0.54 ac
Lot SizeThe size of the land the home sits on, from county records.
2017
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
4
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$892K
$690K low$1.1M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$533,100 · May 29, 2018

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$17,246 (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.$944,200 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$79,460
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$864,740
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$929,469
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$944,200

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.71
40
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
73
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.
44
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
100
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.8 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.1 percent flood zone

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
CountyMEDINA
Lot (acres)The size of the land the home sits on, from county records.0.54
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.Yes
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Porch · 498 ft²

Transaction History(1)

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
Creek View High School
High · Grades 9–12 · 1.3 mi
M
Loma Alta Middle SchoolB-
Middle · Grades 6–8 · 1.4 mi
E
Castroville Elementary SchoolA
Elementary · Grades PK–5 · 5.5 mi

District: Medina Valley Independent School District

Neighborhood · ZIP 78009These 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.73
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.81
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.94%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.17%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.8.2%
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.9,496
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.134 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$92,826
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$108,482
Average tempThe average temperature here across a full year.69°F
Annual precipHow much rain and melted snow falls here in a typical year.30 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

135 Roundtop Hl 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 98% of homes in Castroville 78009
  • Costs less per square foot than 93% of homes in Castroville 78009
  • Among the largest homes in Castroville 78009
  • Newer than 78% of homes in Medina County

What homes are worth in Castroville 78009

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

This home
$161K$874K

This home is worth more than 98% of homes in Castroville 78009.

How it measures up in Castroville 78009

The dot is this home. The mark in the middle is the typical home in Castroville 78009.

Estimated value$891,940
CheaperTypical $459,371Pricier

Pricier than 98% of homes nearby

Price per ft²$162
CheaperTypical $202Pricier

Pricier than 7% of homes nearby

Living area5,498 ft²
SmallerTypical 1,978 ft²Bigger

Bigger than almost all homes nearby

Lot size0.54 ac
SmallerTypical 0.69 acBigger

Bigger than 36% of homes nearby

Year built2017
OlderTypical 2003Newer

Newer than 75% of homes nearby

How 135 Roundtop Hl ranks against every home in each area.
MeasureThis homeCastroville 78009Medina County
Estimated valuepricier than$891,94098% of homes98% of homes
Price per ft²pricier than$1627% of homes34% of homes
Living areabigger than5,498 ft²almost all homesalmost all homes
Lot sizebigger than0.54 ac36% of homes43% of homes
Year builtnewer than201775% of homes78% of homes

About 135 Roundtop Hl

How much is 135 Roundtop Hl, Castroville, TX worth?

The TopHap Estimate for 135 Roundtop Hl, Castroville, TX is $891,940 as of Jul 14, 2026. The likely range is $689,924 to $1,093,956. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 135 Roundtop Hl, Castroville, TX last sell?

135 Roundtop Hl, Castroville, TX last sold on May 29, 2018 for $533,100, according to the county's recorded deed.

How big is 135 Roundtop Hl, Castroville, TX?

135 Roundtop Hl, Castroville, TX has 2 bathrooms, 5,498 square feet of living space and a 0.54-acre lot.

When was 135 Roundtop Hl, Castroville, TX built?

135 Roundtop Hl, Castroville, TX was built in 2017, making it 9 years old. The building has 2 stories.

What schools serve 135 Roundtop Hl, Castroville, TX?

135 Roundtop Hl, Castroville, TX is assigned to Creek View High School (high); Loma Alta Middle School (middle), rated B-; Castroville Elementary School (elementary), rated A. All sit in Medina Valley Independent School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 135 Roundtop Hl, Castroville, TX compare to other homes in Castroville 78009?

Among the 3,885 homes in Castroville 78009, it is worth more than 98% of them ($891,940 against a typical $459,371), its price per square foot is higher than 7% of them ($162 against a typical $202), it is bigger than almost all of them (5,498 ft² against a typical 1,978 ft²), its lot is bigger than 36% of them (0.54 ac against a typical 0.69 ac) and it is newer than 75% of them (2017 against a typical 2003). Measured against all of Medina County, it is worth more than 98% 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 135 Roundtop Hl, Castroville, TX?

The 2025 property tax bill for 135 Roundtop Hl, Castroville, TX was $17,246. The county assessed it at $944,200.

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