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Single Family ResidenceResidential
$194,000$142 / 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 89How 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
Last sold for $57,135 on Jul 18, 2013

646 SAINT THOMAS DR

BROWNSVILLE, TX 78521
3
Beds
2
Baths
1,370 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.
0.11 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.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$194K
$173K low$215K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$57,135 · Jul 18, 2013

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,058 (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.$188,000 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$44,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$144,000
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$195,748
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$188,000

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.41
18
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
1
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
97
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
43
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
47
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.36 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.26%

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
CountyCAMERON
Lot (acres)The size of the land the home sits on, from county records.0.12
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
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 · 174 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.

E
Judge Reynaldo G. Garza at Southmost Elementary SchoolC
Elementary · Grades KG–5 · 0.1 mi
M
Raul A. Besteiro, Jr. Middle SchoolC
Middle · Grades 6–8 · 1.2 mi
H
Lopez Early College High SchoolC-
High · Grades 9–12 · 1.8 mi

District: Brownsville Independent School District

Neighborhood · ZIP 78521These 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.97
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.86
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.7

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.92%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.11%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.25%
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.91,986
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.623 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$39,363
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$52,725
Average tempThe average temperature here across a full year.74°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

646 Saint Thomas 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.

  • Has a smaller lot than 93% of homes in Brownsville 78521
  • Newer than 74% of homes in Brownsville 78521

What homes are worth in Brownsville 78521

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

This home
$75K$459K

This home is worth more than 57% of homes in Brownsville 78521.

How it measures up in Brownsville 78521

The dot is this home. The mark in the middle is the typical home in Brownsville 78521.

Estimated value$194,000
CheaperTypical $181,308Pricier

Pricier than 57% of homes nearby

Price per ft²$142
CheaperTypical $134Pricier

Pricier than 59% of homes nearby

Living area1,370 ft²
SmallerTypical 1,272 ft²Bigger

Bigger than 57% of homes nearby

Lot size0.11 ac
SmallerTypical 0.14 acBigger

Bigger than 7% of homes nearby

Year built1999
OlderTypical 1987Newer

Newer than 74% of homes nearby

How 646 Saint Thomas Dr ranks against every home in each area.
MeasureThis homeBrownsville 78521Cameron County
Estimated valuepricier than$194,00057% of homes48% of homes
Price per ft²pricier than$14259% of homes52% of homes
Living areabigger than1,370 ft²57% of homes51% of homes
Lot sizebigger than0.11 ac7% of homes12% of homes
Year builtnewer than199974% of homes65% of homes

About 646 Saint Thomas Dr

How much is 646 Saint Thomas Dr, Brownsville, TX worth?

The TopHap Estimate for 646 Saint Thomas Dr, Brownsville, TX is $194,000 as of Sep 24, 2026. The likely range is $172,654 to $215,346. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 646 Saint Thomas Dr, Brownsville, TX last sell?

646 Saint Thomas Dr, Brownsville, TX last sold on Jul 18, 2013 for $57,135, according to the county's recorded deed.

How big is 646 Saint Thomas Dr, Brownsville, TX?

646 Saint Thomas Dr, Brownsville, TX has 3 bedrooms, 2 bathrooms, 1,370 square feet of living space and a 0.12-acre lot.

When was 646 Saint Thomas Dr, Brownsville, TX built?

646 Saint Thomas Dr, Brownsville, TX was built in 1999, making it 27 years old. The building has 1 story.

What schools serve 646 Saint Thomas Dr, Brownsville, TX?

646 Saint Thomas Dr, Brownsville, TX is assigned to Judge Reynaldo G. Garza at Southmost Elementary School (elementary), rated C; Raul A. Besteiro, Jr. Middle School (middle), rated C; Lopez Early College High School (high), rated C-. All sit in Brownsville Independent School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 646 Saint Thomas Dr, Brownsville, TX compare to other homes in Brownsville 78521?

Among the 24,837 homes in Brownsville 78521, it is worth more than 57% of them ($194,000 against a typical $181,308), its price per square foot is higher than 59% of them ($142 against a typical $134), it is bigger than 57% of them (1,370 ft² against a typical 1,272 ft²), its lot is bigger than 7% of them (0.11 ac against a typical 0.14 ac) and it is newer than 74% of them (1999 against a typical 1987). Measured against all of Cameron County, it is worth more than 48% 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 646 Saint Thomas Dr, Brownsville, TX?

The 2025 property tax bill for 646 Saint Thomas Dr, Brownsville, TX was $4,058. The county assessed it at $188,000.

More homes on Saint Thomas Dr

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