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Single Family ResidenceResidential
$188,662$120 / 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 87How 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

643 KOPPLOW

SAN ANTONIO, TX 78221
3
Beds
2
Baths
1,577 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.
0.16 ac
Lot SizeThe size of the land the home sits on, from county records.
1958
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.

Valuation

$189K
$164K low$213K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,677 (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.$183,940 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$45,930
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$138,010
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$182,410
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$183,940

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
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.1983
Lot (acres)The size of the land the home sits on, from county records.0.16
RoofThe main material covering the roof, such as asphalt shingle or tile.Asphalt
HeatingThe type of heating system in the home.Floor/Wall Furnace
CoolingThe type of cooling or air conditioning in the home.Yes
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 · 330 ft²Porch · 260 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.

M
Kingsborough Middle SchoolD+
Middle · Grades 6–8 · 0.6 mi
E
Schulze Elementary SchoolC-
Elementary · Grades PK–5 · 0.7 mi
H
McCollum High SchoolD-
High · Grades 9–12 · 1.3 mi

District: Harlandale Independent School District

Neighborhood · ZIP 78221These 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.92
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.84
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.28

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.8.1%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.18%
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.42,681
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,108 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$54,613
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$61,936
Average tempThe average temperature here across a full year.70°F
Annual precipHow much rain and melted snow falls here in a typical year.31 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

643 Kopplow 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 76% of homes in Bexar County
  • Costs less per square foot than 86% of homes in Bexar County
  • Bigger than 67% of homes in San Antonio 78221
  • Has a smaller lot than 69% of homes in San Antonio 78221
  • Older than 83% of homes in Bexar County

What homes are worth in San Antonio 78221

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

This home
$98K$349K

This home is worth more than 55% of homes in San Antonio 78221.

How it measures up in San Antonio 78221

The dot is this home. The mark in the middle is the typical home in San Antonio 78221.

Estimated value$188,662
CheaperTypical $180,345Pricier

Pricier than 55% of homes nearby

Price per ft²$120
CheaperTypical $140Pricier

Pricier than 23% of homes nearby

Living area1,577 ft²
SmallerTypical 1,310 ft²Bigger

Bigger than 67% of homes nearby

Lot size0.16 ac
SmallerTypical 0.16 acBigger

Bigger than 31% of homes nearby

Year built1958
OlderTypical 1968Newer

Newer than 36% of homes nearby

How 643 Kopplow ranks against every home in each area.
MeasureThis homeSan Antonio 78221Bexar County
Estimated valuepricier than$188,66255% of homes24% of homes
Price per ft²pricier than$12023% of homes14% of homes
Living areabigger than1,577 ft²67% of homes43% of homes
Lot sizebigger than0.16 ac31% of homes41% of homes
Year builtnewer than195836% of homes17% of homes

About 643 Kopplow

How much is 643 Kopplow, San Antonio, TX worth?

The TopHap Estimate for 643 Kopplow, San Antonio, TX is $188,662 as of Sep 24, 2026. The likely range is $164,092 to $213,232. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 643 Kopplow, San Antonio, TX last sell?

643 Kopplow, San Antonio, TX last sold on Jun 5, 2013, according to the county's recorded deed.

How big is 643 Kopplow, San Antonio, TX?

643 Kopplow, San Antonio, TX has 3 bedrooms, 2 bathrooms, 1,577 square feet of living space and a 0.16-acre lot.

When was 643 Kopplow, San Antonio, TX built?

643 Kopplow, San Antonio, TX was built in 1958, making it 68 years old. It is a contemporary home. The building has 1 story.

What schools serve 643 Kopplow, San Antonio, TX?

643 Kopplow, San Antonio, TX is assigned to Kingsborough Middle School (middle), rated D+; Schulze Elementary School (elementary), rated C-; McCollum High School (high), rated D-. All sit in Harlandale Independent School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 643 Kopplow, San Antonio, TX compare to other homes in San Antonio 78221?

Among the 13,903 homes in San Antonio 78221, it is worth more than 55% of them ($188,662 against a typical $180,345), its price per square foot is higher than 23% of them ($120 against a typical $140), it is bigger than 67% of them (1,577 ft² against a typical 1,310 ft²), its lot is bigger than 31% of them (0.16 ac against a typical 0.16 ac) and it is newer than 36% of them (1958 against a typical 1968). Measured against all of Bexar County, it is worth more than 24% 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 643 Kopplow, San Antonio, TX?

The 2025 property tax bill for 643 Kopplow, San Antonio, TX was $4,677. The county assessed it at $183,940.

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