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Rural ResidenceResidential
$767,645$137 / 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 53How 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

531 WINDMILL RIDGE DR

HARPER, TX 78631
0
Baths
5,606 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.
6.69 ac
Lot SizeThe size of the land the home sits on, from county records.

Valuation

$768K
$407K low$1.1M high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$1,427 (2026)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$161,550 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$6,350
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$155,200
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$161,500
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$305,730

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.52
15
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
80
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
90
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
39
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
37
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.2 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%

Scores 0–100; higher = greater projected risk.

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Rural Residence
StyleThe architectural style of the home, such as ranch or colonial.Mobile Home
CountyGILLESPIE
Lot (acres)The size of the land the home sits on, from county records.6.69
PoolWhether the property has a pool, and what kind, such as in-ground.No

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

E
Harper Elementary SchoolA+
Elementary · Grades PK–4 · 1.0 mi
H
Harper High SchoolB
High · Grades 9–12 · 1.0 mi
M
Harper Middle SchoolB
Middle · Grades 5–8 · 1.0 mi

District: Harper Independent School District

Neighborhood · ZIP 78631These 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.140
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.83
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.16

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.75%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.20%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.8.8%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.0.8%
PopulationHow many people live in this area.2,672
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.7 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$74,116
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$100,317
Average tempThe average temperature here across a full year.65°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.65%

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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

531 Windmill Ridge 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 more than 93% of homes in Harper 78631
  • Among the lowest price per square foot in Gillespie County
  • Bigger than 98% of homes in Harper 78631
  • Has a bigger lot than 94% of homes in Gillespie County

What homes are worth in Harper 78631

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

This home
$192K$1.1M

This home is worth more than 93% of homes in Harper 78631.

How it measures up in Harper 78631

The dot is this home. The mark in the middle is the typical home in Harper 78631.

Estimated value$767,645
CheaperTypical $377,818Pricier

Pricier than 93% of homes nearby

Price per ft²$137
CheaperTypical $228Pricier

Pricier than 5% of homes nearby

Living area5,606 ft²
SmallerTypical 1,674 ft²Bigger

Bigger than 98% of homes nearby

Lot size6.69 ac
SmallerTypical 1 acBigger

Bigger than 84% of homes nearby

How 531 Windmill Ridge Dr ranks against every home in each area.
MeasureThis homeHarper 78631Gillespie County
Estimated valuepricier than$767,64593% of homes67% of homes
Price per ft²pricier than$1375% of homesalmost no homes
Living areabigger than5,606 ft²98% of homes98% of homes
Lot sizebigger than6.69 ac84% of homes94% of homes

About 531 Windmill Ridge Dr

How much is 531 Windmill Ridge Dr, Harper, TX worth?

The TopHap Estimate for 531 Windmill Ridge Dr, Harper, TX is $767,645 as of Jul 14, 2026. The likely range is $406,756 to $1,128,534. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 531 Windmill Ridge Dr, Harper, TX last sell?

531 Windmill Ridge Dr, Harper, TX last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 531 Windmill Ridge Dr, Harper, TX?

531 Windmill Ridge Dr, Harper, TX has 5,606 square feet of living space and a 6.69-acre lot.

What schools serve 531 Windmill Ridge Dr, Harper, TX?

531 Windmill Ridge Dr, Harper, TX is assigned to Harper Elementary School (elementary), rated A+; Harper High School (high), rated B; Harper Middle School (middle), rated B. All sit in Harper Independent School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 531 Windmill Ridge Dr, Harper, TX compare to other homes in Harper 78631?

Among the 1,608 homes in Harper 78631, it is worth more than 93% of them ($767,645 against a typical $377,818), its price per square foot is higher than 5% of them ($137 against a typical $228), it is bigger than 98% of them (5,606 ft² against a typical 1,674 ft²) and its lot is bigger than 84% of them (6.69 ac against a typical 1 ac). Measured against all of Gillespie County, it is worth more than 67% 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 531 Windmill Ridge Dr, Harper, TX?

The 2026 property tax bill for 531 Windmill Ridge Dr, Harper, TX was $1,427. The county assessed it at $161,550.

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Assigned schools

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