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Single Family ResidenceResidential
$948,635$258 / 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 92How 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 $562,500 on Aug 30, 2021

171 VALLEY MILLS LN

PROSPER, TX 75078
4
Beds
4
Baths
3,674 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.
0.32 ac
Lot SizeThe size of the land the home sits on, from county records.
2021
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
3
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$949K
$869K low$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.$562,500 · Aug 30, 2021

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$14,050 (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.$964,602 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$241,908
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$748,381
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$876,911
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$990,289

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyDENTON
Lot (acres)The size of the land the home sits on, from county records.0.32
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.Pool W/Hot Tub/Spa
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Porch · 236 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
Bryant Elementary SchoolA
Elementary · Grades KG–5 · 0.2 mi
H
Richland High School
High · Grades 9–12 · 0.8 mi
M
Pete Moseley Middle School
Middle · Grades 6–8 · 1.1 mi

District: Prosper Independent School District

Neighborhood · ZIP 75078These 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.49
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.108
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.29

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.41%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.3.2%
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.49,045
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,435 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$166,233
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$200,017
Average tempThe average temperature here across a full year.64°F
Annual precipHow much rain and melted snow falls here in a typical year.40 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.62%

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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

171 Valley Mills Ln 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 Denton County
  • Costs more per square foot than 86% of homes in Denton County
  • Bigger than 89% of homes in Denton County
  • Has a bigger lot than 95% of homes in Windsong Ranch
  • Newer than 86% of homes in Denton County

What homes are worth in Prosper 75078

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

This home
$370K$1.8M

This home is worth more than 76% of homes in Prosper 75078.

How it measures up in Prosper 75078

The dot is this home. The mark in the middle is the typical home in Prosper 75078.

Estimated value$948,635
CheaperTypical $748,336Pricier

Pricier than 76% of homes nearby

Price per ft²$258
CheaperTypical $223Pricier

Pricier than 78% of homes nearby

Living area3,674 ft²
SmallerTypical 3,424 ft²Bigger

Bigger than 62% of homes nearby

Lot size0.32 ac
SmallerTypical 0.22 acBigger

Bigger than 80% of homes nearby

Year built2021
OlderTypical 2018Newer

Newer than 76% of homes nearby

How 171 Valley Mills Ln ranks against every home in each area.
MeasureThis homeWindsong RanchProsper 75078Denton County
Estimated valuepricier than$948,63573% of homes76% of homes93% of homes
Price per ft²pricier than$25871% of homes78% of homes86% of homes
Living areabigger than3,674 ft²65% of homes62% of homes89% of homes
Lot sizebigger than0.32 ac95% of homes80% of homes85% of homes
Year builtnewer than202159% of homes76% of homes86% of homes

About 171 Valley Mills Ln

How much is 171 Valley Mills Ln, Prosper, TX worth?

The TopHap Estimate for 171 Valley Mills Ln, Prosper, TX is $948,635 as of Sep 24, 2026. The likely range is $869,297 to $1,027,973. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 171 Valley Mills Ln, Prosper, TX last sell?

171 Valley Mills Ln, Prosper, TX last sold on Aug 30, 2021 for $562,500, according to the county's recorded deed.

How big is 171 Valley Mills Ln, Prosper, TX?

171 Valley Mills Ln, Prosper, TX has 4 bedrooms, 4 bathrooms, 3,674 square feet of living space and a 0.32-acre lot.

When was 171 Valley Mills Ln, Prosper, TX built?

171 Valley Mills Ln, Prosper, TX was built in 2021, making it 5 years old. The building has 2 stories.

What schools serve 171 Valley Mills Ln, Prosper, TX?

171 Valley Mills Ln, Prosper, TX is assigned to Bryant Elementary School (elementary), rated A; Richland High School (high); Pete Moseley Middle School (middle). All sit in Prosper Independent School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 171 Valley Mills Ln, Prosper, TX compare to other homes in Prosper 75078?

Among the 19,498 homes in Prosper 75078, it is worth more than 76% of them ($948,635 against a typical $748,336), its price per square foot is higher than 78% of them ($258 against a typical $223), it is bigger than 62% of them (3,674 ft² against a typical 3,424 ft²), its lot is bigger than 80% of them (0.32 ac against a typical 0.22 ac) and it is newer than 76% of them (2021 against a typical 2018). Measured against all of Denton County, it is worth more than 93% 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 171 Valley Mills Ln, Prosper, TX?

The 2025 property tax bill for 171 Valley Mills Ln, Prosper, TX was $14,050. The county assessed it at $964,602.

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