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Single Family ResidenceResidential
$743,857$244 / 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 94How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Aug 30, 2026
Last sold for $829,920 on Jun 19, 2025

850 LONG VALLEY CT

PROSPER, TX 75078
4
Beds
3
Baths
3,047 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.
0.24 ac
Lot SizeThe size of the land the home sits on, from county records.
2008
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
8
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$744K
$698K low$789K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$829,920 · Jun 19, 2025

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$5,667 (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.$640,632 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$190,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$492,913
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$582,393
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$682,913

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyCOLLIN
Lot (acres)The size of the land the home sits on, from county records.0.24
ConstructionThe main material the home's frame and walls are built from.Wood (Unspecified)
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 · 244 ft²

Transaction History(6)

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
Jana Thomson Elementary School
Elementary · Grades KG–5 · 0.9 mi
M
Reynolds Middle SchoolA
Middle · Grades 6–8 · 0.9 mi
H
Prosper High SchoolB+
High · Grades 9–12 · 0.9 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

850 Long Valley Ct 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 80% of homes in Collin County
  • Costs more per square foot than 80% of homes in Collin County
  • Bigger than 69% of homes in Collin County
  • Has a bigger lot than 68% of homes in Collin County
  • Older than 85% of homes in Prosper 75078

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
$359K$1.9M

This home is worth more than 44% 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$743,857
CheaperTypical $774,986Pricier

Pricier than 44% of homes nearby

Price per ft²$244
CheaperTypical $235Pricier

Pricier than 60% of homes nearby

Living area3,047 ft²
SmallerTypical 3,424 ft²Bigger

Bigger than 35% of homes nearby

Lot size0.24 ac
SmallerTypical 0.22 acBigger

Bigger than 59% of homes nearby

Year built2008
OlderTypical 2018Newer

Newer than 15% of homes nearby

How 850 Long Valley Ct ranks against every home in each area.
MeasureThis homeProsper 75078Collin County
Estimated valuepricier than$743,85744% of homes80% of homes
Price per ft²pricier than$24460% of homes80% of homes
Living areabigger than3,047 ft²35% of homes69% of homes
Lot sizebigger than0.24 ac59% of homes68% of homes
Year builtnewer than200815% of homes61% of homes

About 850 Long Valley Ct

How much is 850 Long Valley Ct, Prosper, TX worth?

The TopHap Estimate for 850 Long Valley Ct, Prosper, TX is $743,857 as of Aug 30, 2026. The likely range is $698,369 to $789,345. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 850 Long Valley Ct, Prosper, TX last sell?

850 Long Valley Ct, Prosper, TX last sold on Jun 19, 2025 for $829,920, according to the county's recorded deed.

How big is 850 Long Valley Ct, Prosper, TX?

850 Long Valley Ct, Prosper, TX has 4 bedrooms, 3 bathrooms, 3,047 square feet of living space and a 0.24-acre lot.

When was 850 Long Valley Ct, Prosper, TX built?

850 Long Valley Ct, Prosper, TX was built in 2008, making it 18 years old. The building has 2 stories.

What schools serve 850 Long Valley Ct, Prosper, TX?

850 Long Valley Ct, Prosper, TX is assigned to Jana Thomson Elementary School (elementary); Reynolds Middle School (middle), rated A; Prosper High School (high), rated B+. All sit in Prosper Independent School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 850 Long Valley Ct, Prosper, TX compare to other homes in Prosper 75078?

Among the 18,725 homes in Prosper 75078, it is worth more than 44% of them ($743,857 against a typical $774,986), its price per square foot is higher than 60% of them ($244 against a typical $235), it is bigger than 35% of them (3,047 ft² against a typical 3,424 ft²), its lot is bigger than 59% of them (0.24 ac against a typical 0.22 ac) and it is newer than 15% of them (2008 against a typical 2018). Measured against all of Collin County, it is worth more than 80% 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 850 Long Valley Ct, Prosper, TX?

The 2025 property tax bill for 850 Long Valley Ct, Prosper, TX was $5,667. The county assessed it at $640,632.

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