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Single Family ResidenceResidential
$946,029$209 / 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 91How 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 $638,000 on Dec 30, 2020

3921 BLUE SAGE DR

PROSPER, TX 75078
5
Beds
4.5
Baths
4,533 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.
2020
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

$946K
$862K 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.$638,000 · Dec 30, 2020

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$16,775 (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.$979,000 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$218,385
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$760,615
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$1,023,406
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$979,000

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.0.24
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.No

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
Windsong Elementary SchoolA+
Elementary · Grades KG–5 · 0.4 mi
H
Richland High School
High · Grades 9–12 · 0.6 mi
M
Rushing Middle SchoolA
Middle · Grades 6–8 · 0.8 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

3921 Blue Sage 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 Denton County
  • Costs less per square foot than 89% of homes in Windsong Ranch
  • Bigger than 97% of homes in Denton County
  • Has a bigger lot than 76% of homes in Denton County
  • Newer than 82% 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
$353K$1.7M

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$946,029
CheaperTypical $747,935Pricier

Pricier than 76% of homes nearby

Price per ft²$209
CheaperTypical $224Pricier

Pricier than 34% of homes nearby

Living area4,533 ft²
SmallerTypical 3,425 ft²Bigger

Bigger than 89% of homes nearby

Lot size0.24 ac
SmallerTypical 0.23 acBigger

Bigger than 58% of homes nearby

Year built2020
OlderTypical 2018Newer

Newer than 66% of homes nearby

How 3921 Blue Sage Dr ranks against every home in each area.
MeasureThis homeWindsong RanchProsper 75078Denton County
Estimated valuepricier than$946,02973% of homes76% of homes93% of homes
Price per ft²pricier than$20911% of homes34% of homes54% of homes
Living areabigger than4,533 ft²93% of homes89% of homes97% of homes
Lot sizebigger than0.24 ac72% of homes58% of homes76% of homes
Year builtnewer than202045% of homes66% of homes82% of homes

About 3921 Blue Sage Dr

How much is 3921 Blue Sage Dr, Prosper, TX worth?

The TopHap Estimate for 3921 Blue Sage Dr, Prosper, TX is $946,029 as of Sep 24, 2026. The likely range is $861,672 to $1,030,386. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 3921 Blue Sage Dr, Prosper, TX last sell?

3921 Blue Sage Dr, Prosper, TX last sold on Dec 30, 2020 for $638,000, according to the county's recorded deed.

How big is 3921 Blue Sage Dr, Prosper, TX?

3921 Blue Sage Dr, Prosper, TX has 5 bedrooms, 4.5 bathrooms, 4,533 square feet of living space and a 0.24-acre lot.

When was 3921 Blue Sage Dr, Prosper, TX built?

3921 Blue Sage Dr, Prosper, TX was built in 2020, making it 6 years old. The building has 2 stories.

What schools serve 3921 Blue Sage Dr, Prosper, TX?

3921 Blue Sage Dr, Prosper, TX is assigned to Windsong Elementary School (elementary), rated A+; Richland High School (high); Rushing Middle School (middle), rated A. All sit in Prosper Independent School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 3921 Blue Sage Dr, Prosper, TX compare to other homes in Prosper 75078?

Among the 19,915 homes in Prosper 75078, it is worth more than 76% of them ($946,029 against a typical $747,935), its price per square foot is higher than 34% of them ($209 against a typical $224), it is bigger than 89% of them (4,533 ft² against a typical 3,425 ft²), its lot is bigger than 58% of them (0.24 ac against a typical 0.23 ac) and it is newer than 66% of them (2020 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 3921 Blue Sage Dr, Prosper, TX?

The 2025 property tax bill for 3921 Blue Sage Dr, Prosper, TX was $16,775. The county assessed it at $979,000.

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