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Single Family ResidenceResidential
$759,672$212 / 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 Sep 24, 2026

421 RED CASTLE DR

LEWISVILLE, TX 75056
3
Beds
2.5
Baths
3,591 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.
0.19 ac
Lot SizeThe size of the land the home sits on, from county records.
2006
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$760K
$716K low$803K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$11,471 (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.$755,000 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$156,300
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$598,700
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$757,497
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$755,000

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.0.19
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
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Porch · 134 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.

Foreclosure Filings(2)

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

M
Killian Middle SchoolA
Middle · Grades 6–8 · 0.3 mi
E
Castle Hills Elementary SchoolA+
Elementary · Grades KG–5 · 1.2 mi
H
Hebron High SchoolA-
High · Grades 9–12 · 3.0 mi

District: Lewisville Independent School District

Neighborhood · ZIP 75056These 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.72
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 100.24

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.95%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.34%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.6.9%
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.77,098
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.2,491 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$118,826
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$139,269
Average tempThe average temperature here across a full year.65°F
Annual precipHow much rain and melted snow falls here in a typical year.39 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

421 Red Castle 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 85% of homes in Denton County
  • Costs less per square foot than 87% of homes in Castle Hills
  • Bigger than 88% of homes in The Colony 75056
  • Has a bigger lot than 77% of homes in The Colony 75056
  • Older than 72% of homes in Castle Hills

What homes are worth in The Colony 75056

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

This home
$266K$1.4M

This home is worth more than 80% of homes in The Colony 75056.

How it measures up in The Colony 75056

The dot is this home. The mark in the middle is the typical home in The Colony 75056.

Estimated value$759,672
CheaperTypical $487,912Pricier

Pricier than 80% of homes nearby

Price per ft²$212
CheaperTypical $220Pricier

Pricier than 40% of homes nearby

Living area3,591 ft²
SmallerTypical 2,206 ft²Bigger

Bigger than 88% of homes nearby

Lot size0.19 ac
SmallerTypical 0.16 acBigger

Bigger than 77% of homes nearby

Year built2006
OlderTypical 2001Newer

Newer than 62% of homes nearby

How 421 Red Castle Dr ranks against every home in each area.
MeasureThis homeCastle HillsThe Colony 75056Denton County
Estimated valuepricier than$759,67256% of homes80% of homes85% of homes
Price per ft²pricier than$21213% of homes40% of homes57% of homes
Living areabigger than3,591 ft²72% of homes88% of homes88% of homes
Lot sizebigger than0.19 ac64% of homes77% of homes59% of homes
Year builtnewer than200628% of homes62% of homes53% of homes

About 421 Red Castle Dr

How much is 421 Red Castle Dr, Lewisville, TX worth?

The TopHap Estimate for 421 Red Castle Dr, Lewisville, TX is $759,672 as of Sep 24, 2026. The likely range is $716,218 to $803,126. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 421 Red Castle Dr, Lewisville, TX last sell?

421 Red Castle Dr, Lewisville, TX last sold on Apr 7, 2026, according to the county's recorded deed.

How big is 421 Red Castle Dr, Lewisville, TX?

421 Red Castle Dr, Lewisville, TX has 3 bedrooms, 2.5 bathrooms, 3,591 square feet of living space and a 0.19-acre lot.

When was 421 Red Castle Dr, Lewisville, TX built?

421 Red Castle Dr, Lewisville, TX was built in 2006, making it 20 years old. The building has 2 stories.

What schools serve 421 Red Castle Dr, Lewisville, TX?

421 Red Castle Dr, Lewisville, TX is assigned to Killian Middle School (middle), rated A; Castle Hills Elementary School (elementary), rated A+; Hebron High School (high), rated A-. All sit in Lewisville Independent School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 421 Red Castle Dr, Lewisville, TX compare to other homes in The Colony 75056?

Among the 20,084 homes in The Colony 75056, it is worth more than 80% of them ($759,672 against a typical $487,912), its price per square foot is higher than 40% of them ($212 against a typical $220), it is bigger than 88% of them (3,591 ft² against a typical 2,206 ft²), its lot is bigger than 77% of them (0.19 ac against a typical 0.16 ac) and it is newer than 62% of them (2006 against a typical 2001). Measured against all of Denton County, it is worth more than 85% 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 421 Red Castle Dr, Lewisville, TX?

The 2025 property tax bill for 421 Red Castle Dr, Lewisville, TX was $11,471. The county assessed it at $755,000.

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