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Single Family ResidenceResidential
$566,511$261 / 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 96How 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

421 HIGH BROOK DR

RICHARDSON, TX 75080
3
Beds
2
Baths
2,171 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.
1971
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
1
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$567K
$544K low$589K high
Est. Owner EquityRoughly how much of the home's value the owner would keep after paying off known loans. It is our estimate minus the loans still owed.$430,011
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$344,009
Loan-to-ValueHow much is still owed on the home compared to what it is worth. 80% means loans equal 80% of our estimate, so it shifts when the estimate does.25%
1st MortgageA loan still believed to be open on this home, in the order lenders get repaid. The first position is paid back before the second.$136,500
INTEGRITY MTG /TX · recorded Aug 12, 2014

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$2,028 (2024)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$246,652 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$142,500
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$104,152
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$238,987
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$246,652

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyCollin
Effective Year BuiltAn adjusted build year that accounts for condition and major remodels. A big renovation can make a home count as newer than it is.2005
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
FoundationWhat the home is built on, such as a concrete slab, a crawl space, or a basement.Mat/Raft Foundation (Slab)
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 · 96 ft²

Transaction History(3)

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
Aldridge Elementary SchoolB+
Elementary · Grades KG–5 · 0.4 mi
M
Wilson Middle SchoolB
Middle · Grades 6–8 · 1.4 mi
H
Plano Senior High SchoolA-
High · Grades 11–12 · 2.8 mi

District: Plano Independent School District

Neighborhood · ZIP 75080These 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.102
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.105
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.93%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.36%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.14%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.3%
PopulationHow many people live in this area.59,499
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.5,130 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$93,240
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$112,996
Average tempThe average temperature here across a full year.65°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%

Ownership

OccupancyWhether the owner appears to live here or somewhere else. It is inferred from the mailing address on record.Owner occupied
Company ownedWhether the owner is a company or trust rather than a person.No

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 High Brook 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 less than 68% of homes in Canyon Creek
  • Costs more per square foot than 87% of homes in Collin County
  • Bigger than 66% of homes in Richardson 75080
  • Older than 96% of homes in Collin County

What homes are worth in Richardson 75080

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

This home
$180K$1.3M

This home is worth more than 66% of homes in Richardson 75080.

How it measures up in Richardson 75080

The dot is this home. The mark in the middle is the typical home in Richardson 75080.

Estimated value$566,511
CheaperTypical $470,667Pricier

Pricier than 66% of homes nearby

Price per ft²$261
CheaperTypical $265Pricier

Pricier than 45% of homes nearby

Living area2,171 ft²
SmallerTypical 1,824 ft²Bigger

Bigger than 66% of homes nearby

Year built1971
OlderTypical 1964Newer

Newer than 75% of homes nearby

How 421 High Brook Dr ranks against every home in each area.
MeasureThis homeCanyon CreekRichardson 75080Collin County
Estimated valuepricier than$566,51132% of homes66% of homes60% of homes
Price per ft²pricier than$26133% of homes45% of homes87% of homes
Living areabigger than2,171 ft²36% of homes66% of homes39% of homes
Year builtnewer than197170% of homes75% of homes4% of homes

About 421 High Brook Dr

How much is 421 High Brook Dr, Richardson, TX worth?

The TopHap Estimate for 421 High Brook Dr, Richardson, TX is $566,511 as of Jul 14, 2026. The likely range is $543,856 to $589,166. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 421 High Brook Dr, Richardson, TX last sell?

421 High Brook Dr, Richardson, TX last sold on Aug 12, 2014, according to the county's recorded deed.

How big is 421 High Brook Dr, Richardson, TX?

421 High Brook Dr, Richardson, TX has 3 bedrooms, 2 bathrooms and 2,171 square feet of living space.

When was 421 High Brook Dr, Richardson, TX built?

421 High Brook Dr, Richardson, TX was built in 1971, making it 55 years old. The building has 1 story.

What schools serve 421 High Brook Dr, Richardson, TX?

421 High Brook Dr, Richardson, TX is assigned to Aldridge Elementary School (elementary), rated B+; Wilson Middle School (middle), rated B; Plano Senior High School (high), rated A-. All sit in Plano Independent School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 421 High Brook Dr, Richardson, TX compare to other homes in Richardson 75080?

Among the 12,735 homes in Richardson 75080, it is worth more than 66% of them ($566,511 against a typical $470,667), its price per square foot is higher than 45% of them ($261 against a typical $265), it is bigger than 66% of them (2,171 ft² against a typical 1,824 ft²) and it is newer than 75% of them (1971 against a typical 1964). Measured against all of Collin County, it is worth more than 60% 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 High Brook Dr, Richardson, TX?

The 2024 property tax bill for 421 High Brook Dr, Richardson, TX was $2,028. The county assessed it at $246,652.

Closest homes

More homes in Richardson 75080

Assigned schools

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