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Single Family ResidenceResidential
$369,044$193 / 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 93How 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
Last sold for $254,700 on May 22, 2018

421 SUMMIT DR

RICHARDSON, TX 75081
4
Beds
2.5
Baths
1,916 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.
0.23 ac
Lot SizeThe size of the land the home sits on, from county records.
1967
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$369K
$344K low$394K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$254,700 · May 22, 2018
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.$12,329
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$9,863
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.96%
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.$256,715
SFMC LP · recorded Jan 14, 2020
2nd 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.$100,000
PENNYMAC LOAN SERVICES LLC

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,614 (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.$344,630 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$150,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$194,630
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$344,630
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$344,630

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyDALLAS
Lot (acres)The size of the land the home sits on, from county records.0.23
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
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(2)

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
Richardson Terrace Elementary SchoolA-
Elementary · Grades PK–6 · 0.9 mi
H
Berkner High SchoolC-
High · Grades 9–12 · 1.9 mi
M
Apollo Junior High SchoolC+
Middle · Grades 7–8 · 2.0 mi

District: Richardson Independent School District

Neighborhood · ZIP 75081These 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.73
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.103
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.28

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.30%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.8.5%
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.37,696
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.4,098 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$91,627
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$112,191
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 Summit 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 69% of homes in Richardson 75081
  • Costs less per square foot than 84% of homes in Highland Terrace
  • Bigger than 70% of homes in Highland Terrace
  • Has a bigger lot than 74% of homes in Richardson 75081
  • Older than 81% of homes in Richardson 75081

What homes are worth in Richardson 75081

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

This home
$230K$666K

This home is worth more than 31% of homes in Richardson 75081.

How it measures up in Richardson 75081

The dot is this home. The mark in the middle is the typical home in Richardson 75081.

Estimated value$369,044
CheaperTypical $405,710Pricier

Pricier than 31% of homes nearby

Price per ft²$193
CheaperTypical $205Pricier

Pricier than 33% of homes nearby

Living area1,916 ft²
SmallerTypical 1,998 ft²Bigger

Bigger than 42% of homes nearby

Lot size0.23 ac
SmallerTypical 0.21 acBigger

Bigger than 74% of homes nearby

Year built1967
OlderTypical 1975Newer

Newer than 19% of homes nearby

How 421 Summit Dr ranks against every home in each area.
MeasureThis homeHighland TerraceRichardson 75081Dallas County
Estimated valuepricier than$369,04454% of homes31% of homes62% of homes
Price per ft²pricier than$19316% of homes33% of homes50% of homes
Living areabigger than1,916 ft²70% of homes42% of homes61% of homes
Lot sizebigger than0.23 ac53% of homes74% of homes68% of homes
Year builtnewer than196775% of homes19% of homes36% of homes

About 421 Summit Dr

How much is 421 Summit Dr, Richardson, TX worth?

The TopHap Estimate for 421 Summit Dr, Richardson, TX is $369,044 as of Jul 14, 2026. The likely range is $344,370 to $393,718. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 421 Summit Dr, Richardson, TX last sell?

421 Summit Dr, Richardson, TX last sold on May 22, 2018 for $254,700, according to the county's recorded deed.

How big is 421 Summit Dr, Richardson, TX?

421 Summit Dr, Richardson, TX has 4 bedrooms, 2.5 bathrooms, 1,916 square feet of living space and a 0.23-acre lot.

When was 421 Summit Dr, Richardson, TX built?

421 Summit Dr, Richardson, TX was built in 1967, making it 59 years old. The building has 1 story.

What schools serve 421 Summit Dr, Richardson, TX?

421 Summit Dr, Richardson, TX is assigned to Richardson Terrace Elementary School (elementary), rated A-; Berkner High School (high), rated C-; Apollo Junior High School (middle), rated C+. All sit in Richardson Independent School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 421 Summit Dr, Richardson, TX compare to other homes in Richardson 75081?

Among the 9,921 homes in Richardson 75081, it is worth more than 31% of them ($369,044 against a typical $405,710), its price per square foot is higher than 33% of them ($193 against a typical $205), it is bigger than 42% of them (1,916 ft² against a typical 1,998 ft²), its lot is bigger than 74% of them (0.23 ac against a typical 0.21 ac) and it is newer than 19% of them (1967 against a typical 1975). Measured against all of Dallas County, it is worth more than 62% 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 Summit Dr, Richardson, TX?

The 2025 property tax bill for 421 Summit Dr, Richardson, TX was $4,614. The county assessed it at $344,630.

Closest homes

More homes in Richardson 75081

Assigned schools

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