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Single Family ResidenceResidential
$511,435$226 / 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 95How 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 $196,300 on Mar 15, 2021

638 NORTHILL DR

RICHARDSON, TX 75080
5
Beds
3
Baths
2,263 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.
0.22 ac
Lot SizeThe size of the land the home sits on, from county records.
1955
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

$511K
$487K low$536K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$196,300 · Mar 15, 2021
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.$354,435
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$283,548
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.31%
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.$157,000
COLONIAL NATIONAL MORTGAGE · recorded Mar 15, 2021

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$7,301 (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.$524,460 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$125,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$399,460
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$461,710
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$524,460

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.0.22
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(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
Richardson Heights Elementary SchoolB-
Elementary · Grades PK–6 · 0.3 mi
M
Richardson West Junior High Arts & Technology MagnetB
Middle · Grades 7–8 · 1.1 mi
H
Richardson High SchoolB-
High · Grades 9–12 · 1.1 mi

District: Richardson 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

638 Northill 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 77% of homes in Dallas County
  • Costs less per square foot than 92% of homes in Heights Park
  • Bigger than 87% of homes in Heights Park
  • Has a bigger lot than 65% of homes in Dallas County
  • Older than 94% of homes in Richardson 75080

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
$175K$1.3M

This home is worth more than 57% 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$511,435
CheaperTypical $469,505Pricier

Pricier than 57% of homes nearby

Price per ft²$226
CheaperTypical $265Pricier

Pricier than 17% of homes nearby

Living area2,263 ft²
SmallerTypical 1,830 ft²Bigger

Bigger than 70% of homes nearby

Lot size0.22 ac
SmallerTypical 0.21 acBigger

Bigger than 61% of homes nearby

Year built1955
OlderTypical 1964Newer

Newer than 6% of homes nearby

How 638 Northill Dr ranks against every home in each area.
MeasureThis homeHeights ParkRichardson 75080Dallas County
Estimated valuepricier than$511,43572% of homes57% of homes77% of homes
Price per ft²pricier than$2268% of homes17% of homes69% of homes
Living areabigger than2,263 ft²87% of homes70% of homes73% of homes
Lot sizebigger than0.22 ac61% of homes61% of homes65% of homes
Year builtnewer than195532% of homes6% of homes20% of homes

About 638 Northill Dr

How much is 638 Northill Dr, Richardson, TX worth?

The TopHap Estimate for 638 Northill Dr, Richardson, TX is $511,435 as of Jul 14, 2026. The likely range is $487,299 to $535,571. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 638 Northill Dr, Richardson, TX last sell?

638 Northill Dr, Richardson, TX last sold on Mar 15, 2021 for $196,300, according to the county's recorded deed.

How big is 638 Northill Dr, Richardson, TX?

638 Northill Dr, Richardson, TX has 5 bedrooms, 3 bathrooms, 2,263 square feet of living space and a 0.22-acre lot.

When was 638 Northill Dr, Richardson, TX built?

638 Northill Dr, Richardson, TX was built in 1955, making it 71 years old. The building has 1 story.

What schools serve 638 Northill Dr, Richardson, TX?

638 Northill Dr, Richardson, TX is assigned to Richardson Heights Elementary School (elementary), rated B-; Richardson West Junior High Arts & Technology Magnet (middle), rated B; Richardson High School (high), rated B-. All sit in Richardson Independent School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 638 Northill Dr, Richardson, TX compare to other homes in Richardson 75080?

Among the 12,735 homes in Richardson 75080, it is worth more than 57% of them ($511,435 against a typical $469,505), its price per square foot is higher than 17% of them ($226 against a typical $265), it is bigger than 70% of them (2,263 ft² against a typical 1,830 ft²), its lot is bigger than 61% of them (0.22 ac against a typical 0.21 ac) and it is newer than 6% of them (1955 against a typical 1964). Measured against all of Dallas County, it is worth more than 77% 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 638 Northill Dr, Richardson, TX?

The 2025 property tax bill for 638 Northill Dr, Richardson, TX was $7,301. The county assessed it at $524,460.

Closest homes

More homes in Richardson 75080

Assigned schools

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