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Single Family ResidenceResidential
$255,942$250 / 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 97How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Aug 30, 2026

421 MARILU ST

RICHARDSON, TX 75080
2
Beds
1
Baths
1,023 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.
0.2 ac
Lot SizeThe size of the land the home sits on, from county records.
1956
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

$256K
$249K low$263K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$5,835 (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.$262,190 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$105,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$157,190
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$267,460
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$262,190

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.0.20
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
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(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
Northrich Elementary SchoolC+
Elementary · Grades PK–6 · 0.4 mi
M
Richardson North Junior High SchoolB-
Middle · Grades 7–8 · 1.1 mi
H
Pearce High SchoolB
High · Grades 9–12 · 2.3 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%

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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 Marilu St 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 93% of homes in Richardson 75080
  • Costs more per square foot than 77% of homes in Dallas County
  • Smaller than 97% of homes in Richardson 75080
  • Has a smaller lot than 66% of homes in Richardson 75080
  • Older than 91% 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
$172K$1.3M

This home is worth more than 7% 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$255,942
CheaperTypical $469,900Pricier

Pricier than 7% of homes nearby

Price per ft²$250
CheaperTypical $267Pricier

Pricier than 34% of homes nearby

Living area1,023 ft²
SmallerTypical 1,836 ft²Bigger

Bigger than 3% of homes nearby

Lot size0.2 ac
SmallerTypical 0.21 acBigger

Bigger than 34% of homes nearby

Year built1956
OlderTypical 1964Newer

Newer than 9% of homes nearby

How 421 Marilu St ranks against every home in each area.
MeasureThis homeNorthrichRichardson 75080Dallas County
Estimated valuepricier than$255,94214% of homes7% of homes29% of homes
Price per ft²pricier than$25057% of homes34% of homes77% of homes
Living areabigger than1,023 ft²7% of homes3% of homes10% of homes
Lot sizebigger than0.2 ac50% of homes34% of homes53% of homes
Year builtnewer than195611% of homes9% of homes21% of homes

About 421 Marilu St

How much is 421 Marilu St, Richardson, TX worth?

The TopHap Estimate for 421 Marilu St, Richardson, TX is $255,942 as of Aug 30, 2026. The likely range is $248,745 to $263,139. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 421 Marilu St, Richardson, TX last sell?

421 Marilu St, Richardson, TX last sold on Mar 15, 2022, according to the county's recorded deed.

How big is 421 Marilu St, Richardson, TX?

421 Marilu St, Richardson, TX has 2 bedrooms, 1 bathrooms, 1,023 square feet of living space and a 0.20-acre lot.

When was 421 Marilu St, Richardson, TX built?

421 Marilu St, Richardson, TX was built in 1956, making it 70 years old. The building has 1 story.

What schools serve 421 Marilu St, Richardson, TX?

421 Marilu St, Richardson, TX is assigned to Northrich Elementary School (elementary), rated C+; Richardson North Junior High School (middle), rated B-; Pearce 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 421 Marilu St, Richardson, TX compare to other homes in Richardson 75080?

Among the 12,734 homes in Richardson 75080, it is worth more than 7% of them ($255,942 against a typical $469,900), its price per square foot is higher than 34% of them ($250 against a typical $267), it is bigger than 3% of them (1,023 ft² against a typical 1,836 ft²), its lot is bigger than 34% of them (0.2 ac against a typical 0.21 ac) and it is newer than 9% of them (1956 against a typical 1964). Measured against all of Dallas County, it is worth more than 29% 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 Marilu St, Richardson, TX?

The 2025 property tax bill for 421 Marilu St, Richardson, TX was $5,835. The county assessed it at $262,190.

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