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Single Family ResidenceResidential
$379,620$302 / 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 $253,800 on Dec 2, 2019

423 MARILU ST

RICHARDSON, TX 75080
3
Beds
2
Baths
1,258 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.

Valuation

$380K
$351K low$408K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$253,800 · Dec 2, 2019
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.$129,239
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$103,391
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.69%
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.$250,381
NTFN · recorded Dec 2, 2019

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$5,654 (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.$364,230 (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.$259,230
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$384,030
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$364,230

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyDALLAS
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.1986
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
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
Northrich Elementary SchoolC+
Elementary · Grades PK–6 · 0.4 mi
M
Richardson North Junior High SchoolB-
Middle · Grades 7–8 · 1.0 mi
H
Pearce High SchoolB
High · Grades 9–12 · 2.2 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

423 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 75% of homes in Richardson 75080
  • Costs more per square foot than 90% of homes in Northrich
  • Smaller than 88% of homes in Richardson 75080
  • Older than 90% 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
$171K$1.3M

This home is worth more than 25% 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$379,620
CheaperTypical $471,070Pricier

Pricier than 25% of homes nearby

Price per ft²$302
CheaperTypical $265Pricier

Pricier than 83% of homes nearby

Living area1,258 ft²
SmallerTypical 1,827 ft²Bigger

Bigger than 12% of homes nearby

Lot size0.2 ac
SmallerTypical 0.21 acBigger

Bigger than 39% of homes nearby

Year built1956
OlderTypical 1964Newer

Newer than 10% of homes nearby

How 423 Marilu St ranks against every home in each area.
MeasureThis homeNorthrichRichardson 75080Dallas County
Estimated valuepricier than$379,62056% of homes25% of homes63% of homes
Price per ft²pricier than$30290% of homes83% of homes86% of homes
Living areabigger than1,258 ft²33% of homes12% of homes23% of homes
Lot sizebigger than0.2 ac56% of homes39% of homes55% of homes
Year builtnewer than195611% of homes10% of homes21% of homes

About 423 Marilu St

How much is 423 Marilu St, Richardson, TX worth?

The TopHap Estimate for 423 Marilu St, Richardson, TX is $379,620 as of Jul 14, 2026. The likely range is $351,177 to $408,063. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 423 Marilu St, Richardson, TX last sell?

423 Marilu St, Richardson, TX last sold on Dec 2, 2019 for $253,800, according to the county's recorded deed.

How big is 423 Marilu St, Richardson, TX?

423 Marilu St, Richardson, TX has 3 bedrooms, 2 bathrooms, 1,258 square feet of living space and a 0.20-acre lot.

When was 423 Marilu St, Richardson, TX built?

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

What schools serve 423 Marilu St, Richardson, TX?

423 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 423 Marilu St, Richardson, TX compare to other homes in Richardson 75080?

Among the 12,735 homes in Richardson 75080, it is worth more than 25% of them ($379,620 against a typical $471,070), its price per square foot is higher than 83% of them ($302 against a typical $265), it is bigger than 12% of them (1,258 ft² against a typical 1,827 ft²), its lot is bigger than 39% of them (0.2 ac against a typical 0.21 ac) and it is newer than 10% of them (1956 against a typical 1964). Measured against all of Dallas County, it is worth more than 63% 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 423 Marilu St, Richardson, TX?

The 2025 property tax bill for 423 Marilu St, Richardson, TX was $5,654. The county assessed it at $364,230.

Closest homes

More homes in Richardson 75080

Assigned schools

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