Skip to content
Skip to content
TopHapOpen in map
Single Family ResidenceResidential
$293,202$243 / 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 94How 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 $64,000 on Jul 28, 1995

121 MARIANA DR

RICHARDSON, TX 75081
3
Beds
1.5
Baths
1,206 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.
0.19 ac
Lot SizeThe size of the land the home sits on, from county records.
1963
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

$293K
$275K low$312K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$64,000 · Jul 28, 1995

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$841 (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.$275,400 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$100,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$175,400
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$275,400
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$275,400

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.0.19
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

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

E
Mark Twain Elementary SchoolC+
Elementary · Grades PK–6 · 0.4 mi
M
Apollo Junior High SchoolC+
Middle · Grades 7–8 · 0.9 mi
H
Berkner High SchoolC-
High · Grades 9–12 · 1.3 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%

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

121 Mariana 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 92% of homes in Richardson 75081
  • Costs more per square foot than 89% of homes in Richardson 75081
  • Smaller than 94% of homes in Richardson 75081
  • Has a smaller lot than 74% of homes in Richardson 75081
  • Older than 84% 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
$229K$660K

This home is worth more than 8% 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$293,202
CheaperTypical $405,442Pricier

Pricier than 8% of homes nearby

Price per ft²$243
CheaperTypical $204Pricier

Pricier than 89% of homes nearby

Living area1,206 ft²
SmallerTypical 1,996 ft²Bigger

Bigger than 6% of homes nearby

Lot size0.19 ac
SmallerTypical 0.21 acBigger

Bigger than 26% of homes nearby

Year built1963
OlderTypical 1975Newer

Newer than 16% of homes nearby

How 121 Mariana Dr ranks against every home in each area.
MeasureThis homeMark TwainRichardson 75081Dallas County
Estimated valuepricier than$293,20237% of homes8% of homes43% of homes
Price per ft²pricier than$24378% of homes89% of homes75% of homes
Living areabigger than1,206 ft²20% of homes6% of homes20% of homes
Lot sizebigger than0.19 ac67% of homes26% of homes51% of homes
Year builtnewer than196350% of homes16% of homes32% of homes

About 121 Mariana Dr

How much is 121 Mariana Dr, Richardson, TX worth?

The TopHap Estimate for 121 Mariana Dr, Richardson, TX is $293,202 as of Jul 14, 2026. The likely range is $274,612 to $311,792. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 121 Mariana Dr, Richardson, TX last sell?

121 Mariana Dr, Richardson, TX last sold on Jul 28, 1995 for $64,000, according to the county's recorded deed.

How big is 121 Mariana Dr, Richardson, TX?

121 Mariana Dr, Richardson, TX has 3 bedrooms, 1.5 bathrooms, 1,206 square feet of living space and a 0.19-acre lot.

When was 121 Mariana Dr, Richardson, TX built?

121 Mariana Dr, Richardson, TX was built in 1963, making it 63 years old. The building has 1 story.

What schools serve 121 Mariana Dr, Richardson, TX?

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

How does 121 Mariana Dr, Richardson, TX compare to other homes in Richardson 75081?

Among the 9,921 homes in Richardson 75081, it is worth more than 8% of them ($293,202 against a typical $405,442), its price per square foot is higher than 89% of them ($243 against a typical $204), it is bigger than 6% of them (1,206 ft² against a typical 1,996 ft²), its lot is bigger than 26% of them (0.19 ac against a typical 0.21 ac) and it is newer than 16% of them (1963 against a typical 1975). Measured against all of Dallas County, it is worth more than 43% 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 121 Mariana Dr, Richardson, TX?

The 2025 property tax bill for 121 Mariana Dr, Richardson, TX was $841. The county assessed it at $275,400.

More homes on Mariana Dr

Closest homes

More homes in Richardson 75081

Assigned schools

Explore the area

See this home in context

Open 121 Mariana Dr on TopHap’s interactive map to compare it against every sale nearby, overlay school zones and flood risk, and run a CMA.

Open in map
A flyover of TopHap's photorealistic 3D map, with recorded sale prices pinned to homes
Search any address, city, zip, or county…3D$1.9M$6.25MOpen in map