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Single Family ResidenceResidential
$993,866$167 / 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 87How 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 $527,500 on May 16, 2017

520 MARIAH BAY DR

ROCKWALL, TX 75032
4
Beds
4.5
Baths
5,967 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.
0.42 ac
Lot SizeThe size of the land the home sits on, from county records.
1990
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
3
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$994K
$860K low$1.1M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$527,500 · May 16, 2017

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$11,532 (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.$899,143 (2026)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$817,403
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$1,094,634

Climate Risk

Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.145 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%
FEMA Flood ZoneFEMA's flood zone for this address. Zones starting with A or V are high risk, and lenders usually require flood insurance there.minimal

Scores 0–100; higher = greater projected risk.

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyROCKWALL
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.1997
Lot (acres)The size of the land the home sits on, from county records.0.42
RoofThe main material covering the roof, such as asphalt shingle or tile.Wood Shingle
HeatingThe type of heating system in the home.Electric
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
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.GazeboTennis court

Transaction History(10)

Sales and refinances filed with the county for this home. Not every transfer is a normal sale, so check the type before comparing prices.

Foreclosure Filings(5)

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

H
Rockwall-Heath High SchoolB+
High · Grades 10–12 · 1.4 mi
E
Amy Parks-Heath Elementary SchoolA-
Elementary · Grades PK–6 · 1.9 mi
M
Maurine Cain Middle SchoolA-
Middle · Grades 7–8 · 2.5 mi

District: Rockwall Independent School District

Neighborhood · ZIP 75032These 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.64
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.102
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.27

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.96%
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.2.2%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.2%
PopulationHow many people live in this area.44,737
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.776 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$142,395
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$178,483
Average tempThe average temperature here across a full year.65°F
Annual precipHow much rain and melted snow falls here in a typical year.42 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.62%

Owner Tools

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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

520 Mariah Bay 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 94% of homes in Rockwall County
  • Costs less per square foot than 84% of homes in Rockwall 75032
  • Among the largest homes in Rockwall County
  • Has a bigger lot than 79% of homes in Rockwall County
  • Older than 80% of homes in Rockwall County

What homes are worth in Rockwall 75032

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

This home
$205K$1.9M

This home is worth more than 86% of homes in Rockwall 75032.

How it measures up in Rockwall 75032

The dot is this home. The mark in the middle is the typical home in Rockwall 75032.

Estimated value$993,866
CheaperTypical $561,841Pricier

Pricier than 86% of homes nearby

Price per ft²$167
CheaperTypical $211Pricier

Pricier than 16% of homes nearby

Living area5,967 ft²
SmallerTypical 2,751 ft²Bigger

Bigger than 98% of homes nearby

Lot size0.42 ac
SmallerTypical 0.27 acBigger

Bigger than 63% of homes nearby

Year built1990
OlderTypical 2002Newer

Newer than 21% of homes nearby

How 520 Mariah Bay Dr ranks against every home in each area.
MeasureThis homeRockwall 75032Rockwall County
Estimated valuepricier than$993,86686% of homes94% of homes
Price per ft²pricier than$16716% of homes31% of homes
Living areabigger than5,967 ft²98% of homesalmost all homes
Lot sizebigger than0.42 ac63% of homes79% of homes
Year builtnewer than199021% of homes20% of homes

About 520 Mariah Bay Dr

How much is 520 Mariah Bay Dr, Rockwall, TX worth?

The TopHap Estimate for 520 Mariah Bay Dr, Rockwall, TX is $993,866 as of Jul 14, 2026. The likely range is $860,237 to $1,127,495. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 520 Mariah Bay Dr, Rockwall, TX last sell?

520 Mariah Bay Dr, Rockwall, TX last sold on May 16, 2017 for $527,500, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 520 Mariah Bay Dr, Rockwall, TX?

520 Mariah Bay Dr, Rockwall, TX has 4 bedrooms, 4.5 bathrooms, 5,967 square feet of living space and a 0.42-acre lot.

When was 520 Mariah Bay Dr, Rockwall, TX built?

520 Mariah Bay Dr, Rockwall, TX was built in 1990, making it 36 years old. The building has 1 story.

What schools serve 520 Mariah Bay Dr, Rockwall, TX?

520 Mariah Bay Dr, Rockwall, TX is assigned to Rockwall-Heath High School (high), rated B+; Amy Parks-Heath Elementary School (elementary), rated A-; Maurine Cain Middle School (middle), rated A-. All sit in Rockwall Independent School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 520 Mariah Bay Dr, Rockwall, TX compare to other homes in Rockwall 75032?

Among the 13,632 homes in Rockwall 75032, it is worth more than 86% of them ($993,866 against a typical $561,841), its price per square foot is higher than 16% of them ($167 against a typical $211), it is bigger than 98% of them (5,967 ft² against a typical 2,751 ft²), its lot is bigger than 63% of them (0.42 ac against a typical 0.27 ac) and it is newer than 21% of them (1990 against a typical 2002). Measured against all of Rockwall County, it is worth more than 94% 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 520 Mariah Bay Dr, Rockwall, TX?

The 2025 property tax bill for 520 Mariah Bay Dr, Rockwall, TX was $11,532. The county assessed it at $899,143.

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