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Single Family ResidenceResidential
$221,858$222 / 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 96How 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

509 ST MARYS ST

ROCKWALL, TX 75087
0
Baths
1,000 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.
0.13 ac
Lot SizeThe size of the land the home sits on, from county records.
1983
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

$222K
$214K low$230K high
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.$221,858
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$177,486

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,792 (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.$237,145 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$160,950
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$76,195
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$240,724
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$237,145

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.1990
Lot (acres)The size of the land the home sits on, from county records.0.13
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.Carport (Unspecified)
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.Porch · 30 ft²

Transaction History(4)

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
Howard Dobbs Elementary SchoolA-
Elementary · Grades PK–6 · 0.5 mi
M
Herman E. Utley Middle SchoolA-
Middle · Grades 7–8 · 0.8 mi
H
Rockwall High SchoolA
High · Grades 10–12 · 1.5 mi

District: Rockwall Independent School District

Neighborhood · ZIP 75087These 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.99
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.32%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.3.6%
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.54,034
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,581 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$119,886
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$149,394
Average tempThe average temperature here across a full year.65°F
Annual precipHow much rain and melted snow falls here in a typical year.41 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.Absentee owner
Company ownedWhether the owner is a company or trust rather than a person.Yes

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

509 St Marys 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.

  • Among the least valuable homes in Rockwall 75087
  • Costs more per square foot than 88% of homes in Rockwall 75087
  • Among the smallest homes in Rockwall 75087
  • Has a smaller lot than 93% of homes in Rockwall 75087
  • Older than 90% of homes in Rockwall County

What homes are worth in Rockwall 75087

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

This home
$247K$935K

This home is worth less than almost all homes in Rockwall 75087.

How it measures up in Rockwall 75087

The dot is this home. The mark in the middle is the typical home in Rockwall 75087.

Estimated value$221,858
CheaperTypical $456,048Pricier

Cheaper than almost all homes nearby

Price per ft²$222
CheaperTypical $183Pricier

Pricier than 88% of homes nearby

Living area1,000 ft²
SmallerTypical 2,558 ft²Bigger

Smaller than almost all homes nearby

Lot size0.13 ac
SmallerTypical 0.21 acBigger

Bigger than 7% of homes nearby

Year built1983
OlderTypical 2005Newer

Newer than 13% of homes nearby

How 509 St Marys St ranks against every home in each area.
MeasureThis homeRenfroRockwall 75087Rockwall County
Estimated valuepricier than$221,85830% of homesalmost no homes2% of homes
Price per ft²pricier than$22257% of homes88% of homes81% of homes
Living areabigger than1,000 ft²26% of homesalmost no homes2% of homes
Lot sizebigger than0.13 ac10% of homes7% of homes11% of homes
Year builtnewer than198363% of homes13% of homes10% of homes

About 509 St Marys St

How much is 509 St Marys St, Rockwall, TX worth?

The TopHap Estimate for 509 St Marys St, Rockwall, TX is $221,858 as of Jul 14, 2026. The likely range is $213,533 to $230,183. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 509 St Marys St, Rockwall, TX last sell?

509 St Marys St, Rockwall, TX last sold on Jun 28, 2012, according to the county's recorded deed.

How big is 509 St Marys St, Rockwall, TX?

509 St Marys St, Rockwall, TX has 1,000 square feet of living space and a 0.13-acre lot.

When was 509 St Marys St, Rockwall, TX built?

509 St Marys St, Rockwall, TX was built in 1983, making it 43 years old. The building has 1 story.

What schools serve 509 St Marys St, Rockwall, TX?

509 St Marys St, Rockwall, TX is assigned to Howard Dobbs Elementary School (elementary), rated A-; Herman E. Utley Middle School (middle), rated A-; Rockwall High School (high), rated A. All sit in Rockwall Independent School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 509 St Marys St, Rockwall, TX compare to other homes in Rockwall 75087?

Among the 16,688 homes in Rockwall 75087, it is worth more than almost none of them ($221,858 against a typical $456,048), its price per square foot is higher than 88% of them ($222 against a typical $183), it is bigger than almost none of them (1,000 ft² against a typical 2,558 ft²), its lot is bigger than 7% of them (0.13 ac against a typical 0.21 ac) and it is newer than 13% of them (1983 against a typical 2005). Measured against all of Rockwall County, it is worth more than 2% 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 509 St Marys St, Rockwall, TX?

The 2025 property tax bill for 509 St Marys St, Rockwall, TX was $3,792. The county assessed it at $237,145.

Closest homes

More homes in Rockwall 75087

Assigned schools

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