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Single Family ResidenceResidential
$545,486$198 / 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 $198,800 on Oct 5, 2020

3121 SAN MARCOS DR

ROCKWALL, TX 75032
4
Beds
3
Baths
2,751 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.
0.29 ac
Lot SizeThe size of the land the home sits on, from county records.
2020
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

$545K
$508K low$583K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$198,800 · Oct 5, 2020
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.$386,486
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$309,189
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.30%
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.$159,000
DHI MORTGAGE COMPANY LTD · recorded Oct 5, 2020

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,607 (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.$524,848 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$70,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$454,848
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$548,085
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$524,848

Climate Risk

Overall riskThe average of the five hazard scores below, on a 0 to 100 scale. Higher means greater projected risk over the coming decades.57
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
47
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
94
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
59
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
88
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.

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
Lot (acres)The size of the land the home sits on, from county records.0.29
ConstructionThe main material the home's frame and walls are built from.Wood (Unspecified)
RoofThe main material covering the roof, such as asphalt shingle or tile.Composition 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

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
Sharon Shannon Elementary SchoolA
Elementary · Grades PK–6 · 0.3 mi
M
Ursula Rakow Middle School
Middle · Grades 7–8 · 1.9 mi
H
Rockwall-Heath High SchoolB+
High · Grades 10–12 · 4.7 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%

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

3121 San Marcos 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 70% of homes in Rockwall County
  • Costs more per square foot than 65% of homes in Rockwall County
  • Has a bigger lot than 71% of homes in Rockwall County
  • Newer than 95% of homes in Rockwall 75032

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
$195K$2M

This home is worth more than 50% 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$545,486
CheaperTypical $541,385Pricier

Pricier than 50% of homes nearby

Price per ft²$198
CheaperTypical $209Pricier

Pricier than 40% of homes nearby

Living area2,751 ft²
SmallerTypical 2,754 ft²Bigger

Bigger than 50% of homes nearby

Lot size0.29 ac
SmallerTypical 0.26 acBigger

Bigger than 53% of homes nearby

Year built2020
OlderTypical 2002Newer

Newer than 95% of homes nearby

How 3121 San Marcos Dr ranks against every home in each area.
MeasureThis homeRockwall 75032Rockwall County
Estimated valuepricier than$545,48650% of homes70% of homes
Price per ft²pricier than$19840% of homes65% of homes
Living areabigger than2,751 ft²50% of homes64% of homes
Lot sizebigger than0.29 ac53% of homes71% of homes
Year builtnewer than202095% of homes90% of homes

About 3121 San Marcos Dr

How much is 3121 San Marcos Dr, Rockwall, TX worth?

The TopHap Estimate for 3121 San Marcos Dr, Rockwall, TX is $545,486 as of Jul 14, 2026. The likely range is $507,917 to $583,055. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 3121 San Marcos Dr, Rockwall, TX last sell?

3121 San Marcos Dr, Rockwall, TX last sold on Oct 5, 2020 for $198,800, according to the county's recorded deed.

How big is 3121 San Marcos Dr, Rockwall, TX?

3121 San Marcos Dr, Rockwall, TX has 4 bedrooms, 3 bathrooms, 2,751 square feet of living space and a 0.29-acre lot.

When was 3121 San Marcos Dr, Rockwall, TX built?

3121 San Marcos Dr, Rockwall, TX was built in 2020, making it 6 years old. The building has 1 story.

What schools serve 3121 San Marcos Dr, Rockwall, TX?

3121 San Marcos Dr, Rockwall, TX is assigned to Sharon Shannon Elementary School (elementary), rated A; Ursula Rakow Middle School (middle); Rockwall-Heath High School (high), rated B+. All sit in Rockwall Independent School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 3121 San Marcos Dr, Rockwall, TX compare to other homes in Rockwall 75032?

Among the 13,644 homes in Rockwall 75032, it is worth more than 50% of them ($545,486 against a typical $541,385), its price per square foot is higher than 40% of them ($198 against a typical $209), it is bigger than 50% of them (2,751 ft² against a typical 2,754 ft²), its lot is bigger than 53% of them (0.29 ac against a typical 0.26 ac) and it is newer than 95% of them (2020 against a typical 2002). Measured against all of Rockwall County, it is worth more than 70% 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 3121 San Marcos Dr, Rockwall, TX?

The 2025 property tax bill for 3121 San Marcos Dr, Rockwall, TX was $3,607. The county assessed it at $524,848.

Closest homes

More homes in Rockwall 75032

Assigned schools

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