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Single Family ResidenceResidential
$389,417$267 / 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 Sep 24, 2026
Last sold for $332,500,000 on Oct 7, 2026

339 MALLARD LOOP

SAN MARCOS, TX 78666
0
Baths
1,458 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.
0.49 ac
Lot SizeThe size of the land the home sits on, from county records.
2021
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.

Valuation

$389K
$368K low$411K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$332,500,000 · Oct 7, 2026

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$3,145 (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.$220,000 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$78,983
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$141,017
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$233,000
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$220,000

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.19 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
CountyGUADALUPE
Lot (acres)The size of the land the home sits on, from county records.0.49
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.Deck · 144 ft²

Transaction History(7)

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.

H
San Marcos High SchoolD
High · Grades 9–12 · 3.5 mi
E
DeZavala Elementary SchoolD
Elementary · Grades KG–5 · 3.6 mi
M
Goodnight Middle SchoolD
Middle · Grades 6–8 · 3.9 mi

District: San Marcos Consolidated Independent School District

Neighborhood · ZIP 78666These 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.131
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.72
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.16

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.92%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.22%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.18%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.1%
PopulationHow many people live in this area.99,796
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.548 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$54,287
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$69,670
Average tempThe average temperature here across a full year.68°F
Annual precipHow much rain and melted snow falls here in a typical year.37 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.60%

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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

339 Mallard Loop 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 80% of homes in Guadalupe County
  • Costs more per square foot than 96% of homes in Guadalupe County
  • Smaller than 74% of homes in Guadalupe County
  • Has a bigger lot than 81% of homes in Guadalupe County
  • Newer than 84% of homes in San Marcos 78666

What homes are worth in San Marcos 78666

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

This home
$164K$854K

This home is worth more than 69% of homes in San Marcos 78666.

How it measures up in San Marcos 78666

The dot is this home. The mark in the middle is the typical home in San Marcos 78666.

Estimated value$389,417
CheaperTypical $316,890Pricier

Pricier than 69% of homes nearby

Price per ft²$267
CheaperTypical $193Pricier

Pricier than 89% of homes nearby

Living area1,458 ft²
SmallerTypical 1,662 ft²Bigger

Bigger than 38% of homes nearby

Lot size0.49 ac
SmallerTypical 0.34 acBigger

Bigger than 57% of homes nearby

Year built2021
OlderTypical 2010Newer

Newer than 84% of homes nearby

How 339 Mallard Loop ranks against every home in each area.
MeasureThis homeSan Marcos 78666Guadalupe County
Estimated valuepricier than$389,41769% of homes80% of homes
Price per ft²pricier than$26789% of homes96% of homes
Living areabigger than1,458 ft²38% of homes26% of homes
Lot sizebigger than0.49 ac57% of homes81% of homes
Year builtnewer than202184% of homes84% of homes

About 339 Mallard Loop

How much is 339 Mallard Loop, San Marcos, TX worth?

The TopHap Estimate for 339 Mallard Loop, San Marcos, TX is $389,417 as of Sep 24, 2026. The likely range is $367,676 to $411,158. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 339 Mallard Loop, San Marcos, TX last sell?

339 Mallard Loop, San Marcos, TX last sold on Oct 7, 2026 for $332,500,000, according to the county's recorded deed.

How big is 339 Mallard Loop, San Marcos, TX?

339 Mallard Loop, San Marcos, TX has 1,458 square feet of living space and a 0.49-acre lot.

When was 339 Mallard Loop, San Marcos, TX built?

339 Mallard Loop, San Marcos, TX was built in 2021, making it 5 years old. The building has 1 story.

What schools serve 339 Mallard Loop, San Marcos, TX?

339 Mallard Loop, San Marcos, TX is assigned to San Marcos High School (high), rated D; DeZavala Elementary School (elementary), rated D; Goodnight Middle School (middle), rated D. All sit in San Marcos Consolidated Independent School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 339 Mallard Loop, San Marcos, TX compare to other homes in San Marcos 78666?

Among the 22,673 homes in San Marcos 78666, it is worth more than 69% of them ($389,417 against a typical $316,890), its price per square foot is higher than 89% of them ($267 against a typical $193), it is bigger than 38% of them (1,458 ft² against a typical 1,662 ft²), its lot is bigger than 57% of them (0.49 ac against a typical 0.34 ac) and it is newer than 84% of them (2021 against a typical 2010). Measured against all of Guadalupe County, it is worth more than 80% 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 339 Mallard Loop, San Marcos, TX?

The 2025 property tax bill for 339 Mallard Loop, San Marcos, TX was $3,145. The county assessed it at $220,000.

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