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Single Family ResidenceResidential
$521,186$249 / 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 Oct 21, 2026

320 GUSTAV LN

SAN MARCOS, TX 78666
4
Beds
3
Baths
2,097 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.
1 ac
Lot SizeThe size of the land the home sits on, from county records.
2005
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
9
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$521K
$482K low$560K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,360 (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.$418,588 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$115,927
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$302,661
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$391,037
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$418,588

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyGUADALUPE
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.Yes
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Patio · 340 ft²Porch · 196 ft²

Transaction History(1)

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.

M
Navarro Junior High SchoolB
Middle · Grades 7–8 · 6.7 mi
H
Navarro High SchoolB
High · Grades 9–12 · 6.8 mi
E
Navarro Elementary SchoolB+
Elementary · Grades PK–3 · 6.9 mi

District: Navarro 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

320 Gustav Ln 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 Guadalupe County
  • Costs more per square foot than 95% of homes in Guadalupe County
  • Bigger than 73% of homes in San Marcos 78666
  • Has a bigger lot than 91% of homes in Guadalupe County

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
$163K$888K

This home is worth more than 84% 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$521,186
CheaperTypical $315,760Pricier

Pricier than 84% of homes nearby

Price per ft²$249
CheaperTypical $192Pricier

Pricier than 82% of homes nearby

Living area2,097 ft²
SmallerTypical 1,652 ft²Bigger

Bigger than 73% of homes nearby

Lot size1 ac
SmallerTypical 0.33 acBigger

Bigger than 73% of homes nearby

Year built2005
OlderTypical 2010Newer

Newer than 43% of homes nearby

How 320 Gustav Ln ranks against every home in each area.
MeasureThis homeSan Marcos 78666Guadalupe County
Estimated valuepricier than$521,18684% of homes94% of homes
Price per ft²pricier than$24982% of homes95% of homes
Living areabigger than2,097 ft²73% of homes61% of homes
Lot sizebigger than1 ac73% of homes91% of homes
Year builtnewer than200543% of homes48% of homes

About 320 Gustav Ln

How much is 320 Gustav Ln, San Marcos, TX worth?

The TopHap Estimate for 320 Gustav Ln, San Marcos, TX is $521,186 as of Oct 21, 2026. The likely range is $482,181 to $560,191. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 320 Gustav Ln, San Marcos, TX last sell?

320 Gustav Ln, San Marcos, TX last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 320 Gustav Ln, San Marcos, TX?

320 Gustav Ln, San Marcos, TX has 4 bedrooms, 3 bathrooms and 2,097 square feet of living space.

When was 320 Gustav Ln, San Marcos, TX built?

320 Gustav Ln, San Marcos, TX was built in 2005, making it 21 years old. The building has 1 story.

What schools serve 320 Gustav Ln, San Marcos, TX?

320 Gustav Ln, San Marcos, TX is assigned to Navarro Junior High School (middle), rated B; Navarro High School (high), rated B; Navarro Elementary School (elementary), rated B+. All sit in Navarro Independent School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 320 Gustav Ln, San Marcos, TX compare to other homes in San Marcos 78666?

Among the 22,660 homes in San Marcos 78666, it is worth more than 84% of them ($521,186 against a typical $315,760), its price per square foot is higher than 82% of them ($249 against a typical $192), it is bigger than 73% of them (2,097 ft² against a typical 1,652 ft²), its lot is bigger than 73% of them (1 ac against a typical 0.33 ac) and it is newer than 43% of them (2005 against a typical 2010). Measured against all of Guadalupe 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 320 Gustav Ln, San Marcos, TX?

The 2025 property tax bill for 320 Gustav Ln, San Marcos, TX was $4,360. The county assessed it at $418,588.

More homes on Gustav Ln

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