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Single Family ResidenceResidential
$308,964$189 / 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

140 LT JOHN DECKER DR

SAN MARCOS, TX 78666
3
Beds
2
Baths
1,635 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.
0.14 ac
Lot SizeThe size of the land the home sits on, from county records.
2023
Year BuiltThe year the home was originally built, according to county records.

Valuation

$309K
$289K low$329K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$717 (2024)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$326,390 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$66,380
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$260,010
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$344,910
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$326,390

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyHays
Lot (acres)The size of the land the home sits on, from county records.0.14
FoundationWhat the home is built on, such as a concrete slab, a crawl space, or a basement.Mat/Raft Foundation (Slab)
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.Mixed
PoolWhether the property has a pool, and what kind, such as in-ground.No

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.

E
Rodriguez Elementary SchoolB-
Elementary · Grades KG–5 · 0.4 mi
H
San Marcos High SchoolD
High · Grades 9–12 · 2.5 mi
M
Miller Middle SchoolC-
Middle · Grades 6–8 · 3.8 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

140 Lt John Decker 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.

  • Smaller than 67% of homes in Hays County
  • Has a smaller lot than 88% of homes in San Marcos 78666
  • Newer than 96% 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
$158K$895K

This home is worth more than 48% 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$308,964
CheaperTypical $315,618Pricier

Pricier than 48% of homes nearby

Price per ft²$189
CheaperTypical $192Pricier

Pricier than 48% of homes nearby

Living area1,635 ft²
SmallerTypical 1,657 ft²Bigger

Bigger than 49% of homes nearby

Lot size0.14 ac
SmallerTypical 0.33 acBigger

Bigger than 12% of homes nearby

Year built2023
OlderTypical 2010Newer

Newer than 96% of homes nearby

How 140 Lt John Decker Dr ranks against every home in each area.
MeasureThis homeSan Marcos 78666Hays County
Estimated valuepricier than$308,96448% of homes37% of homes
Price per ft²pricier than$18948% of homes49% of homes
Living areabigger than1,635 ft²49% of homes33% of homes
Lot sizebigger than0.14 ac12% of homes16% of homes
Year builtnewer than202396% of homes95% of homes

About 140 Lt John Decker Dr

How much is 140 Lt John Decker Dr, San Marcos, TX worth?

The TopHap Estimate for 140 Lt John Decker Dr, San Marcos, TX is $308,964 as of Oct 21, 2026. The likely range is $288,558 to $329,370. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 140 Lt John Decker Dr, San Marcos, TX last sell?

140 Lt John Decker Dr, San Marcos, TX last sold on May 16, 2023, according to the county's recorded deed.

How big is 140 Lt John Decker Dr, San Marcos, TX?

140 Lt John Decker Dr, San Marcos, TX has 3 bedrooms, 2 bathrooms, 1,635 square feet of living space and a 0.14-acre lot.

When was 140 Lt John Decker Dr, San Marcos, TX built?

140 Lt John Decker Dr, San Marcos, TX was built in 2023, making it 3 years old.

What schools serve 140 Lt John Decker Dr, San Marcos, TX?

140 Lt John Decker Dr, San Marcos, TX is assigned to Rodriguez Elementary School (elementary), rated B-; San Marcos High School (high), rated D; Miller Middle School (middle), rated C-. All sit in San Marcos Consolidated Independent School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 140 Lt John Decker Dr, San Marcos, TX compare to other homes in San Marcos 78666?

Among the 22,665 homes in San Marcos 78666, it is worth more than 48% of them ($308,964 against a typical $315,618), its price per square foot is higher than 48% of them ($189 against a typical $192), it is bigger than 49% of them (1,635 ft² against a typical 1,657 ft²), its lot is bigger than 12% of them (0.14 ac against a typical 0.33 ac) and it is newer than 96% of them (2023 against a typical 2010). Measured against all of Hays County, it is worth more than 37% 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 140 Lt John Decker Dr, San Marcos, TX?

The 2024 property tax bill for 140 Lt John Decker Dr, San Marcos, TX was $717. The county assessed it at $326,390.

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