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Single Family ResidenceResidential
$389,186$624 / 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 69How 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

9820 FM 621

MARTINDALE, TX 78655
0
Baths
624 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.
0.5 ac
Lot SizeThe size of the land the home sits on, from county records.
2015
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
1
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$389K
$270K low$509K 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.$389,186
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$311,349

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$120 (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.$65,552 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$68,559
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$4,021
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$59,712
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$72,580

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.48
11
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
54
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
99
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
46
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
30
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.
Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.7 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.6%

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
StyleThe architectural style of the home, such as ranch or colonial.Mobile Home
CountyGUADALUPE
Lot (acres)The size of the land the home sits on, from county records.0.50
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 · 132 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.

E
Bowie Elementary SchoolD
Elementary · Grades KG–5 · 6.7 mi
H
San Marcos High SchoolC-
High · Grades 9–12 · 7.2 mi
M
Goodnight Middle SchoolC-
Middle · Grades 6–8 · 7.9 mi

District: San Marcos Consolidated Independent School District

Neighborhood · ZIP 78655These 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.152
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.81
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.18

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.94%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.18%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.24%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.0%
PopulationHow many people live in this area.4,721
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.114 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$51,449
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$79,316
Average tempThe average temperature here across a full year.68°F
Annual precipHow much rain and melted snow falls here in a typical year.36 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.60%

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

9820 Fm 621 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 78% of homes in Guadalupe County
  • Among the highest price per square foot in Guadalupe County
  • Among the smallest homes in Guadalupe County
  • Has a bigger lot than 82% of homes in Guadalupe County
  • Newer than 90% of homes in Martindale 78655

What homes are worth in Martindale 78655

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

This home
$138K$1.1M

This home is worth more than 58% of homes in Martindale 78655.

How it measures up in Martindale 78655

The dot is this home. The mark in the middle is the typical home in Martindale 78655.

Estimated value$389,186
CheaperTypical $361,925Pricier

Pricier than 58% of homes nearby

Price per ft²$624
CheaperTypical $233Pricier

Pricier than 98% of homes nearby

Living area624 ft²
SmallerTypical 1,540 ft²Bigger

Bigger than 3% of homes nearby

Lot size0.5 ac
SmallerTypical 0.79 acBigger

Bigger than 36% of homes nearby

Year built2015
OlderTypical 1994Newer

Newer than 90% of homes nearby

How 9820 Fm 621 ranks against every home in each area.
MeasureThis homeMartindale 78655Guadalupe County
Estimated valuepricier than$389,18658% of homes78% of homes
Price per ft²pricier than$62498% of homesalmost all homes
Living areabigger than624 ft²3% of homesalmost no homes
Lot sizebigger than0.5 ac36% of homes82% of homes
Year builtnewer than201590% of homes69% of homes

About 9820 Fm 621

How much is 9820 Fm 621, Martindale, TX worth?

The TopHap Estimate for 9820 Fm 621, Martindale, TX is $389,186 as of Jul 14, 2026. The likely range is $269,830 to $508,542. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 9820 Fm 621, Martindale, TX last sell?

9820 Fm 621, Martindale, TX last sold on Dec 1, 2014, according to the county's recorded deed.

How big is 9820 Fm 621, Martindale, TX?

9820 Fm 621, Martindale, TX has 624 square feet of living space and a 0.50-acre lot.

When was 9820 Fm 621, Martindale, TX built?

9820 Fm 621, Martindale, TX was built in 2015, making it 11 years old. It is a mobile home home. The building has 1 story.

What schools serve 9820 Fm 621, Martindale, TX?

9820 Fm 621, Martindale, TX is assigned to Bowie Elementary School (elementary), rated D; San Marcos High School (high), rated C-; Goodnight 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 9820 Fm 621, Martindale, TX compare to other homes in Martindale 78655?

Among the 1,231 homes in Martindale 78655, it is worth more than 58% of them ($389,186 against a typical $361,925), its price per square foot is higher than 98% of them ($624 against a typical $233), it is bigger than 3% of them (624 ft² against a typical 1,540 ft²), its lot is bigger than 36% of them (0.5 ac against a typical 0.79 ac) and it is newer than 90% of them (2015 against a typical 1994). Measured against all of Guadalupe County, it is worth more than 78% 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 9820 Fm 621, Martindale, TX?

The 2025 property tax bill for 9820 Fm 621, Martindale, TX was $120. The county assessed it at $65,552.

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