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Single Family ResidenceResidential
$227,639$146 / 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 91How 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

521 GREGG LN

SEGUIN, TX 78155
0
Baths
1,560 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.
1991
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

$228K
$208K low$247K 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.$227,639
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$182,111

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$260 (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.$131,235 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$30,318
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$100,917
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$145,000
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$131,235

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.83 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.6%
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.0.50
RoofThe main material covering the roof, such as asphalt shingle or tile.Metal
HeatingThe type of heating system in the home.Central
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.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.Deck · 32 ft²Patio · 240 ft²Porch · 108 ft²

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

M
Jim Barnes Middle SchoolD-
Middle · Grades 6–8 · 6.5 mi
E
Koennecke Elementary SchoolB-
Elementary · Grades KG–5 · 6.7 mi
H
Seguin High SchoolD+
High · Grades 9–12 · 7.4 mi

District: Seguin Independent School District

Neighborhood · ZIP 78155These 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.127
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.84
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.92%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.15%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.13%
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.58,962
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.164 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$70,238
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$91,092
Average tempThe average temperature here across a full year.69°F
Annual precipHow much rain and melted snow falls here in a typical year.35 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

521 Gregg 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 less than 84% of homes in Guadalupe County
  • Costs less per square foot than 65% of homes in Guadalupe County
  • Smaller than 69% of homes in Guadalupe County
  • Has a bigger lot than 82% of homes in Guadalupe County
  • Older than 77% of homes in Guadalupe County

What homes are worth in Seguin 78155

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

This home
$96K$719K

This home is worth more than 32% of homes in Seguin 78155.

How it measures up in Seguin 78155

The dot is this home. The mark in the middle is the typical home in Seguin 78155.

Estimated value$227,639
CheaperTypical $269,222Pricier

Pricier than 32% of homes nearby

Price per ft²$146
CheaperTypical $158Pricier

Pricier than 36% of homes nearby

Living area1,560 ft²
SmallerTypical 1,627 ft²Bigger

Bigger than 44% of homes nearby

Lot size0.5 ac
SmallerTypical 0.24 acBigger

Bigger than 70% of homes nearby

Year built1991
OlderTypical 2000Newer

Newer than 37% of homes nearby

How 521 Gregg Ln ranks against every home in each area.
MeasureThis homeSeguin 78155Guadalupe County
Estimated valuepricier than$227,63932% of homes16% of homes
Price per ft²pricier than$14636% of homes35% of homes
Living areabigger than1,560 ft²44% of homes31% of homes
Lot sizebigger than0.5 ac70% of homes82% of homes
Year builtnewer than199137% of homes23% of homes

About 521 Gregg Ln

How much is 521 Gregg Ln, Seguin, TX worth?

The TopHap Estimate for 521 Gregg Ln, Seguin, TX is $227,639 as of Jul 14, 2026. The likely range is $208,071 to $247,207. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 521 Gregg Ln, Seguin, TX last sell?

521 Gregg Ln, Seguin, TX last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 521 Gregg Ln, Seguin, TX?

521 Gregg Ln, Seguin, TX has 1,560 square feet of living space and a 0.50-acre lot.

When was 521 Gregg Ln, Seguin, TX built?

521 Gregg Ln, Seguin, TX was built in 1991, making it 35 years old. The building has 1 story.

What schools serve 521 Gregg Ln, Seguin, TX?

521 Gregg Ln, Seguin, TX is assigned to Jim Barnes Middle School (middle), rated D-; Koennecke Elementary School (elementary), rated B-; Seguin High School (high), rated D+. All sit in Seguin Independent School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 521 Gregg Ln, Seguin, TX compare to other homes in Seguin 78155?

Among the 26,236 homes in Seguin 78155, it is worth more than 32% of them ($227,639 against a typical $269,222), its price per square foot is higher than 36% of them ($146 against a typical $158), it is bigger than 44% of them (1,560 ft² against a typical 1,627 ft²), its lot is bigger than 70% of them (0.5 ac against a typical 0.24 ac) and it is newer than 37% of them (1991 against a typical 2000). Measured against all of Guadalupe County, it is worth more than 16% 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 521 Gregg Ln, Seguin, TX?

The 2025 property tax bill for 521 Gregg Ln, Seguin, TX was $260. The county assessed it at $131,235.

More homes on Gregg Ln

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More homes in Seguin 78155

Assigned schools

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