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Single Family ResidenceResidential
$116,896$110 / 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 63How 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

421 S IRVING ST

ALTON, TX 78573
3
Beds
2
Baths
1,065 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.
0.19 ac
Lot SizeThe size of the land the home sits on, from county records.
1992
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.

Valuation

$117K
$74K low$160K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$677 (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.$66,001 (2026)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$60,001
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$92,909

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyHIDALGO
Effective Year BuiltAn adjusted build year that accounts for condition and major remodels. A big renovation can make a home count as newer than it is.2009
Lot (acres)The size of the land the home sits on, from county records.0.19
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
RoofThe main material covering the roof, such as asphalt shingle or tile.Composition Shingle
CoolingThe type of cooling or air conditioning in the home.Yes
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 · 84 ft²

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

E
Alton Elementary SchoolC-
Elementary · Grades EE–5 · 0.7 mi
M
Rafael Cantu Junior High SchoolD+
Middle · Grades 6–8 · 1.1 mi
H
Veterans Memorial High SchoolD
High · Grades 9–12 · 2.8 mi

District: Mission Consolidated Independent School District

Neighborhood · ZIP 78573These 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.79
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.88
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.11

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.91%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.12%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.21%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.9%
PopulationHow many people live in this area.44,921
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,194 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$51,533
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$74,354
Average tempThe average temperature here across a full year.74°F
Annual precipHow much rain and melted snow falls here in a typical year.23 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

421 S Irving St 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 90% of homes in Mission 78573
  • Costs less per square foot than 76% of homes in Mission 78573
  • Smaller than 82% of homes in Mission 78573
  • Older than 68% of homes in Mission 78573

What homes are worth in Mission 78573

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

This home
$87K$899K

This home is worth more than 10% of homes in Mission 78573.

How it measures up in Mission 78573

The dot is this home. The mark in the middle is the typical home in Mission 78573.

Estimated value$116,896
CheaperTypical $215,299Pricier

Pricier than 10% of homes nearby

Price per ft²$110
CheaperTypical $137Pricier

Pricier than 24% of homes nearby

Living area1,065 ft²
SmallerTypical 1,586 ft²Bigger

Bigger than 18% of homes nearby

Lot size0.19 ac
SmallerTypical 0.21 acBigger

Bigger than 45% of homes nearby

Year built1992
OlderTypical 2000Newer

Newer than 32% of homes nearby

How 421 S Irving St ranks against every home in each area.
MeasureThis homeAltonMission 78573Hidalgo County
Estimated valuepricier than$116,89614% of homes10% of homes16% of homes
Price per ft²pricier than$11027% of homes24% of homes28% of homes
Living areabigger than1,065 ft²19% of homes18% of homes24% of homes
Lot sizebigger than0.19 ac61% of homes45% of homes52% of homes
Year builtnewer than199233% of homes32% of homes39% of homes

About 421 S Irving St

How much is 421 S Irving St, Alton, TX worth?

The TopHap Estimate for 421 S Irving St, Alton, TX is $116,896 as of Oct 21, 2026. The likely range is $73,997 to $159,795. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 421 S Irving St, Alton, TX last sell?

421 S Irving St, Alton, TX last sold on Jan 1, 1900, according to the county's recorded deed.

How big is 421 S Irving St, Alton, TX?

421 S Irving St, Alton, TX has 3 bedrooms, 2 bathrooms, 1,065 square feet of living space and a 0.19-acre lot.

When was 421 S Irving St, Alton, TX built?

421 S Irving St, Alton, TX was built in 1992, making it 34 years old. The building has 1 story.

What schools serve 421 S Irving St, Alton, TX?

421 S Irving St, Alton, TX is assigned to Alton Elementary School (elementary), rated C-; Rafael Cantu Junior High School (middle), rated D+; Veterans Memorial High School (high), rated D. All sit in Mission Consolidated Independent School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 421 S Irving St, Alton, TX compare to other homes in Mission 78573?

Among the 12,186 homes in Mission 78573, it is worth more than 10% of them ($116,896 against a typical $215,299), its price per square foot is higher than 24% of them ($110 against a typical $137), it is bigger than 18% of them (1,065 ft² against a typical 1,586 ft²), its lot is bigger than 45% of them (0.19 ac against a typical 0.21 ac) and it is newer than 32% of them (1992 against a typical 2000). Measured against all of Hidalgo 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 421 S Irving St, Alton, TX?

The 2025 property tax bill for 421 S Irving St, Alton, TX was $677. The county assessed it at $66,001.

More homes on S Irving St

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