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Single Family ResidenceResidential
$383,677$191 / 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 94How 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

12508 COUNTY ROAD 421

ROSHARON, TX 77583
3
Baths
2,008 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.
2 ac
Lot SizeThe size of the land the home sits on, from county records.
1993
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.

Valuation

$384K
$359K low$408K 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.$110,077
Est. Lendable EquityThe part of the owner's equity a lender would typically let them borrow against — about 80% of their equity.$88,062
Loan-to-ValueHow much is still owed on the home compared to what it is worth. 80% means loans equal 80% of our estimate, so it shifts when the estimate does.69%
1st MortgageA loan still believed to be open on this home, in the order lenders get repaid. The first position is paid back before the second.$273,600
LOANDEPOT.COM LLC · recorded Sep 21, 2018

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,528 (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.$360,000 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$104,500
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$255,500
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$356,069
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$360,000

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.13 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%

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
CountyBrazoria
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.2000
Lot (acres)The size of the land the home sits on, from county records.2.00
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.Electric
CoolingThe type of cooling or air conditioning in the home.Central
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 · 1,420 ft²

Transaction History(4)

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
Iowa Colony Junior High SchoolB-
Middle · Grades 6–8 · 4.1 mi
E
Nichols Mock Elementary SchoolC+
Elementary · Grades PK–5 · 12.5 mi
H
Iowa Colony High SchoolB+
High · Grades 9–12 · 12.5 mi

District: Alvin Independent School District

Neighborhood · ZIP 77583These 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.72
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.86
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.20

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.93%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.20%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.5.0%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.3%
PopulationHow many people live in this area.47,650
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.298 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$107,106
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$133,090
Average tempThe average temperature here across a full year.69°F
Annual precipHow much rain and melted snow falls here in a typical year.52 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.58%

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

12508 County Road 421 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 73% of homes in Rosharon 77583
  • Costs more per square foot than 88% of homes in Rosharon 77583
  • Has a bigger lot than 93% of homes in Rosharon 77583
  • Older than 93% of homes in Rosharon 77583

What homes are worth in Rosharon 77583

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

This home
$184K$755K

This home is worth more than 73% of homes in Rosharon 77583.

How it measures up in Rosharon 77583

The dot is this home. The mark in the middle is the typical home in Rosharon 77583.

Estimated value$383,677
CheaperTypical $314,001Pricier

Pricier than 73% of homes nearby

Price per ft²$191
CheaperTypical $153Pricier

Pricier than 88% of homes nearby

Living area2,008 ft²
SmallerTypical 2,042 ft²Bigger

Bigger than 49% of homes nearby

Lot size2 ac
SmallerTypical 0.17 acBigger

Bigger than 93% of homes nearby

Year built1993
OlderTypical 2018Newer

Newer than 7% of homes nearby

How 12508 County Road 421 ranks against every home in each area.
MeasureThis homeRosharon 77583Brazoria County
Estimated valuepricier than$383,67773% of homes65% of homes
Price per ft²pricier than$19188% of homes81% of homes
Living areabigger than2,008 ft²49% of homes54% of homes
Lot sizebigger than2 ac93% of homes91% of homes
Year builtnewer than19937% of homes39% of homes

About 12508 County Road 421

How much is 12508 County Road 421, Rosharon, TX worth?

The TopHap Estimate for 12508 County Road 421, Rosharon, TX is $383,677 as of Jul 14, 2026. The likely range is $359,226 to $408,128. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 12508 County Road 421, Rosharon, TX last sell?

12508 County Road 421, Rosharon, TX last sold on Sep 21, 2018, according to the county's recorded deed.

How big is 12508 County Road 421, Rosharon, TX?

12508 County Road 421, Rosharon, TX has 3 bathrooms, 2,008 square feet of living space and a 2.00-acre lot.

When was 12508 County Road 421, Rosharon, TX built?

12508 County Road 421, Rosharon, TX was built in 1993, making it 33 years old. The building has 1 story.

What schools serve 12508 County Road 421, Rosharon, TX?

12508 County Road 421, Rosharon, TX is assigned to Iowa Colony Junior High School (middle), rated B-; Nichols Mock Elementary School (elementary), rated C+; Iowa Colony High School (high), rated B+. All sit in Alvin Independent School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 12508 County Road 421, Rosharon, TX compare to other homes in Rosharon 77583?

Among the 22,137 homes in Rosharon 77583, it is worth more than 73% of them ($383,677 against a typical $314,001), its price per square foot is higher than 88% of them ($191 against a typical $153), it is bigger than 49% of them (2,008 ft² against a typical 2,042 ft²), its lot is bigger than 93% of them (2 ac against a typical 0.17 ac) and it is newer than 7% of them (1993 against a typical 2018). Measured against all of Brazoria County, it is worth more than 65% 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 12508 County Road 421, Rosharon, TX?

The 2024 property tax bill for 12508 County Road 421, Rosharon, TX was $4,528. The county assessed it at $360,000.

Closest homes

More homes in Rosharon 77583

Assigned schools

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