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Single Family ResidenceResidential
$588,148$284 / 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 92How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Sep 24, 2026

11618 IOWA COLONY BLVD

ROSHARON, TX 77583
1
Baths
2,068 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.
7 ac
Lot SizeThe size of the land the home sits on, from county records.
1996
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
5
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$588K
$543K low$633K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,830 (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.$588,787 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$388,080
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$237,920
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$423,661
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$626,000

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.60
50
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
47
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
96
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
61
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
50
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.14 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.7.00
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
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Detached
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 · 227 ft²

Transaction History(2)

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 · 3.3 mi
E
Nichols Mock Elementary SchoolC+
Elementary · Grades PK–5 · 10.3 mi
H
Iowa Colony High SchoolC
High · Grades 9–12 · 10.3 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%

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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

11618 Iowa Colony Blvd 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 95% of homes in Rosharon 77583
  • Costs more per square foot than 98% of homes in Rosharon 77583
  • Among the largest lots in Rosharon 77583
  • Older than 91% 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
$183K$715K

This home is worth more than 95% 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$588,148
CheaperTypical $314,311Pricier

Pricier than 95% of homes nearby

Price per ft²$284
CheaperTypical $151Pricier

Pricier than 98% of homes nearby

Living area2,068 ft²
SmallerTypical 2,044 ft²Bigger

Bigger than 52% of homes nearby

Lot size7 ac
SmallerTypical 0.17 acBigger

Bigger than almost all homes nearby

Year built1996
OlderTypical 2018Newer

Newer than 9% of homes nearby

How 11618 Iowa Colony Blvd ranks against every home in each area.
MeasureThis homeRosharon 77583Brazoria County
Estimated valuepricier than$588,14895% of homes93% of homes
Price per ft²pricier than$28498% of homes96% of homes
Living areabigger than2,068 ft²52% of homes56% of homes
Lot sizebigger than7 acalmost all homes98% of homes
Year builtnewer than19969% of homes43% of homes

About 11618 Iowa Colony Blvd

How much is 11618 Iowa Colony Blvd, Rosharon, TX worth?

The TopHap Estimate for 11618 Iowa Colony Blvd, Rosharon, TX is $588,148 as of Sep 24, 2026. The likely range is $543,035 to $633,261. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 11618 Iowa Colony Blvd, Rosharon, TX last sell?

11618 Iowa Colony Blvd, Rosharon, TX last sold on Apr 18, 2016, according to the county's recorded deed.

How big is 11618 Iowa Colony Blvd, Rosharon, TX?

11618 Iowa Colony Blvd, Rosharon, TX has 1 bathrooms, 2,068 square feet of living space and a 7.00-acre lot.

When was 11618 Iowa Colony Blvd, Rosharon, TX built?

11618 Iowa Colony Blvd, Rosharon, TX was built in 1996, making it 30 years old. The building has 1 story.

What schools serve 11618 Iowa Colony Blvd, Rosharon, TX?

11618 Iowa Colony Blvd, 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 C. All sit in Alvin Independent School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 11618 Iowa Colony Blvd, Rosharon, TX compare to other homes in Rosharon 77583?

Among the 22,108 homes in Rosharon 77583, it is worth more than 95% of them ($588,148 against a typical $314,311), its price per square foot is higher than 98% of them ($284 against a typical $151), it is bigger than 52% of them (2,068 ft² against a typical 2,044 ft²), its lot is bigger than almost all of them (7 ac against a typical 0.17 ac) and it is newer than 9% of them (1996 against a typical 2018). Measured against all of Brazoria County, it is worth more than 93% 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 11618 Iowa Colony Blvd, Rosharon, TX?

The 2024 property tax bill for 11618 Iowa Colony Blvd, Rosharon, TX was $4,830. The county assessed it at $588,787.

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