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Single Family ResidenceResidential
$267,500$233 / 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 89How 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
Last sold for $200,000 on May 13, 2026

523 ALTON CT

CAROL STREAM, IL 60188
3
Beds
1
Baths
1,146 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.
1,742 ft²
Lot SizeThe size of the land the home sits on, from county records.
1977
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
6
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.
1
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$268K
$237K low$298K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$200,000 · May 13, 2026

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$5,005 (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.$68,471 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$15,144
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$53,327
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$62,991
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$205,413

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyDUPAGE
Lot (acres)The size of the land the home sits on, from county records.0.04
RoofThe main material covering the roof, such as asphalt shingle or tile.Asphalt
HeatingThe type of heating system in the home.Central
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

Transaction History(6)

Sales and refinances filed with the county for this home. Not every transfer is a normal sale, so check the type before comparing prices.

Foreclosure Filings(1)

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

E
Roy DeShane Elementary SchoolB+
Elementary · Grades KG–5 · 0.8 mi
H
Glenbard North High SchoolB-
High · Grades 9–12 · 1.0 mi
M
Stratford Middle SchoolB-
Middle · Grades 6–8 · 2.9 mi

District: Community Consolidated School District 93

Neighborhood · ZIP 60188These 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.81
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.117
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.48

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.96%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.29%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.8.9%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.4%
PopulationHow many people live in this area.41,975
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.4,139 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$102,521
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$122,788
Average tempThe average temperature here across a full year.49°F
Annual precipHow much rain and melted snow falls here in a typical year.37 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.54%

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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

523 Alton Ct 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 89% of homes in Carol Stream 60188
  • Costs more per square foot than 66% of homes in Carol Stream 60188
  • Smaller than 88% of homes in Carol Stream 60188
  • Has a smaller lot than 98% of homes in Carol Stream 60188
  • Older than 82% of homes in Carol Stream 60188

What homes are worth in Carol Stream 60188

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

This home
$171K$743K

This home is worth more than 11% of homes in Carol Stream 60188.

How it measures up in Carol Stream 60188

The dot is this home. The mark in the middle is the typical home in Carol Stream 60188.

Estimated value$267,500
CheaperTypical $397,765Pricier

Pricier than 11% of homes nearby

Price per ft²$233
CheaperTypical $221Pricier

Pricier than 66% of homes nearby

Living area1,146 ft²
SmallerTypical 1,773 ft²Bigger

Bigger than 12% of homes nearby

Lot size1,742 ft²
SmallerTypical 0.22 acBigger

Bigger than 2% of homes nearby

Year built1977
OlderTypical 1987Newer

Newer than 18% of homes nearby

How 523 Alton Ct ranks against every home in each area.
MeasureThis homeCarol Stream 60188DuPage County
Estimated valuepricier than$267,50011% of homes11% of homes
Price per ft²pricier than$23366% of homes40% of homes
Living areabigger than1,146 ft²12% of homes16% of homes
Lot sizebigger than1,742 ft²2% of homes2% of homes
Year builtnewer than197718% of homes50% of homes

About 523 Alton Ct

How much is 523 Alton Ct, Carol Stream, IL worth?

The TopHap Estimate for 523 Alton Ct, Carol Stream, IL is $267,500 as of Oct 21, 2026. The likely range is $236,960 to $298,040. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 523 Alton Ct, Carol Stream, IL last sell?

523 Alton Ct, Carol Stream, IL last sold on May 13, 2026 for $200,000, according to the county's recorded deed. TopHap holds 4 recorded sales for this parcel.

How big is 523 Alton Ct, Carol Stream, IL?

523 Alton Ct, Carol Stream, IL has 3 bedrooms, 1 bathrooms, 1,146 square feet of living space and a 0.04-acre lot.

When was 523 Alton Ct, Carol Stream, IL built?

523 Alton Ct, Carol Stream, IL was built in 1977, making it 49 years old. The building has 2 stories.

What schools serve 523 Alton Ct, Carol Stream, IL?

523 Alton Ct, Carol Stream, IL is assigned to Roy DeShane Elementary School (elementary), rated B+; Glenbard North High School (high), rated B-; Stratford Middle School (middle), rated B-. All sit in Community Consolidated School District 93. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 523 Alton Ct, Carol Stream, IL compare to other homes in Carol Stream 60188?

Among the 11,585 homes in Carol Stream 60188, it is worth more than 11% of them ($267,500 against a typical $397,765), its price per square foot is higher than 66% of them ($233 against a typical $221), it is bigger than 12% of them (1,146 ft² against a typical 1,773 ft²), its lot is bigger than 2% of them (1,742 ft² against a typical 0.22 ac) and it is newer than 18% of them (1977 against a typical 1987). Measured against all of DuPage County, it is worth more than 11% 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 523 Alton Ct, Carol Stream, IL?

The 2025 property tax bill for 523 Alton Ct, Carol Stream, IL was $5,005. The county assessed it at $68,471.

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