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Single Family ResidenceResidential
$180,744$160 / 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 85How 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 $181,000 on Sep 18, 2025

20100 KEYSTONE AVE

MATTESON, IL 60443
3
Beds
1
Baths
1,128 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.
0.55 ac
Lot SizeThe size of the land the home sits on, from county records.
1951
Year BuiltThe year the home was originally built, according to county records.
1
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

$181K
$154K low$208K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$181,000 · Sep 18, 2025

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$2,300 (2023)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$12,000 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$3,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$9,000
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$12,000
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$120,000

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.37
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
1
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
71
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
73
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
40
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.

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
StyleThe architectural style of the home, such as ranch or colonial.Bungalow
CountyCOOK
Lot (acres)The size of the land the home sits on, from county records.0.55
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
FoundationWhat the home is built on, such as a concrete slab, a crawl space, or a basement.No Foundation
RoofThe main material covering the roof, such as asphalt shingle or tile.Asphalt
HeatingThe type of heating system in the home.Yes
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, Attached
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(1)

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.

H
Rich Township High SchoolF
High · Grades 9–12 · 0.6 mi
E
Arcadia Elementary SchoolC-
Elementary · Grades KG–4 · 1.0 mi
M
O W Huth Middle SchoolD+
Middle · Grades 7–8 · 1.6 mi

District: Matteson Elementary School District 162

Neighborhood · ZIP 60443These 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.69
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.101
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.42

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.94%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.22%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.11%
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.21,653
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,584 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$93,069
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$118,762
Average tempThe average temperature here across a full year.49°F
Annual precipHow much rain and melted snow falls here in a typical year.38 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

20100 Keystone Ave 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 85% of homes in Matteson 60443
  • Costs less per square foot than 83% of homes in Cook County
  • Smaller than 88% of homes in Matteson 60443
  • Has a bigger lot than 87% of homes in Matteson 60443
  • Older than 94% of homes in Matteson 60443

What homes are worth in Matteson 60443

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

This home
$117K$460K

This home is worth more than 15% of homes in Matteson 60443.

How it measures up in Matteson 60443

The dot is this home. The mark in the middle is the typical home in Matteson 60443.

Estimated value$180,744
CheaperTypical $254,300Pricier

Pricier than 15% of homes nearby

Price per ft²$160
CheaperTypical $145Pricier

Pricier than 67% of homes nearby

Living area1,128 ft²
SmallerTypical 1,750 ft²Bigger

Bigger than 12% of homes nearby

Lot size0.55 ac
SmallerTypical 0.21 acBigger

Bigger than 87% of homes nearby

Year built1951
OlderTypical 1985Newer

Newer than 6% of homes nearby

How 20100 Keystone Ave ranks against every home in each area.
MeasureThis homeMatteson 60443Cook County
Estimated valuepricier than$180,74415% of homes15% of homes
Price per ft²pricier than$16067% of homes17% of homes
Living areabigger than1,128 ft²12% of homes25% of homes
Lot sizebigger than0.55 ac87% of homes82% of homes
Year builtnewer than19516% of homes36% of homes

About 20100 Keystone Ave

How much is 20100 Keystone Ave, Matteson, IL worth?

The TopHap Estimate for 20100 Keystone Ave, Matteson, IL is $180,744 as of Oct 21, 2026. The likely range is $153,644 to $207,844. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 20100 Keystone Ave, Matteson, IL last sell?

20100 Keystone Ave, Matteson, IL last sold on Sep 18, 2025 for $181,000, according to the county's recorded deed.

How big is 20100 Keystone Ave, Matteson, IL?

20100 Keystone Ave, Matteson, IL has 3 bedrooms, 1 bathrooms, 1,128 square feet of living space and a 0.55-acre lot.

When was 20100 Keystone Ave, Matteson, IL built?

20100 Keystone Ave, Matteson, IL was built in 1951, making it 75 years old. It is a bungalow home. The building has 1 story.

What schools serve 20100 Keystone Ave, Matteson, IL?

20100 Keystone Ave, Matteson, IL is assigned to Rich Township High School (high), rated F; Arcadia Elementary School (elementary), rated C-; O W Huth Middle School (middle), rated D+. All sit in Matteson Elementary School District 162. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 20100 Keystone Ave, Matteson, IL compare to other homes in Matteson 60443?

Among the 6,569 homes in Matteson 60443, it is worth more than 15% of them ($180,744 against a typical $254,300), its price per square foot is higher than 67% of them ($160 against a typical $145), it is bigger than 12% of them (1,128 ft² against a typical 1,750 ft²), its lot is bigger than 87% of them (0.55 ac against a typical 0.21 ac) and it is newer than 6% of them (1951 against a typical 1985). Measured against all of Cook County, it is worth more than 15% 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 20100 Keystone Ave, Matteson, IL?

The 2023 property tax bill for 20100 Keystone Ave, Matteson, IL was $2,300. The county assessed it at $12,000.

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