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Single Family ResidenceResidential
$341,398$223 / 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 95How 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 Aug 7, 2012

8S821 JOHN ST

BIG ROCK, IL 60511
3
Beds
2
Baths
1,532 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.
0.57 ac
Lot SizeThe size of the land the home sits on, from county records.
1969
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$341K
$323K low$360K 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 · Aug 7, 2012

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$6,520 (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.$118,653 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$29,917
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$88,736
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$109,752
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$356,101

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyKANE
Lot (acres)The size of the land the home sits on, from county records.0.57
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
FireplaceWhether the home has a fireplace, and what kind.Yes
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.Pool W/Hot Tub/Spa

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
Hinckley-Big Rock Middle SchoolB
Middle · Grades 5–8 · 3.1 mi
H
Hinckley-Big Rock High SchoolC
High · Grades 9–12 · 7.2 mi
E
Hinckley-Big Rock Elementary SchoolC+
Elementary · Grades PK–4 · 8.0 mi

District: Hinckley-Big Rock Community Unit School District 429

Neighborhood · ZIP 60511These 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.101
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.84
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.54

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.21%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.4.0%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.8%
PopulationHow many people live in this area.1,680
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.55 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$106,430
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$140,720
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

8s821 John 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.

  • Costs more per square foot than 75% of homes in Big Rock 60511
  • Smaller than 77% of homes in Big Rock 60511
  • Has a bigger lot than 84% of homes in Kane County
  • Older than 65% of homes in Kane County

What homes are worth in Big Rock 60511

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

This home
$223K$892K

This home is worth more than 42% of homes in Big Rock 60511.

How it measures up in Big Rock 60511

The dot is this home. The mark in the middle is the typical home in Big Rock 60511.

Estimated value$341,398
CheaperTypical $360,201Pricier

Pricier than 42% of homes nearby

Price per ft²$223
CheaperTypical $190Pricier

Pricier than 75% of homes nearby

Living area1,532 ft²
SmallerTypical 1,953 ft²Bigger

Bigger than 23% of homes nearby

Lot size0.57 ac
SmallerTypical 1.06 acBigger

Bigger than 27% of homes nearby

Year built1969
OlderTypical 1974Newer

Newer than 39% of homes nearby

How 8s821 John St ranks against every home in each area.
MeasureThis homeBig Rock 60511Kane County
Estimated valuepricier than$341,39842% of homes41% of homes
Price per ft²pricier than$22375% of homes56% of homes
Living areabigger than1,532 ft²23% of homes38% of homes
Lot sizebigger than0.57 ac27% of homes84% of homes
Year builtnewer than196939% of homes35% of homes

About 8s821 John St

How much is 8s821 John St, Big Rock, IL worth?

The TopHap Estimate for 8s821 John St, Big Rock, IL is $341,398 as of Oct 21, 2026. The likely range is $322,798 to $359,998. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 8s821 John St, Big Rock, IL last sell?

8s821 John St, Big Rock, IL last sold on Aug 7, 2012 for $200,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 8s821 John St, Big Rock, IL?

8s821 John St, Big Rock, IL has 3 bedrooms, 2 bathrooms, 1,532 square feet of living space and a 0.57-acre lot.

When was 8s821 John St, Big Rock, IL built?

8s821 John St, Big Rock, IL was built in 1969, making it 57 years old. The building has 1 story.

What schools serve 8s821 John St, Big Rock, IL?

8s821 John St, Big Rock, IL is assigned to Hinckley-Big Rock Middle School (middle), rated B; Hinckley-Big Rock High School (high), rated C; Hinckley-Big Rock Elementary School (elementary), rated C+. All sit in Hinckley-Big Rock Community Unit School District 429. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 8s821 John St, Big Rock, IL compare to other homes in Big Rock 60511?

Among the 700 homes in Big Rock 60511, it is worth more than 42% of them ($341,398 against a typical $360,201), its price per square foot is higher than 75% of them ($223 against a typical $190), it is bigger than 23% of them (1,532 ft² against a typical 1,953 ft²), its lot is bigger than 27% of them (0.57 ac against a typical 1.06 ac) and it is newer than 39% of them (1969 against a typical 1974). Measured against all of Kane County, it is worth more than 41% 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 8s821 John St, Big Rock, IL?

The 2025 property tax bill for 8s821 John St, Big Rock, IL was $6,520. The county assessed it at $118,653.

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