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Single Family ResidenceResidential
$359,176$274 / 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 Aug 30, 2026

923 W WILLIAM ST

CHAMPAIGN, IL 61821
2
Baths
1,310 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.
1932
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
1
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$359K
$319K low$399K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$8,966 (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.$113,820 (2024)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$24,350
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$89,470
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$103,660
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$341,460

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyChampaign
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.Shingle
HeatingThe type of heating system in the home.Central
CoolingThe type of cooling or air conditioning in the home.Yes
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, 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.Deck · 400 ft²

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.

E
South Side Elementary SchoolB
Elementary · Grades KG–5 · 0.3 mi
M
Edison Middle SchoolB-
Middle · Grades 6–8 · 0.7 mi
H
Central High SchoolC
High · Grades 9–12 · 0.8 mi

District: Champaign Community Unit School District 4

Neighborhood · ZIP 61821These 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.78
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 100.49

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.21%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.13%
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.31,352
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.3,528 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$74,699
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$92,842
Average tempThe average temperature here across a full year.52°F
Annual precipHow much rain and melted snow falls here in a typical year.40 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.56%

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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

923 W William 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.

  • Worth more than 93% of homes in Champaign 61821
  • Costs more per square foot than 93% of homes in Champaign 61821
  • Bigger than 65% of homes in Champaign 61821
  • Older than 90% of homes in Champaign 61821

What homes are worth in Champaign 61821

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

This home
$88K$536K

This home is worth more than 93% of homes in Champaign 61821.

How it measures up in Champaign 61821

The dot is this home. The mark in the middle is the typical home in Champaign 61821.

Estimated value$359,176
CheaperTypical $197,425Pricier

Pricier than 93% of homes nearby

Price per ft²$274
CheaperTypical $161Pricier

Pricier than 93% of homes nearby

Living area1,310 ft²
SmallerTypical 1,169 ft²Bigger

Bigger than 65% of homes nearby

Year built1932
OlderTypical 1961Newer

Newer than 10% of homes nearby

How 923 W William St ranks against every home in each area.
MeasureThis homeChampaign 61821Champaign County
Estimated valuepricier than$359,17693% of homes81% of homes
Price per ft²pricier than$27493% of homes91% of homes
Living areabigger than1,310 ft²65% of homes56% of homes
Year builtnewer than193210% of homes19% of homes

About 923 W William St

How much is 923 W William St, Champaign, IL worth?

The TopHap Estimate for 923 W William St, Champaign, IL is $359,176 as of Aug 30, 2026. The likely range is $319,069 to $399,283. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

How big is 923 W William St, Champaign, IL?

923 W William St, Champaign, IL has 2 bathrooms and 1,310 square feet of living space.

When was 923 W William St, Champaign, IL built?

923 W William St, Champaign, IL was built in 1932, making it 94 years old. The building has 1 story.

What schools serve 923 W William St, Champaign, IL?

923 W William St, Champaign, IL is assigned to South Side Elementary School (elementary), rated B; Edison Middle School (middle), rated B-; Central High School (high), rated C. All sit in Champaign Community Unit School District 4. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 923 W William St, Champaign, IL compare to other homes in Champaign 61821?

Among the 10,352 homes in Champaign 61821, it is worth more than 93% of them ($359,176 against a typical $197,425), its price per square foot is higher than 93% of them ($274 against a typical $161), it is bigger than 65% of them (1,310 ft² against a typical 1,169 ft²) and it is newer than 10% of them (1932 against a typical 1961). Measured against all of Champaign County, it is worth more than 81% 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 923 W William St, Champaign, IL?

The 2024 property tax bill for 923 W William St, Champaign, IL was $8,966. The county assessed it at $113,820.

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