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Single Family ResidenceResidential
$502,034$323 / 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 94How 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
Last sold for $272,000 on Apr 12, 2004

820 GREYSTONE PL

O FALLON, IL 62269
4
Baths
1,552 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.
0.4 ac
Lot SizeThe size of the land the home sits on, from county records.
2004
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.

Valuation

$502K
$474K low$530K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$272,000 · Apr 12, 2004

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$11,126 (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.$160,346 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$25,686
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$134,660
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$144,419
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$481,038

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.43
11
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
31
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
82
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
69
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
24
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.6 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.6%

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
CountyST. CLAIR
Lot (acres)The size of the land the home sits on, from county records.0.40
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
CoolingThe type of cooling or air conditioning in the home.Central
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.Mixed
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.Patio · 168 ft²Porch · 468 ft²

Transaction History(3)

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
Moye Elementary SchoolA
Elementary · Grades EE–5 · 0.3 mi
M
Carriel Junior High SchoolB+
Middle · Grades 6–8 · 1.2 mi
H
O'Fallon Township High SchoolB+
High · Grades 9–12 · 2.5 mi

District: O'Fallon Community Consolidated School District 90

Neighborhood · ZIP 62269These 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.66
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.92
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.163

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.95%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.27%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.3.7%
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.33,610
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.1,140 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$105,165
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$121,936
Average tempThe average temperature here across a full year.56°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.59%

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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

820 Greystone Pl 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 96% of homes in St. Clair County
  • Costs more per square foot than 93% of homes in St. Clair County
  • Bigger than 75% of homes in St. Clair County
  • Has a bigger lot than 75% of homes in O Fallon 62269
  • Newer than 88% of homes in St. Clair County

What homes are worth in O Fallon 62269

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

This home
$125K$765K

This home is worth more than 87% of homes in O Fallon 62269.

How it measures up in O Fallon 62269

The dot is this home. The mark in the middle is the typical home in O Fallon 62269.

Estimated value$502,034
CheaperTypical $345,175Pricier

Pricier than 87% of homes nearby

Price per ft²$323
CheaperTypical $240Pricier

Pricier than 76% of homes nearby

Living area1,552 ft²
SmallerTypical 1,280 ft²Bigger

Bigger than 66% of homes nearby

Lot size0.4 ac
SmallerTypical 0.28 acBigger

Bigger than 75% of homes nearby

Year built2004
OlderTypical 1993Newer

Newer than 78% of homes nearby

How 820 Greystone Pl ranks against every home in each area.
MeasureThis homeO Fallon 62269St. Clair County
Estimated valuepricier than$502,03487% of homes96% of homes
Price per ft²pricier than$32376% of homes93% of homes
Living areabigger than1,552 ft²66% of homes75% of homes
Lot sizebigger than0.4 ac75% of homes75% of homes
Year builtnewer than200478% of homes88% of homes

About 820 Greystone Pl

How much is 820 Greystone Pl, O Fallon, IL worth?

The TopHap Estimate for 820 Greystone Pl, O Fallon, IL is $502,034 as of Sep 24, 2026. The likely range is $474,324 to $529,744. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 820 Greystone Pl, O Fallon, IL last sell?

820 Greystone Pl, O Fallon, IL last sold on Apr 12, 2004 for $272,000, according to the county's recorded deed.

How big is 820 Greystone Pl, O Fallon, IL?

820 Greystone Pl, O Fallon, IL has 4 bathrooms, 1,552 square feet of living space and a 0.40-acre lot.

When was 820 Greystone Pl, O Fallon, IL built?

820 Greystone Pl, O Fallon, IL was built in 2004, making it 22 years old. The building has 2 stories.

What schools serve 820 Greystone Pl, O Fallon, IL?

820 Greystone Pl, O Fallon, IL is assigned to Moye Elementary School (elementary), rated A; Carriel Junior High School (middle), rated B+; O'Fallon Township High School (high), rated B+. All sit in O'Fallon Community Consolidated School District 90. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 820 Greystone Pl, O Fallon, IL compare to other homes in O Fallon 62269?

Among the 12,271 homes in O Fallon 62269, it is worth more than 87% of them ($502,034 against a typical $345,175), its price per square foot is higher than 76% of them ($323 against a typical $240), it is bigger than 66% of them (1,552 ft² against a typical 1,280 ft²), its lot is bigger than 75% of them (0.4 ac against a typical 0.28 ac) and it is newer than 78% of them (2004 against a typical 1993). Measured against all of St. Clair County, it is worth more than 96% 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 820 Greystone Pl, O Fallon, IL?

The 2025 property tax bill for 820 Greystone Pl, O Fallon, IL was $11,126. The county assessed it at $160,346.

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