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Single Family ResidenceResidential
$298,069$176 / 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 Sep 24, 2026
Last sold for $87,125 on Jan 7, 2002

505 ROBERT DR

O FALLON, MO 63366
4
Beds
1.5
Baths
1,691 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.
0.56 ac
Lot SizeThe size of the land the home sits on, from county records.
1961
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.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$298K
$283K low$313K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$87,125 · Jan 7, 2002

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$4,247 (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.$48,164 (2026)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$45,268
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$253,494

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.Ranch
CountyST. CHARLES
Lot (acres)The size of the land the home sits on, from county records.0.56
RoofThe main material covering the roof, such as asphalt shingle or tile.Wood Shingle
HeatingThe type of heating system in the home.Hot Water
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.No
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Porch · 40 ft²

Transaction History(5)

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
Mount Hope Elementary SchoolA-
Elementary · Grades KG–5 · 0.6 mi
M
Fort Zumwalt North Middle SchoolA
Middle · Grades 6–8 · 2.9 mi
H
Fort Zumwalt North High SchoolA+
High · Grades 9–12 · 3.8 mi

District: Fort Zumwalt R-Ii School District

Neighborhood · ZIP 63366These 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.86
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.75
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.95

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.97%
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.5.6%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.0%
PopulationHow many people live in this area.53,503
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.756 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$93,639
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$109,885
Average tempThe average temperature here across a full year.55°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.57%

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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

505 Robert Dr 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 73% of homes in St. Charles County
  • Has a bigger lot than 89% of homes in O Fallon 63366
  • Older than 93% of homes in O Fallon 63366

What homes are worth in O Fallon 63366

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

This home
$183K$749K

This home is worth more than 32% of homes in O Fallon 63366.

How it measures up in O Fallon 63366

The dot is this home. The mark in the middle is the typical home in O Fallon 63366.

Estimated value$298,069
CheaperTypical $349,666Pricier

Pricier than 32% of homes nearby

Price per ft²$176
CheaperTypical $188Pricier

Pricier than 41% of homes nearby

Living area1,691 ft²
SmallerTypical 1,838 ft²Bigger

Bigger than 42% of homes nearby

Lot size0.56 ac
SmallerTypical 0.22 acBigger

Bigger than 89% of homes nearby

Year built1961
OlderTypical 1999Newer

Newer than 7% of homes nearby

How 505 Robert Dr ranks against every home in each area.
MeasureThis homeO Fallon 63366St. Charles County
Estimated valuepricier than$298,06932% of homes27% of homes
Price per ft²pricier than$17641% of homes43% of homes
Living areabigger than1,691 ft²42% of homes37% of homes
Lot sizebigger than0.56 ac89% of homes89% of homes
Year builtnewer than19617% of homes7% of homes

About 505 Robert Dr

How much is 505 Robert Dr, O Fallon, MO worth?

The TopHap Estimate for 505 Robert Dr, O Fallon, MO is $298,069 as of Sep 24, 2026. The likely range is $283,346 to $312,792. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 505 Robert Dr, O Fallon, MO last sell?

505 Robert Dr, O Fallon, MO last sold on Jan 7, 2002 for $87,125, according to the county's recorded deed.

How big is 505 Robert Dr, O Fallon, MO?

505 Robert Dr, O Fallon, MO has 4 bedrooms, 1.5 bathrooms, 1,691 square feet of living space and a 0.56-acre lot.

When was 505 Robert Dr, O Fallon, MO built?

505 Robert Dr, O Fallon, MO was built in 1961, making it 65 years old. It is a ranch home. The building has 1 story.

What schools serve 505 Robert Dr, O Fallon, MO?

505 Robert Dr, O Fallon, MO is assigned to Mount Hope Elementary School (elementary), rated A-; Fort Zumwalt North Middle School (middle), rated A; Fort Zumwalt North High School (high), rated A+. All sit in Fort Zumwalt R-Ii School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 505 Robert Dr, O Fallon, MO compare to other homes in O Fallon 63366?

Among the 17,886 homes in O Fallon 63366, it is worth more than 32% of them ($298,069 against a typical $349,666), its price per square foot is higher than 41% of them ($176 against a typical $188), it is bigger than 42% of them (1,691 ft² against a typical 1,838 ft²), its lot is bigger than 89% of them (0.56 ac against a typical 0.22 ac) and it is newer than 7% of them (1961 against a typical 1999). Measured against all of St. Charles County, it is worth more than 27% 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 505 Robert Dr, O Fallon, MO?

The 2025 property tax bill for 505 Robert Dr, O Fallon, MO was $4,247. The county assessed it at $48,164.

More homes on Robert Dr

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