Skip to content
Skip to content
TopHapOpen in map
Single Family ResidenceResidential
$290,925$166 / 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 Aug 30, 2026
Last sold for $143,000 on Jul 22, 2005

623 AVON PL

SAINT CHARLES, MO 63303
3
Beds
2
Baths
1,748 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.
0.98 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.
2
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

$291K
$274K low$308K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$143,000 · Jul 22, 2005

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$2,563 (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.$42,527 (2026)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$42,527
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$223,825

Climate Risk

Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.33 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.6%
FEMA Flood ZoneFEMA's flood zone for this address. Zones starting with A or V are high risk, and lenders usually require flood insurance there.minimal

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.Bi-Level
CountyST. CHARLES
Lot (acres)The size of the land the home sits on, from county records.0.98
RoofThe main material covering the roof, such as asphalt shingle or tile.Asphalt
HeatingThe type of heating system in the home.Forced Air With Air Conditioning
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.Patio · 248 ft²Porch · 200 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.

Foreclosure Filings(2)

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

M
Barnwell Middle SchoolA
Middle · Grades 6–8 · 0.7 mi
E
Becky-David Elementary SchoolC+
Elementary · Grades PK–5 · 0.8 mi
H
Francis Howell North High SchoolA-
High · Grades 9–12 · 1.8 mi

District: Francis Howell R-Iii School District

Neighborhood · ZIP 63303These 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.109
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.79
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.120

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.96%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.31%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.4.1%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.1%
PopulationHow many people live in this area.49,298
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.3,208 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$97,943
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$126,979
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%

Owner Tools

Do you own this home?
Claim this home

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

623 Avon 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 less than 75% of homes in St. Charles County
  • Costs less per square foot than 66% of homes in St. Charles County
  • Has a bigger lot than 96% of homes in Saint Charles 63303
  • Older than 89% of homes in Saint Charles 63303

What homes are worth in Saint Charles 63303

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

This home
$135K$738K

This home is worth more than 31% of homes in Saint Charles 63303.

How it measures up in Saint Charles 63303

The dot is this home. The mark in the middle is the typical home in Saint Charles 63303.

Estimated value$290,925
CheaperTypical $354,785Pricier

Pricier than 31% of homes nearby

Price per ft²$166
CheaperTypical $172Pricier

Pricier than 44% of homes nearby

Living area1,748 ft²
SmallerTypical 2,026 ft²Bigger

Bigger than 38% of homes nearby

Lot size0.98 ac
SmallerTypical 0.22 acBigger

Bigger than 96% of homes nearby

Year built1969
OlderTypical 1988Newer

Newer than 11% of homes nearby

How 623 Avon Pl ranks against every home in each area.
MeasureThis homeSaint Charles 63303St. Charles County
Estimated valuepricier than$290,92531% of homes25% of homes
Price per ft²pricier than$16644% of homes34% of homes
Living areabigger than1,748 ft²38% of homes40% of homes
Lot sizebigger than0.98 ac96% of homes92% of homes
Year builtnewer than196911% of homes12% of homes

About 623 Avon Pl

How much is 623 Avon Pl, Saint Charles, MO worth?

The TopHap Estimate for 623 Avon Pl, Saint Charles, MO is $290,925 as of Aug 30, 2026. The likely range is $274,073 to $307,777. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 623 Avon Pl, Saint Charles, MO last sell?

623 Avon Pl, Saint Charles, MO last sold on Jul 22, 2005 for $143,000, according to the county's recorded deed.

How big is 623 Avon Pl, Saint Charles, MO?

623 Avon Pl, Saint Charles, MO has 3 bedrooms, 2 bathrooms, 1,748 square feet of living space and a 0.98-acre lot.

When was 623 Avon Pl, Saint Charles, MO built?

623 Avon Pl, Saint Charles, MO was built in 1969, making it 57 years old. It is a bi-level home. The building has 2 stories.

What schools serve 623 Avon Pl, Saint Charles, MO?

623 Avon Pl, Saint Charles, MO is assigned to Barnwell Middle School (middle), rated A; Becky-David Elementary School (elementary), rated C+; Francis Howell North High School (high), rated A-. All sit in Francis Howell R-Iii School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 623 Avon Pl, Saint Charles, MO compare to other homes in Saint Charles 63303?

Among the 16,151 homes in Saint Charles 63303, it is worth more than 31% of them ($290,925 against a typical $354,785), its price per square foot is higher than 44% of them ($166 against a typical $172), it is bigger than 38% of them (1,748 ft² against a typical 2,026 ft²), its lot is bigger than 96% of them (0.98 ac against a typical 0.22 ac) and it is newer than 11% of them (1969 against a typical 1988). Measured against all of St. Charles County, it is worth more than 25% 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 623 Avon Pl, Saint Charles, MO?

The 2025 property tax bill for 623 Avon Pl, Saint Charles, MO was $2,563. The county assessed it at $42,527.

More homes on Avon Pl

Closest homes

More homes in Saint Charles 63303

Assigned schools

Explore the area

See this home in context

Open 623 Avon Pl on TopHap’s interactive map to compare it against every sale nearby, overlay school zones and flood risk, and run a CMA.

Open in map
A flyover of TopHap's photorealistic 3D map, with recorded sale prices pinned to homes
Search any address, city, zip, or county…3D$1.9M$6.25MOpen in map