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Single Family ResidenceResidential
$473,709$163 / 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 96How 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

18 HORIZON RIDGE CT

SAINT CHARLES, MO 63303
4
Beds
2.5
Baths
2,904 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.
0.33 ac
Lot SizeThe size of the land the home sits on, from county records.
2007
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
11
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.
3
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$474K
$454K low$493K high

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$5,278 (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.$91,866 (2026)
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$91,125
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$483,505

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.0.33
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 · 192 ft²Porch · 18 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
Harvest Ridge Elementary SchoolC-
Elementary · Grades KG–5 · 0.7 mi
H
Francis Howell North High SchoolA-
High · Grades 9–12 · 2.4 mi
M
Barnwell Middle SchoolA
Middle · Grades 6–8 · 2.9 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%

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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

18 Horizon Ridge Ct 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 83% of homes in Saint Charles 63303
  • Costs less per square foot than 69% of homes in St. Charles County
  • Bigger than 81% of homes in Saint Charles 63303
  • Has a bigger lot than 79% of homes in Saint Charles 63303
  • Newer than 91% 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$730K

This home is worth more than 83% 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$473,709
CheaperTypical $354,183Pricier

Pricier than 83% of homes nearby

Price per ft²$163
CheaperTypical $172Pricier

Pricier than 41% of homes nearby

Living area2,904 ft²
SmallerTypical 2,024 ft²Bigger

Bigger than 81% of homes nearby

Lot size0.33 ac
SmallerTypical 0.22 acBigger

Bigger than 79% of homes nearby

Year built2007
OlderTypical 1988Newer

Newer than 91% of homes nearby

How 18 Horizon Ridge Ct ranks against every home in each area.
MeasureThis homeSaint Charles 63303St. Charles County
Estimated valuepricier than$473,70983% of homes77% of homes
Price per ft²pricier than$16341% of homes31% of homes
Living areabigger than2,904 ft²81% of homes81% of homes
Lot sizebigger than0.33 ac79% of homes78% of homes
Year builtnewer than200791% of homes80% of homes

About 18 Horizon Ridge Ct

How much is 18 Horizon Ridge Ct, Saint Charles, MO worth?

The TopHap Estimate for 18 Horizon Ridge Ct, Saint Charles, MO is $473,709 as of Aug 30, 2026. The likely range is $454,112 to $493,306. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 18 Horizon Ridge Ct, Saint Charles, MO last sell?

18 Horizon Ridge Ct, Saint Charles, MO last sold on May 5, 2017, according to the county's recorded deed. TopHap holds 3 recorded sales for this parcel.

How big is 18 Horizon Ridge Ct, Saint Charles, MO?

18 Horizon Ridge Ct, Saint Charles, MO has 4 bedrooms, 2.5 bathrooms, 2,904 square feet of living space and a 0.33-acre lot.

When was 18 Horizon Ridge Ct, Saint Charles, MO built?

18 Horizon Ridge Ct, Saint Charles, MO was built in 2007, making it 19 years old. It is a bi-level home. The building has 2 stories.

What schools serve 18 Horizon Ridge Ct, Saint Charles, MO?

18 Horizon Ridge Ct, Saint Charles, MO is assigned to Harvest Ridge Elementary School (elementary), rated C-; Francis Howell North High School (high), rated A-; Barnwell Middle School (middle), 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 18 Horizon Ridge Ct, 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 83% of them ($473,709 against a typical $354,183), its price per square foot is higher than 41% of them ($163 against a typical $172), it is bigger than 81% of them (2,904 ft² against a typical 2,024 ft²), its lot is bigger than 79% of them (0.33 ac against a typical 0.22 ac) and it is newer than 91% of them (2007 against a typical 1988). Measured against all of St. Charles County, it is worth more than 77% 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 18 Horizon Ridge Ct, Saint Charles, MO?

The 2025 property tax bill for 18 Horizon Ridge Ct, Saint Charles, MO was $5,278. The county assessed it at $91,866.

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