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Single Family ResidenceResidential
$1,623,871$437 / 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 $1,330,000 on Mar 3, 2021

21 RIDGEMOOR DR

SAINT LOUIS, MO 63105
5
Beds
5 / 1
Baths
3,715 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.
0.22 ac
Lot SizeThe size of the land the home sits on, from county records.
1924
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
9
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.
1
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$1.6M
$1.5M low$1.7M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$1,330,000 · Mar 3, 2021

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$15,389 (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.$225,820 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$128,900
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$96,920
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$226,350
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$1,188,500

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.45
37
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
22
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
88
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
73
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
8
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.7 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%
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.Conventional
CountySt. Louis
Lot (acres)The size of the land the home sits on, from county records.0.22
FoundationWhat the home is built on, such as a concrete slab, a crawl space, or a basement.Raised (Unspecified)
HeatingThe type of heating system in the home.Forced Air
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.Garage, Basement
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Patio · 252 ft²Porch · 120 ft²

Transaction History(6)

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
Glenridge Elementary SchoolA
Elementary · Grades KG–5 · 0.4 mi
M
Wydown Middle SchoolA-
Middle · Grades 6–8 · 0.6 mi
H
Clayton High SchoolA
High · Grades 9–12 · 1.5 mi

District: Clayton School District

Neighborhood · ZIP 63105These 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.103
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.88
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.132

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.89%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.33%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.7.0%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.0.9%
PopulationHow many people live in this area.17,043
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.6,465 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$124,640
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$178,134
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

21 Ridgemoor 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.

  • Among the most valuable homes in St. Louis County
  • Among the highest price per square foot in St. Louis County
  • Bigger than 94% of homes in St. Louis County
  • Has a bigger lot than 80% of homes in Saint Louis 63105
  • Older than 96% of homes in St. Louis County

What homes are worth in Saint Louis 63105

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

This home
$164K$3.2M

This home is worth more than 85% of homes in Saint Louis 63105.

How it measures up in Saint Louis 63105

The dot is this home. The mark in the middle is the typical home in Saint Louis 63105.

Estimated value$1,623,871
CheaperTypical $808,574Pricier

Pricier than 85% of homes nearby

Price per ft²$437
CheaperTypical $340Pricier

Pricier than 80% of homes nearby

Living area3,715 ft²
SmallerTypical 2,408 ft²Bigger

Bigger than 81% of homes nearby

Lot size0.22 ac
SmallerTypical 0.14 acBigger

Bigger than 80% of homes nearby

Year built1924
OlderTypical 1939Newer

Newer than 13% of homes nearby

How 21 Ridgemoor Dr ranks against every home in each area.
MeasureThis homeSaint Louis 63105St. Louis County
Estimated valuepricier than$1,623,87185% of homesalmost all homes
Price per ft²pricier than$43780% of homesalmost all homes
Living areabigger than3,715 ft²81% of homes94% of homes
Lot sizebigger than0.22 ac80% of homes57% of homes
Year builtnewer than192413% of homes4% of homes

About 21 Ridgemoor Dr

How much is 21 Ridgemoor Dr, Saint Louis, MO worth?

The TopHap Estimate for 21 Ridgemoor Dr, Saint Louis, MO is $1,623,871 as of Aug 30, 2026. The likely range is $1,522,373 to $1,725,369. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 21 Ridgemoor Dr, Saint Louis, MO last sell?

21 Ridgemoor Dr, Saint Louis, MO last sold on Mar 3, 2021 for $1,330,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 21 Ridgemoor Dr, Saint Louis, MO?

21 Ridgemoor Dr, Saint Louis, MO has 5 bedrooms, 5 bathrooms, 3,715 square feet of living space and a 0.22-acre lot.

When was 21 Ridgemoor Dr, Saint Louis, MO built?

21 Ridgemoor Dr, Saint Louis, MO was built in 1924, making it 102 years old. It is a conventional home. The building has 2 stories.

What schools serve 21 Ridgemoor Dr, Saint Louis, MO?

21 Ridgemoor Dr, Saint Louis, MO is assigned to Glenridge Elementary School (elementary), rated A; Wydown Middle School (middle), rated A-; Clayton High School (high), rated A. All sit in Clayton School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 21 Ridgemoor Dr, Saint Louis, MO compare to other homes in Saint Louis 63105?

Among the 5,033 homes in Saint Louis 63105, it is worth more than 85% of them ($1,623,871 against a typical $808,574), its price per square foot is higher than 80% of them ($437 against a typical $340), it is bigger than 81% of them (3,715 ft² against a typical 2,408 ft²), its lot is bigger than 80% of them (0.22 ac against a typical 0.14 ac) and it is newer than 13% of them (1924 against a typical 1939). Measured against all of St. Louis County, it is worth more than almost all 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 21 Ridgemoor Dr, Saint Louis, MO?

The 2024 property tax bill for 21 Ridgemoor Dr, Saint Louis, MO was $15,389. The county assessed it at $225,820.

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