Apartments (Generic)Residential
Last sold for $27,218,800 on Jun 12, 2015
1204 KNOLLHAVEN DR
BALLWIN, MO 63021
7
Beds
6 / 2
Baths
19,391 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.
8.8 ac
Lot SizeThe size of the land the home sits on, from county records.
1973
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.
Valuation
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$27,218,800 · Jun 12, 2015
Tax & Assessment
Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$75,681 (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.$1,241,020 (2026)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$285,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$956,020
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$895,580
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$6,531,700
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.
15
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.
77
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.1 percent flood zone
Scores 0–100; higher = greater projected risk.
Property Facts
Property TypeThe broad category the county puts this property in, such as residential or commercial.Apartments (Generic)
CountyST. LOUIS
ConstructionThe main material the home's frame and walls are built from.Wood (Unspecified)
HeatingThe type of heating system in the home.Forced Air With Air Conditioning
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, Open
PoolWhether the property has a pool, and what kind, such as in-ground.Yes
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Patio · 80 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.
EHM
Hanna Woods Elementary SchoolA-
Elementary · Grades KG–5 · 1.1 mi
South High SchoolA
High · Grades 9–12 · 1.3 mi
Southwest Middle SchoolA
Middle · Grades 6–8 · 1.5 mi
District: Parkway School District
Neighborhood · ZIP 63021These 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.41
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.82
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.129
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.39%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.3.6%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.2%
PopulationHow many people live in this area.55,113
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.2,498 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$113,595
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$131,969
Average tempThe average temperature here across a full year.55°F
Annual precipHow much rain and melted snow falls here in a typical year.42 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.57%
Owner Tools
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How this home compares
1204 Knollhaven 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 largest homes in Ballwin 63021
- Among the largest lots in Ballwin 63021
- Older than 72% of homes in Ballwin 63021
How it measures up in Ballwin 63021
The dot is this home. The mark in the middle is the typical home in Ballwin 63021.
Living area19,391 ft²
SmallerTypical 1,676 ft²Bigger
Bigger than almost all homes nearby
Lot size8.8 ac
SmallerTypical 0.21 acBigger
Bigger than almost all homes nearby
Year built1973
OlderTypical 1982Newer
Newer than 28% of homes nearby
| Measure | This home | Ballwin 63021 | St. Louis County |
|---|---|---|---|
| Living areabigger than | 19,391 ft² | almost all homes | almost all homes |
| Lot sizebigger than | 8.8 ac | almost all homes | almost all homes |
| Year builtnewer than | 1973 | 28% of homes | 66% of homes |
About 1204 Knollhaven Dr
When did 1204 Knollhaven Dr, Ballwin, MO last sell?
1204 Knollhaven Dr, Ballwin, MO last sold on Jun 12, 2015 for $27,218,800, according to the county's recorded deed.
How big is 1204 Knollhaven Dr, Ballwin, MO?
1204 Knollhaven Dr, Ballwin, MO has 7 bedrooms, 6 bathrooms and 19,391 square feet of living space.
When was 1204 Knollhaven Dr, Ballwin, MO built?
1204 Knollhaven Dr, Ballwin, MO was built in 1973, making it 53 years old. The building has 2 stories.
What schools serve 1204 Knollhaven Dr, Ballwin, MO?
1204 Knollhaven Dr, Ballwin, MO is assigned to Hanna Woods Elementary School (elementary), rated A-; South High School (high), rated A; Southwest Middle School (middle), rated A. All sit in Parkway School District. Attendance boundaries change — confirm with the district before relying on an assignment.
How does 1204 Knollhaven Dr, Ballwin, MO compare to other homes in Ballwin 63021?
Among the 19,805 homes in Ballwin 63021, it is bigger than almost all of them (19,391 ft² against a typical 1,676 ft²), its lot is bigger than almost all of them (8.8 ac against a typical 0.21 ac) and it is newer than 28% of them (1973 against a typical 1982). These shares are recounted nightly from the full county assessor record for each area, not from active listings.
What are the property taxes on 1204 Knollhaven Dr, Ballwin, MO?
The 2025 property tax bill for 1204 Knollhaven Dr, Ballwin, MO was $75,681. The county assessed it at $1,241,020.
Closest homes
- 116 Mesa Verde Dr0.1 mi · 19 bd · 16 ba · 117,566 ft² · Sold Jan 1900
- 119 Orchard Village Ct0.2 mi · 20 bd · 16 ba · 93,161 ft² · Sold Jan 1900
- 299 Glyn Cagny Rd$478K0.2 mi · 3 bd · 3 ba · 2,348 ft² · Sold $345K · Nov 2016
- 1191 Wicklow Rd$297K0.2 mi · 4 bd · 3 ba · 1,317 ft² · Sold $106K · Feb 2002
- 1193 Wicklow Rd$332K0.2 mi · 3 bd · 2 ba · 1,100 ft² · Sold $325K · Apr 2025
- 1195 Wicklow Rd$418K0.2 mi · 5 bd · 2.5 ba · 2,535 ft² · Sold $183K · Jul 2013
- 303 Glyn Cagny Rd$450K0.2 mi · 3 bd · 2.5 ba · 2,794 ft² · Sold $179K · Oct 2001
- 1199 Wicklow Rd$346K0.2 mi · 4 bd · 2 ba · 1,659 ft² · Sold Jan 1900
More homes in Ballwin 63021
- 886 Arbor Chase Dr$875K3 bd · 3.5 ba · 5,217 ft² · Sold Oct 2026
- 216 Solley Dr$169K2 bd · 1 ba · 750 ft² · Sold Oct 2026
- 917 Meramec Grove Dr$450K3 bd · 2 ba · 1,800 ft² · Sold $206K · Oct 2026
- 403 Kacey Ln$550K4 bd · 2.5 ba · 3,002 ft² · Sold $695K · Oct 2026
- 413 Ries Rd$250K2 bd · 1 ba · 1,168 ft² · Sold Oct 2026
- 533 Golfwood Dr$299K3 bd · 1.5 ba · 1,064 ft² · Sold $319K · Oct 2026
- 1566 Buckhurst Ct$525K4 bd · 2.5 ba · 2,543 ft² · Sold $640K · Oct 2026
- 545 Lemonwood Dr$285K3 bd · 2 ba · 1,310 ft² · Sold $314K · Oct 2026
- 267 Treasure Cv$433K4 bd · 3 ba · 1,771 ft² · Sold Oct 2026
- 1219 John Ryan Ln$515K3 bd · 2 ba · 1,769 ft² · Sold $452K · Oct 2026
- 1003 Pocono Trl$182K2 bd · 1.5 ba · 1,425 ft² · Sold Oct 2026
- 2 Silveroak Dr$375K3 bd · 3.5 ba · 1,817 ft² · Sold $356K · Oct 2026
Assigned schools
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