St. Louis County property record for 421 Andover Ln, Ballwin, MO 63011
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 2.5 ba · 2,700 sqft · built 1972 |
| Lot Size | 0.9 acres (39,204 sqft) |
| Owner | Individual Name on File |
| Tax Bill | $5,619 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 21S-34-0307 |
| Primary APN | 21S-34-0307 |
|---|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2.5 Baths |
| Half Baths | 1 Half Bath |
| Plumbing Fixtures | 10 Plumbing Fixtures |
| Total Rooms | 9 Rooms |
| Stories | 2 Stories |
| Building Area | 2,700 sqft Living Area |
| Gross Area | 3,276 sqft |
| 1st Floor Area | 1,350 sqft |
| Family Room | Family Room |
| Game Room | Game Room |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1972 |
|---|---|
| Effective Year Built | Effective 1972 |
| Architectural Style | Colonial |
| Construction Type | Frame |
| Foundation Type | Raised |
| Lot Area | 39,204 sqft (0.9 acres) |
| Lot Dimensions | 267 ft deep x 104 ft wide |
| Terrain | Above Road/Slope |
| View / Lot | Cul-De-Sac |
| Garage Type | Attached |
| Garage Area | 576 sqft |
| Parking Spaces | 2 Parking Spaces |
| Porch | Open Frame Porch |
| Porch Area | 180 sqft |
| Patio Area | 294 sqft |
| Cooling System | Central |
|---|---|
| Heating System | HVAC |
| Heating Fuel | Electric |
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 421 ANDOVER LN |
|---|---|
| City | BALLWIN |
| State | MO |
| Zip | 63011-2502 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R-2 |
| Legal Description | SCHUPMANN ACRES LOT 3 RESUB LOT 3B |
| Legal Subdivision | SCHUPMANN ACRES LOT 3 RESUB |
| Legal Lot Number | 3,3B |
| Jurisdiction | ST LOUIS MO |
| Township / Civil Division | LAFAYETTE |
| Census Block Group | 1 |
| Census Block | 1001 |
| Census Tract | 217807 |
421 Andover Ln is owned and occupied by an individual.
Source: St. Louis County records, as of September 29, 2026
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 421 ANDOVER LN, BALLWIN, MO 63011-2502 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Deed Names | Name on Deed |
|---|---|
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 421 Andover Ln was $5,619, up 0.1% from the year before.
Source: St. Louis County assessment roll, as of September 29, 2026
| Type | Name |
|---|---|
| State | Missouri |
| Municipality | Ballwin City |
| County | St. Louis County |
| Unified School District | Parkway C-2 School District (KG - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $104,490 (-) Land $46,630 Building $57,860 | $549,900 (-) Land $245,400 Building $304,500 | |
| 2025 | $5,619.00 (+0.09%) | $104,490 Land $46,630 Building $57,860 | $549,900 Land $245,400 Building $304,500 |
| 2024 | $5,614.00 (+1.43%) | ||
| 2023 | $5,535.00 (+7.96%) | $86,790 (+18.15%) Land $29,470 Building $57,320 | $456,800 Land $155,100 Building $301,700 |
| 2022 | $5,127.00 | $73,460 Land $24,550 Building $48,910 | |
| 2021 | $386,600 Land $129,200 Building $257,400 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 421 Andover Ln in Zone X, an area of minimal flood risk, though there have been 1 flood claim nearby since 2015.
Source: FEMA National Flood Hazard Layer, effective August 10, 2025 · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Nearby Flood Policies | 2 in force |
| Nearby Flood Claims | 1 (2015) |
| Claims Outside the SFHA | 1 of 1 |
| Most Recent Claim | Dec 2015 · Severe Storms, Tornadoes, Straight-line Winds, And Flooding |
Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.
Wildfire risk around 421 Andover Ln is low, with less than a 0.01% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 98% of the US · lower than 96% of Missouri |
|---|---|
| Wildfire Likelihood | Under 0.01% annual chance |
| Exposure | Direct burnable vegetation |
Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.
Source: EPA Safe Drinking Water Information System, as of September 2026
| Water System | MO AMERICAN ST LOUIS ST CHARLES COUNTIES private · serves 1,111,000 people · EPA ID MO6010716 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Feb 2024 |
| Lead | Under 1 ppb (2023–2025) action level 15 ppb |
| Water Quality | None last 10 years |
|---|---|
| Treatment and Procedure | None last 10 years |
| Monitoring and Reporting | None last 3 years |
Results are for the whole water system, not water tested at this address; lead at the tap also depends on the building's own pipes.
Source: FCC Broadband Data Collection, based on 328 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| i3 Broadband Fiber | 8,000 / 8,000 |
| AT&T Fiber · DSL | 5,000 / 5,000 |
| Spectrum Cable | 1,000 / 1,000 |
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