St. Louis County property record for 400 Jefferson Ave, Ballwin, MO 63021
| Property Type | Vacant Land |
|---|---|
| Lot Size | 6.69 acres (291,765 sqft) |
| Owner | Company Name on Record |
| Flood Zone | Zone X (minimal risk) |
| APN | 23R-43-1831 |
| Primary APN | 23R-43-1831 |
|---|---|
| Alternative APN |
|
| Lot Area | 291,765 sqft |
|---|---|
| Terrain | Below Road/Slope |
| View / Lot | Cul-De-Sac |
| Garage Type | Open |
| Garage Area | 25,000 sqft |
| Sewer | Municipal |
|---|---|
| Water Source | Commercial |
| Street Address | 400 JEFFERSON AVE |
|---|---|
| City | BALLWIN |
| State | MO |
| Zip | 63021-4925 |
| Property Category | Vacant Land |
| Property Type | Vacant Land > Uncategorized |
| Local Zoning Code | R2 |
| Legal Description | BALLWIN ELEMENTARY SCHOOL LOT PT 1 & WOERTHER LN VACATED PT & BALLWIN BLK PTS 1 THRU 9 11 13 & 16 & SECTION 5-45-4 CONSOLIDATION (AKA ROCKWOOD-BALLWIN ELEMENTARY SCHOOL) LOT PT A |
| Legal Range | 04 |
| Legal Township | 45 |
| Legal Section | 05 |
| Legal Subdivision | BALLWIN ELEMENTARY SCHOOL LOT PT 1 & |
| Legal Block | 1-9 |
| Legal Lot Number | 1 |
| Jurisdiction | ST LOUIS MO |
| Township / Civil Division | WILDHORSE |
| Census Block Group | 1 |
| Census Block | 1001 |
| Census Tract | 217923 |
Source: St. Louis County records, as of September 29, 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | Company Name on Record |
|---|---|
| Mailing Address | 111 E NORTH ST, EUREKA, MO 63025-1229 |
| Owner Type | Company |
| Deed Names | Name on Deed |
|---|---|
| Record Updated | Oct 29, 2026 |
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 | Rockwood R-VI School District (KG - 12) |
| Year | Assessed Value | Assessed Market Value |
|---|---|---|
| 2026 | $2,747,490 (-) Land $746,910 Building $2,000,580 | $8,585,900 (-) Land $2,334,100 Building $6,251,800 |
| 2025 | $2,747,490 (+15.1%) Land $746,910 Building $2,000,580 | $8,585,900 (+15.1%) Land $2,334,100 Building $6,251,800 |
| 2023 | $2,387,140 Land $653,570 Building $1,733,570 | $7,459,800 Land $2,042,400 Building $5,417,400 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
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 | 5 (1979–2024) |
| Claims Outside the SFHA | 2 of 5 |
| Most Recent Claim | Jul 2024 · river or lake 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.
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 | None beyond ember reach |
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 234 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 in parts of the area | 5,000 / 5,000 |
| Spectrum Cable | 1,000 / 1,000 |
| Verizon Fixed Wireless | 300 / 20 |
May also be available: T-Mobile.
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