St. Charles County property record for 309 Sir Calvert Ct, O Fallon, MO 63368
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2.5 ba · 2,508 sqft · built 2005 |
| Lot Size | 0.39 acres (16,988 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $342,816 (Oct 2005) |
| Tax Bill | $6,622 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | T041600209 |
| Primary APN | T041600209 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 6 Rooms |
| Stories | 1 Story |
| Building Area | 2,508 sqft Living Area |
| Gross Area | 5,580 sqft |
| 1st Floor Area | 2,508 sqft |
| Basement Area | 2,448 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 2005 |
|---|---|
| Effective Year Built | Effective 2005 |
| Architectural Style | Ranch |
| Exterior Material | Brick/Stone |
| Lot Area | 16,988 sqft (0.39 acres) |
| Garage Type | Attached |
| Garage Area | 624 sqft |
| Parking Spaces | 3 Parking Spaces |
| Porch | Open Porch |
| Porch Area | 36 sqft |
| Patio Area | 544 sqft |
| Heating Fuel | Gas |
|---|---|
| Sewer | Connected |
| Account Number | T041600209 |
|---|---|
| Street Address | 309 SIR CALVERT CT |
| City | O FALLON |
| State | MO |
| Zip | 63368-7339 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | AVALON LOT 45 |
| Legal Subdivision | AVALON |
| Legal Lot Number | 45 |
| Jurisdiction | ST CHARLES MO |
| Township / Civil Division | BOONE |
| Census Block Group | 1 |
| Census Block | 1018 |
| Census Tract | 311154 |
309 Sir Calvert Ct is owned and occupied by two individuals who bought it in October 2005.
Source: St. Charles County records, as of August 7, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 309 SIR CALVERT CT, O FALLON, MO 63368-7339 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Oct 6, 2005 · Amount on File |
| Deed Sale | Oct 6, 2005 · Amount on File |
| Deed Document Number | 2005964310 |
| Deed Book / Page | 4313 / 1924 |
| Prior Transfer Date | Sep 13, 2005 |
| Prior Transfer Doc | 0000878530 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 309 Sir Calvert Ct was $6,622, up 9.5% from the year before.
Source: St. Charles County assessment roll, as of August 7, 2026
| Type | Name |
|---|---|
| State | Missouri |
| Municipality | Dardenne Prairie City |
| County | St. Charles County |
| Unified School District | Fort Zumwalt R-II School District (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $109,589 (-) | $576,786 (-) Land $90,000 Building $486,786 | |
| 2025 | $6,622.00 (+9.45%) | $109,589 | $576,786 Land $90,000 Building $486,786 |
| 2024 | $6,050.00 | ||
| 2023 | $97,307 | ||
| 2022 | $512,144 Land $70,000 Building $442,144 |
Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.
FEMA maps place 309 Sir Calvert Ct in Zone X, an area of minimal flood risk.
Source: FEMA National Flood Hazard Layer, effective August 25, 2024 · 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 |
| Community Rating System | Class 6 (20% premium discount) |
| Nearby Flood Policies | 2 in force |
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 309 Sir Calvert Ct 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 | ST CHARLES COUNTY PWSD 2 serves 100,587 people · EPA ID MO6024530 |
|---|---|
| Water Source | Purchased surface water from ST LOUIS CITY PWS |
| Last State Inspection | Aug 2023 |
| Lead | 2 ppb (2026) action level 15 ppb |
| Water Quality | None last 10 years |
|---|---|
| Treatment and Procedure | None last 10 years |
| Monitoring and Reporting | 1 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 435 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| i3 Broadband Fiber | 8,000 / 8,000 |
| Gateway Fiber Fiber | 2,000 / 2,000 |
| Spectrum Cable | 1,000 / 1,000 |
| Wisper ISP Fixed Wireless | 400 / 30 |
| Verizon Fixed Wireless | 300 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
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