Warren County property record for 20122 Mill Rd, Marthasville, MO 63357
| Property Type | Rural Home |
|---|---|
| Details | 1 ba · 2,048 sqft · built 1923 |
| Lot Size | 12.1 acres (528,818 sqft) |
| Owner | Individual Name on Record |
| Tax Bill | $953 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 13-17.0-3-07-012.000.000 |
| Primary APN | 13-17.0-3-07-012.000.000 |
|---|
| Full Baths | 1 Bath |
|---|---|
| Stories | 2 Stories |
| Building Area | 2,048 sqft Living Area |
| Basement Area | 1,024 sqft |
| Flooring | Carpet |
| Interior Walls | Plaster |
| Year Built | Built 1923 |
|---|---|
| Effective Year Built | Effective 1923 |
| Exterior Material | Vinyl |
| Construction Type | Frame |
| Roof Type | Gable |
| Roof Material | Asphalt |
| Lot Area | 528,818 sqft (12.1 acres) |
| Porch | Slab |
|---|---|
| Porch Area | 256 sqft |
| Deck Area | Deck Area |
| Patio Area | 240 sqft |
| Utility Building | 3,200 sqft |
| Cooling System | HVAC |
|---|---|
| Heating System | HVAC |
| Street Address | 20122 MILL RD |
|---|---|
| City | MARTHASVILLE |
| State | MO |
| Zip | 63357-3153 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Rural Home |
| Legal Description | SEC 17 TWP 45 N RNG 2 W PT SE SW CALCULATED ACRES: 12.45 |
| Legal Range | 02W |
| Legal Township | 45N |
| Legal Section | 17 |
| Jurisdiction | WARREN MO |
| Township / Civil Division | CHARRETTE |
| Census Block Group | 2 |
| Census Block | 2061 |
| Census Tract | 820203 |
Source: Warren County records, as of February 9, 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | Individual Name on Record |
|---|---|
| Mailing Address | 20122 MILL RD, MARTHASVILLE, MO 63357-3153 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Deed Names | Name on Deed |
|---|---|
| Last Transfer Date | Aug 10, 2012 |
| Transfer Doc | 201206012 |
| Record Updated | Jun 8, 2026 |
Source: Warren County assessment roll, as of February 9, 2026
| Type | Name |
|---|---|
| State | Missouri |
| County | Warren County |
| Unified School District | Warren County R-III School District (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | $953.00 | $17,163 (+12.3%) Land $2,772 Building $14,391 | $92,850 (+11.92%) Land $16,300 Building $76,550 |
| 2024 | $953.00 (+5.19%) | $15,283 (-) Land $2,518 Building $12,765 | |
| 2023 | $906.00 (+6.97%) | $15,283 (+7.54%) Land $2,518 Building $12,765 | $82,958 (+7.29%) Land $14,964 Building $67,994 |
| 2022 | $847.00 | $14,212 Land $2,373 Building $11,839 | |
| 2021 | $77,320 Land $14,200 Building $63,120 |
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 November 4, 2009 · 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 | 5 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.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 62% of the US · lower than 67% of Missouri |
|---|---|
| Wildfire Likelihood | 0.07% 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 WARREN serves 1,192 people · EPA ID MO6024629 |
|---|---|
| Water Source | Groundwater |
| Last State Inspection | Aug 2023 |
| Lead | 1 ppb (2021–2023) 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 28 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Starlink Satellite | 280 / 30 |
| Brightspeed DSL · Fixed Wireless in parts of the area | 80 / 10 |
| BlueBit Networks Fixed Wireless | 10 / 1 |
May also be available: T-Mobile, Wisper ISP.
5G and 4G LTE (outdoors only)
Search by:
By searching, you agree to: Terms • Privacy • Disclosures