Warren County property record for 18858 Spring Valley Dr, Marthasville, MO 63357
| Property Type | Rural Home |
|---|---|
| Details | 2 ba · 1,814 sqft · built 2019 |
| Lot Size | 17.6 acres (770,576 sqft) |
| Owner | 2 Individual Names on Record |
| Last Sale | $310,000 (Jul 2005) |
| Tax Bill | $2,557 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 12-18.0-0-00-003.001.000 |
| Primary APN | 12-18.0-0-00-003.001.000 |
|---|
| Full Baths | 2 Baths |
|---|---|
| Stories | 1 Story |
| Building Area | 1,814 sqft Living Area |
| Basement Area | 1,814 sqft |
| Sunroom | Sunroom |
| Flooring | Carpet |
| Interior Walls | Wallboard/Drywall |
| Year Built | Built 2019 |
|---|---|
| Effective Year Built | Effective 2019 |
| Exterior Material | Vinyl |
| Construction Type | Frame |
| Roof Type | Gable |
| Roof Material | Asphalt |
| Lot Area | 770,576 sqft (17.6 acres) |
| Garage Type | Mixed |
| Garage Area | 625 sqft |
| Parking Spaces | 5 Parking Spaces |
| Porch | Slab |
|---|---|
| Porch Area | 260 sqft |
| Deck Area | 96 sqft |
| Patio Area | 120 sqft |
| Cooling System | HVAC |
|---|---|
| Heating System | HVAC |
| Street Address | 18858 SPRING VALLEY DR |
|---|---|
| City | MARTHASVILLE |
| State | MO |
| Zip | 63357 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Rural Home |
| Legal Description | SEC 18 TWP 45 NR1W PT LOT 2 NW1/4 |
| Legal Range | 01W |
| Legal Township | 45N |
| Legal Section | 18 |
| Legal Lot Number | 2 |
| Jurisdiction | WARREN MO |
| Township / Civil Division | CHARRETTE |
| Census Block Group | 3 |
| Census Block | 3027 |
| 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 | 2 Individual Names on Record |
|---|---|
| Mailing Address | PO BOX 246, MARTHASVILLE, MO 63357-0246 |
| Owner Type | Individual |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Jul 21, 2005 · Amount on Record |
| Deed Sale | Jul 21, 2005 · Amount on Record |
| Deed Document Number | 20056197 |
| Deed Book / Page | 1332 / 577 |
| Prior Transfer Date | Jul 18, 2005 |
| Prior Transfer Doc | 1332/577 |
| 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 | Washington School District (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | $2,557.00 | $43,224 (+12.14%) Land $6,537 Building $36,687 | $235,280 (+11.69%) Land $42,190 Building $193,090 |
| 2024 | $2,557.00 (+7.94%) | $38,544 (-) Land $6,077 Building $32,467 | |
| 2023 | $2,369.00 (+6.86%) | $38,544 (+7.43%) Land $6,077 Building $32,467 | $210,648 (+7.14%) Land $39,770 Building $170,878 |
| 2022 | $2,217.00 | $35,877 Land $5,815 Building $30,062 | |
| 2021 | $196,610 Land $38,390 Building $158,220 |
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.
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 | 6 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 | Moderate above 40% of the US · lower than 60% 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 15 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Starlink Satellite | 280 / 30 |
| T-Mobile Fixed Wireless | 100 / 20 |
| Brightspeed DSL | 100 / 10 |
May also be available: AT&T, BlueBit Networks, Gateway Fiber, Wisper ISP.
5G (outdoors only) and 4G LTE
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