Warren County property record for 503 Roy Ave, Warrenton, MO 63383
| Property Type | Single Family Home |
|---|---|
| Details | 1 ba · 1,008 sqft · built 1979 |
| Lot Size | 0.25 acres (10,890 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $113,300 (Apr 2007) |
| Tax Bill | $1,025 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 05-28.0-4-04-017.000.000 |
| Primary APN | 05-28.0-4-04-017.000.000 |
|---|
| Full Baths | 1 Bath |
|---|---|
| Stories | 1 Story |
| Building Area | 1,008 sqft Living Area |
| Basement Area | 1,008 sqft |
| Flooring | Carpet |
| Interior Walls | Wallboard/Drywall |
| Year Built | Built 1979 |
|---|---|
| Effective Year Built | Effective 1979 |
| Exterior Material | Vinyl |
| Construction Type | Frame |
| Roof Type | Gable |
| Roof Material | Asphalt |
| Lot Area | 10,890 sqft (0.25 acres) |
| Lot Dimensions | 133 ft deep x 80.7 ft wide |
| Garage Type | Attached |
| Garage Area | 384 sqft |
| Parking Spaces | 1 Parking Space |
| Porch | Slab |
| Porch Area | 64 sqft |
| Deck Area | 434 sqft |
| Cooling System | HVAC |
|---|---|
| Heating System | HVAC |
| Street Address | 503 ROY AVE |
|---|---|
| City | WARRENTON |
| State | MO |
| Zip | 63383-2208 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT 53 WARRENTON ACRES SEC 28 TWP 47 NR2W PLAT 2 80.71' X 133.35' |
| Legal Range | 02W |
| Legal Township | 47N |
| Legal Section | 28 |
| Legal Subdivision | WARRENTON ACRES |
| Legal Block | 4 |
| Legal Lot Number | 53 |
| Jurisdiction | WARREN MO |
| Township / Civil Division | SOUTH ELKHORN |
| Census Block Group | 2 |
| Census Block | 2035 |
| Census Tract | 820107 |
503 Roy Ave is owned and occupied by two individuals who bought it in April 2007.
Source: Warren County records, as of February 9, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 503 ROY AVE, WARRENTON, MO 63383-2208 |
| 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 | Apr 18, 2007 · Amount on File |
| Deed Sale | Apr 18, 2007 · Amount on File |
| Prior Sale | Oct 18, 2005 · Amount on File |
| Deed Document Number | 20072932 |
| Prior Transfer Date | Sep 29, 2005 |
| Prior Transfer Doc | 1350/369 |
| Record Updated | Jun 8, 2026 |
The 2025 property tax bill for 503 Roy Ave was $1,025, up 8.8% from the year before.
Source: Warren County assessment roll, as of February 9, 2026
| Type | Name |
|---|---|
| State | Missouri |
| County | Warren County |
| Municipality | Warrenton City |
| Unified School District | Warren County R-III School District (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | $1,025.00 (+8.81%) | $16,007 (+13%) Land $2,922 Building $13,085 | $84,250 Land $15,380 Building $68,870 |
| 2024 | $942.00 (+5.37%) | $14,165 (-) Land $2,586 Building $11,579 | |
| 2023 | $894.00 (+8.1%) | $14,165 (+8%) Land $2,586 Building $11,579 | $74,552 Land $13,608 Building $60,944 |
| 2022 | $827.00 | $13,116 Land $2,394 Building $10,722 | |
| 2021 | $69,030 Land $12,600 Building $56,430 |
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 503 Roy Ave in Zone X, an area of minimal flood risk, though there have been 2 flood claims nearby since 2019.
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 | 1 in force |
| Nearby Flood Claims | 2 (2019–2021) |
| Claims Outside the SFHA | 2 of 2 |
| Most Recent Claim | Jun 2021 · rainfall accumulation |
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 503 Roy Ave is low, with a 0.04% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 64% of the US · lower than 72% of Missouri |
|---|---|
| Wildfire Likelihood | 0.04% 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 | WARRENTON PWS serves 8,208 people · EPA ID MO6010834 |
|---|---|
| Water Source | Groundwater |
| Last State Inspection | Oct 2025 |
| Also Mapped Here | MONTGOMERY CO PWSD 1 |
| Lead | Under 1 ppb (2024–2026) 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. The service area is an EPA estimate; the actual supplier may differ.
Source: FCC Broadband Data Collection, based on 187 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Gateway Fiber Fiber | 2,000 / 2,000 |
| Spectrum Cable | 1,000 / 1,000 |
| Verizon Fixed Wireless | 300 / 20 |
May also be available: Brightspeed.
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