St. Louis County property record for 9521 Mackenzie Rd, Saint Louis, MO 63123
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 1 ba · 1,691 sqft · built 1937 |
| Lot Size | 0.186 acres (8,100 sqft) |
| Owner | 2 Individual Names on File |
| Tax Bill | $3,271 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 26J-23-0723 |
| Primary APN | 26J-23-0723 |
|---|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 1 Bath |
| Plumbing Fixtures | 6 Plumbing Fixtures |
| Total Rooms | 7 Rooms |
| Stories | 1 Story |
| Building Area | 1,691 sqft Living Area |
| Gross Area | 1,958 sqft |
| 1st Floor Area | 970 sqft |
| Basement Area | 187 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1937 |
|---|---|
| Effective Year Built | Effective 1937 |
| Architectural Style | Bungalow |
| Exterior Material | Aluminum/Vinyl |
| Foundation Type | Raised |
| Lot Area | 8,100 sqft (0.186 acres) |
| Lot Dimensions | 135 ft deep x 60 ft wide |
| Terrain | Above Road/Slope |
| Garage Type | Detached |
| Garage Area | 528 sqft |
| Parking Spaces | 2 Parking Spaces |
| Porch | Stoop |
| Patio Area | 407 sqft |
| Poultry House | 80 sqft |
| Cooling System | Central |
|---|---|
| Heating System | HVAC |
| Heating Fuel | Electric |
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 9521 MACKENZIE RD |
|---|---|
| City | SAINT LOUIS |
| State | MO |
| Zip | 63123-5442 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R5 |
| Legal Description | ALPHONSE BERRY TRACT |
| Legal Subdivision | ALPHONSE BERRY TRACT |
| Legal Lot Number | 4 |
| Jurisdiction | ST LOUIS MO |
| Township / Civil Division | CONCORD |
| Census Block Group | 2 |
| Census Block | 2012 |
| Census Tract | 220002 |
9521 Mackenzie Rd is owned and occupied by two individuals who acquired it in October 2016.
Source: St. Louis County records, as of September 29, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 9521 MACKENZIE RD, SAINT LOUIS, MO 63123-5442 |
| 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 7, 2016 |
| Deed Sale | Oct 7, 2016 |
| Prior Sale | Jul 13, 2007 |
| Deed Document Number | 2016226 |
| Deed Book / Page | 22224 / 517 |
| Prior Transfer Date | Oct 5, 2016 |
| Prior Transfer Doc | 0222240517 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 9521 Mackenzie Rd was $3,271, down 0.2% from the year before.
Source: St. Louis County assessment roll, as of September 29, 2026
| Type | Name |
|---|---|
| State | Missouri |
| County | St. Louis County |
| Unified School District | Affton 101 School District (KG - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $44,120 (-) Land $12,710 Building $31,410 | $232,200 (-) Land $66,900 Building $165,300 | |
| 2025 | $3,271.00 (-0.21%) | $44,120 Land $12,710 Building $31,410 | $232,200 Land $66,900 Building $165,300 |
| 2024 | $3,278.00 (+3.44%) | ||
| 2023 | $3,169.00 (+1.05%) | $40,390 (+16.87%) Land $9,080 Building $31,310 | $212,600 Land $47,800 Building $164,800 |
| 2022 | $3,136.00 | $34,560 Land $9,080 Building $25,480 | |
| 2021 | $181,900 Land $47,800 Building $134,100 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 9521 Mackenzie Rd in Zone X, an area of minimal flood risk.
Source: FEMA National Flood Hazard Layer, effective August 10, 2025
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
Values are read at the parcel center point; lenders make the official flood determination.
The area around 9521 Mackenzie Rd has no burnable land within ember reach, so its wildfire risk is not rated.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Not rated no burnable land within 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 791 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| AT&T Fiber · Fixed Wireless in parts of the area | 5,000 / 5,000 |
| Spectrum Cable · Fiber in parts of the area | 1,000 / 1,000 |
| Wisper ISP Fixed Wireless | 800 / 250 |
| T-Mobile Fixed Wireless | 100 / 20 |
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