St. Tammany Parish property record for 645 Kostmayer Ave, Slidell, LA 70458
| Property Type | Single Family Home |
|---|---|
| Details | 40,192 sqft · built 1975 |
| Lot Size | 2.7 acres (117,743 sqft) |
| Owner | Company Name on Record |
| Tax Bill | $34,593 (2025) |
| APN | 124-050-2006 |
| Primary APN | 124-050-2006 |
|---|---|
| Alternative APN |
|
| Building Area | 40,192 sqft Living Area |
|---|
| Year Built | Built 1975 |
|---|---|
| Lot Area | 117,743 sqft (2.7 acres) |
| Storage Building | 624 sqft |
| Old Parcel Number | 124-050-2006 |
|---|---|
| Street Address | 645 KOSTMAYER AVE |
| City | SLIDELL |
| State | LA |
| Zip | 70458-4900 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | 2.703 ACS M/L BEING LOT 5 CONT 0.707 ACS AND PARCEL CONT 1.995 ACS SEC 44 9 14 CITY OF SLIDELL CB 1418 788 INST NO 943878 INS |
| Legal Range | 14 |
| Legal Township | 09 |
| Legal Section | 44 |
| Legal Subdivision | APARTMENTS (PARISH) |
| Legal Lot Number | 5 |
| Jurisdiction | SAINT TAMMANY LA |
| Township / Civil Division | 12 |
| Census Block Group | 1 |
| Census Block | 1019 |
| Census Tract | 40801 |
Source: St. Tammany Parish records, as of February 5, 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | Company Name on Record |
|---|---|
| Mailing Address | 6260 COLBERT ST, NEW ORLEANS, LA 70124-3013 |
| Owner Type | Company |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Oct 9, 2014 |
| Deed Sale | Oct 9, 2014 |
| Deed Document Number | 1958703 |
| Record Updated | Jun 8, 2026 |
Source: St. Tammany Parish assessment roll, as of October 15, 2025
| Type | Name |
|---|---|
| State | Louisiana |
| County | St. Tammany Parish |
| Municipality | Slidell City |
| Unified School District | St. Tammany Parish School District (PK - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2025 | $34,593.00 (-6.31%) | $215,378 (-) Building $215,378 | $2,153,776 (-) Building $2,153,776 |
| 2024 | $36,922.00 (+86.09%) | $215,378 (+80.99%) Building $215,378 | $2,153,776 (+80.99%) Building $2,153,776 |
| 2023 | $19,841.00 | $119,000 (-) Land $23,549 Building $95,451 | $1,190,000 (-) Land $235,490 Building $954,510 |
| 2022 | $19,841.00 | $119,000 Land $23,549 Building $95,451 | $1,190,000 Land $235,490 Building $954,510 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
Source: FEMA National Flood Hazard Layer · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Not on file |
|---|---|
| Flood Insurance Cost | Premium on Record median of 326 policies |
| Community Rating System | Class 6 (20% premium discount) |
| Nearby Flood Policies | 326 in force |
| Nearby Flood Claims | 1,026 (1979–2026) |
| Claims Outside the SFHA | 5 of 1,026 |
| Most Recent Claim | Jun 2026 · Tropical Storm Arthur |
| Claims by Event |
|
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 · above 64% of Louisiana |
|---|---|
| Wildfire Likelihood | 0.05% 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 | CITY OF SLIDELL WATER SUPPLY serves 35,547 people · EPA ID LA1103041 |
|---|---|
| Water Source | Groundwater |
| Last State Inspection | Mar 2026 |
| Lead | Under 1 ppb (2022–2024) action level 15 ppb |
| Water Quality | E. coli resolved · Sep 2022 |
|---|---|
| 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 422 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| AT&T Fiber | 5,000 / 5,000 |
| Spectrum Cable | 1,000 / 1,000 |
| Tammany Wireless Fixed Wireless | 499 / 285 |
| Verizon Fixed Wireless | 300 / 20 |
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