# 409 KOSTMAYER Avenue, Slidell, LA 70458

> **TL;DR:** 3bd/2ba single family, $110,000 ($128/sqft), built 1950, 858 sqft.
> A/C. Est. $477/mo. Listed 19 days.

## Property at a Glance

| Attribute | Value |
|-----------|-------|
| Price | $110,000 |
| Price/sqft | $128 |
| Bedrooms | 3 |
| Bathrooms | 1 full, 1 half |
| Square Feet | 858 |
| Year Built | 1950 |
| Lot Size | 11,761 sqft (0.27 acres) |
| Stories | 1 |
| Property Type | Single Family (Other) |
| Status | For Sale |
| Days on Market | 19 |

## Estimated Monthly Costs

| Category | Amount |
|----------|--------|
| Mortgage (20% down, 6.5%) | $477 |
| **Total** | **$477** |

## Key Amenities

- A/C

## Property Highlights

- Built in 1950
- 0.27 acre lot

## Description

### Agent Description
Slidell Charmer with Bonus Efficiency Apartment in Sought-After Salmen Addition! Don't miss this well-appointed 3-bedroom, 1.5-bath home nestled in the established Salmen Addition neighborhood of Slidell. Whether you're a first-time buyer, investor, or savvy homeowner looking to offset your mortgage, this property delivers incredible value and versatility. The standout feature? A fully self-contained mother-in-law/efficiency apartment, perfect for extended family or out-of-town guests Step outside and enjoy the generous covered patio, an ideal spot for entertaining, relaxing, or simply soaking in the Louisiana lifestyle year-round rain or shine. This home offers the kind of quiet, established neighborhood feel that buyers are always searching for. Schedule your showing today before this one is gone!

## Location

- **Address:** 409 KOSTMAYER Avenue, Slidell, LA 70458
- **County:** St. Tammany
- **Neighborhood:** Salmen Addition
- **Coordinates:** 30.259628, -89.789278
- **Google Maps:** https://www.google.com/maps?q=30.259628,-89.789278

## Listing Agent

- **Name:** Nichell Thompson
- **Brokerage:** Keller Williams Realty New Orleans
- **Phone:** (504) 862-0100
- **Email:** nichellt@bellsouth.net

## Primary Photo

![409 KOSTMAYER Avenue - Primary Photo](http://lh.rdcpix.com/c9f4246a4ec3683677110463e68ca522l-f3928216369r.jpg)

*9 total photos available on [listing page](https://www.propertysimple.com/listing/409-kostmayer-avenue-slidell-la-70458-2562422)*

---

**MLS#:** 2562422 | **Updated:** 2026-06-24
**Source:** listhub

*Copyright © 2026 New Orleans Metropolitan Association of REALTORS®. All rights reserved. All information provided by the listing agent/broker is deemed reliable but is not guaranteed and should be independently verified.*

[View on PropertySimple](https://www.propertysimple.com/listing/409-kostmayer-avenue-slidell-la-70458-2562422)

---

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