Active

$110,000

409 Kostmayer Ave, Slidell, LA 70458

3beds

858sqft

$768/mo

Get pre-qualified

Single Family Residence

Built in 1950

0.27 Acres Lot

$-- Zestimate^®

$128/sqft

$-- HOA

What's special

Generous covered patio

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!

112 days
116
15

Facts & features

Interior

Bedrooms & bathrooms

Bedrooms: 3
Bathrooms: 2
Full bathrooms: 1
1/2 bathrooms: 1

Primary bedroom

Description: Flooring: Tile
Level: Lower
Dimensions: 11x10

Bedroom

Description: Flooring: Laminate,Simulated Wood
Level: Lower
Dimensions: 8x3

Bedroom

Description: Flooring: Laminate,Simulated Wood
Level: Lower
Dimensions: 10x10

Kitchen

Description: Flooring: Laminate,Simulated Wood
Level: Lower
Dimensions: 17x12

Living room

Description: Flooring: Laminate,Simulated Wood
Level: Lower
Dimensions: 13x10

Heating

Central

Cooling

Central Air

Appliances

Included: Dishwasher, Oven, Range, Refrigerator

Features

Ceiling Fan(s)
Has fireplace: No
Fireplace features: None

Interior area

Total structure area: 858
Total interior livable area: 858 sqft

Property

Parking

Total spaces: 2
Parking features: Two Spaces

Features

Levels: One
Stories: 1
Patio & porch: Concrete, Covered
Pool features: None

Lot

Size: 0.27 Acres
Dimensions: 65/60/197
Features: City Lot, Oversized Lot

Details

Additional structures: Apartment
Parcel number: 86627
Special conditions: None

Construction

Type & style

Home type: SingleFamily
Architectural style: Cottage
Property subtype: Single Family Residence

Materials

Vinyl Siding
Foundation: Slab
Roof: Asphalt,Shingle

Condition

Average Condition
Year built: 1950

Utilities & green energy

Sewer: Public Sewer
Water: Public

Community & HOA

Community

Subdivision: Salmen Addition

HOA

Has HOA: No

Location

Region: Slidell

Financial & listing details

Price per square foot: $128/sqft
Tax assessed value: $82,870
Annual tax amount: $1,238
Date on market: 6/5/2026

Estimated market value

Not available

Estimated sales range

Not available

$1,391/mo

Price history

Date	Event	Price
6/15/2026	Listed for sale	$110,000$128/sqft
Source: GSREIN #2562422 Report a problem
8/19/2020	Sold	--
Source: Public Record Report a problem

Public tax history

Year	Property taxes	Tax assessment
2025	$1,238 -6.1%	$8,287
2024	$1,318 +55.6%	$8,287 +70.7%
2023	$847	$4,856
2022	$847 +17.7%	$4,856
2021	$720 +0.5%	$4,856
2020	$716 -21.4%	$4,856 -19.4%
2019	$911 -0.4%	$6,025
2018	$914 -15.6%	$6,025
2017	$1,083 -2.2%	$6,025
2016	$1,107	$6,025
2015	$1,107 +0.4%	$6,025
2014	$1,103 -0.2%	$6,025
2013	$1,105 +0.7%	$6,025
2011	$1,098 -0.2%	$6,025
2010	$1,100	$6,025