Kostmayer Construction, LLC
Construction company in Slidell, LA 70458
About this company
Kostmayer Construction, LLC is listed as a construction company based in Slidell, Louisiana, in St. Tammany Parish. Federal motor carrier records list 4 drivers and 7 trucks for the company. It is one of 38 general contractors in ZIP 70458.
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Housing market around ZIP 70458
Figures describe the local area, not this company.
Typical home value$221,000−2.9% past year · +21% in 10 years
Typical rent$1,474+1.4% past year
12-month value outlook−0.6%Roughly flat
New homes permitted, 20251,096St. Tammany Parish
Days to sale agreement49New Orleans metro · 49 a year ago
Listings with a price cut25.3%New Orleans metro
Sale price vs list96.6%New Orleans metro
New construction sales78New Orleans metro, Aug · −18% from last year
Source: Zillow (home values, rent, outlook and metro sales), data through Sep 2026. Permits: U.S. Census Bureau.
Typical home value, last 10 years
Source: Zillow Home Value Index, Sep 2026.
Local building angle: St. Tammany Parish permitted 1,096 new homes in 2025. 28% of the homes in this ZIP were built since 2000.
Local figures are estimates from public records and Zillow housing data, updated regularly.