Kostmayer Construction, LLC

Slidell, LA

UEI: N7EFTTHARWS3
CAGE: 012M9
Primary NAICS: 237990 Other Heavy and Civil Engineering Construction
SAM.gov registration: Active through Dec 18, 2026

Company facts

Self-certified in SAM.gov: Self Certified Small Disadvantaged Business

For Profit Organization

Veteran Owned Business

Limited Liability Company
Entity structure: Partnership or Limited Liability Partnership
Other NAICS codes in SAM.gov: 236220 Commercial and Institutional Building Construction

332311 Prefabricated Metal Building and Component Manufacturing

332312 Fabricated Structural Metal Manufacturing
SAM.gov registration date: Feb 25, 2002
Physical address: 1080 Old Spanish Trail #14, Slidell, LA 70458, USA
Website: kostmayer.com
Founded: 1981
Employees: 11-50
Estimated annual revenue: $1M-$10M
Industry: Industrials

Capital Goods

Construction & Engineering
SIC code: 87 Engineering & Management Services
Profiles: LinkedIn

Registration and certifications come from SAM.gov and the SBA; company details from public web sources. Updated Dec 22, 2025.

Contract awards

Award	Agency	Obligated	Awarded
Replace SW pass range leading light pnum 3449003 HSCG8211CPMVA12	Coast Guard	$225,000	Feb 11, 2011
Construction of the dock replacement at pascagoula, mississippi for nmfs. DOCWC133F05CN1093	National Oceanic and Atmospheric Administration	$978,016	Apr 15, 2005
Purchase Order W912NR04P0124	Louisiana National Guard (ARNG)	$11,600	Apr 22, 2004
Definitive Contract W912P804C0001	ENDIST New Orleans (USACE)	$4,089,514	Oct 16, 2003
Definitive Contract DEAC9603PO92313	Office of Fossil Energy	$318,149	Jul 15, 2003

Latest 5 listed here. See the rest on GovTribe.

SBA capabilities narrative

From the vendor's SBA profile

Kostmayer has a full-service marine fabrication facility which enables us to prefabricate portions of our clients' structures off-site reducing time the dock or facility is shut down. Kostmayer Construction is the go-to marine construction company for petrochemical and industrial companies as well as municipalities along Louisiana's waterways. Our specialized expertise allows our team to perform complex, time-sensitive projects other companies can't do. Our team self-performs marine construction, mechanical piping systems, material handling systems, maintenance & emergency work, and heavy civil construction in Louisiana and across the Gulf South.

Quick answers

Is Kostmayer Construction, LLC registered in SAM.gov?

Yes. Kostmayer Construction, LLC's SAM.gov registration is active through December 18, 2026.

What is Kostmayer Construction, LLC's most recent federal award?

Kostmayer Construction, LLC's most recent federal contract award is Replace SW pass range leading light pnum 3449003 (HSCG8211CPMVA12), from Coast Guard, on February 11, 2011.

On GovTribe

See Kostmayer Construction, LLC's full federal record

Federal contract awards
Funding analysis by agency, NAICS and set-aside
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