Langan Engineering & Environmental Services, LLC
Parsippany-Troy Hills, NJ
- UEI
- DMSEFJNCRJ57
- CAGE
- 3E7Y0
- Primary NAICS
- 541330 Engineering Services
- SAM.gov registration
- Active through
Company facts
- Self-certified in SAM.gov
- Entity structure
- Corporate Entity (Not Tax Exempt)
- Other NAICS codes in SAM.gov
- SAM.gov registration date
- Physical address
- 300 Kimball Dr FL 4, Parsippany, NJ 07054, USA
- Website
- langan.com
- Founded
- 1970
- Employees
- 1K-5K
- Estimated annual revenue
- $500M-$1B
- Industry
-
- Industrials
- Capital Goods
- Construction & Engineering
- Civil Engineering
- SIC code
- 87 Engineering & Management Services
- Profiles
Registration and certifications come from SAM.gov and the SBA; company details from public web sources. Updated .
Contract obligations by fiscal year
| Fiscal year | Obligated |
|---|---|
| FY2027 To date | $0 |
| FY2026 | $276,346 |
| FY2025 | $0 |
| FY2024 | -$43,502 |
| FY2023 | $56,572 |
Top agencies by obligations
| Rank | Agency | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | Department of Transportation | $257,000 | |
| 2 | Department of Justice | $19,346 |
Contract awards
Latest 5 listed here. See the rest on GovTribe.
Contract subawards
| Prime contractor | Prime award | Amount | Awarded |
|---|---|---|---|
| The Mitre Corporation | 1331L523F13250486 | $99,293 | |
| HDR Kcct JV | 19AQMM24F2520 | $153,756 | |
| HDR Kcct JV | 19AQMM23F2544 | $129,026 | |
| Mills And Schnoering Architects, PC | 47PD0123F0016 | $9,429 | |
| Assurance Technology Corp | N0017320C2011 | $203,168 |
Latest 5 listed here. See the rest on GovTribe.
Similar vendors
| Vendor | Location | Primary NAICS |
|---|---|---|
| Mclane Environmental, LLC | — | 541620 Environmental Consulting Services |
| Halff Associates, Inc. | The Woodlands, TX | 541330 Engineering Services |
| NCE | Reno, NV | 541330 Engineering Services |
| Geologic Associates, Inc. | Ontario, CA | 541620 Environmental Consulting Services |
| J-U-B Engineers Inc. | Meridian, ID | 541330 Engineering Services |
About the company
Langan Engineering & Environmental Services, LLC is a premier engineering and environmental consulting firm established in 2003 that provides integrated solutions across transportation, environmental, and infrastructure projects for federal agencies. Based in Parsippany-Troy Hills, New Jersey, the firm operates as a for-profit limited liability company with substantial experience delivering specialized technical consultation and expert services to support federal project delivery and dispute resolution. Langan brings established capabilities in engineering and environmental expertise that address complex infrastructure challenges, construction claims, and litigation support requirements across multiple federal agencies and program areas.
Langan's federal contract work demonstrates a diversified portfolio focused on expert witness services and specialized technical consultation. Most recently, the firm received a $257,000 firm fixed-price purchase order from the Federal Highway Administration in November 2025 to provide groundwater expert support for a construction claim related to the California FLAP SR89(1) Truckee River Bridge project, with performance scheduled through December 2027 in Lakewood, Colorado. The company has also maintained an ongoing relationship with the U.S. Department of Justice Civil Division, receiving multiple purchase orders for expert witness services totaling over $45,000 across contracts awarded in February 2024 and November 2025, with work performed on a time and materials basis from its New Jersey headquarters. Beyond prime contract awards, Langan has served as a subcontractor on federal projects including environmental assessment work for Regional Innovation Technology Hubs under The MITRE Corporation as prime contractor for the Economic Development Administration, project development services under Machado and Silvetti Associates, Inc., and aging infrastructure assessment work under Assurance Technology Corp. All of Langan's identified federal contract awards have been made without set-aside designations, reflecting the firm's competitive positioning in providing specialized services across civilian federal agencies.
Quick answers
Is Langan Engineering & Environmental Services, LLC registered in SAM.gov?
Yes. Langan Engineering & Environmental Services, LLC's SAM.gov registration is active through March 4, 2027.
How much has Langan Engineering & Environmental Services, LLC received in federal contracts?
Federal contracts obligated $289,416 to Langan Engineering & Environmental Services, LLC in fiscal years 2023 through 2027.
What is Langan Engineering & Environmental Services, LLC's most recent federal award?
Langan Engineering & Environmental Services, LLC's most recent federal contract award is CA flap SR89(1) truckee river bridge groundwater expert support for construction claim (6982AF26P000002), from Federal Highway Administration, on November 19, 2025.
On GovTribe
See Langan Engineering & Environmental Services, LLC's full federal record
- Federal contract awards
- IDV awards
- Subcontracting relationships
- Funding analysis by agency, NAICS and set-aside
- Similar vendors