What Langan Engineering & Environmental Services does

Langan Engineering & Environmental Services is a US-headquartered engineering and environmental consulting firm founded in 1970 and based in Parsippany, New Jersey. The firm employs approximately 2,300 professionals across 58 US offices in 23 states (plus Washington D.C. and Puerto Rico) and four international offices (London, Dubai, Calgary, Panama City) operating under its wholly owned subsidiary Langan International. Since October 2023, the firm has been private equity-backed by TowerBrook Capital Partners.

The firm delivers an integrated multidisciplinary service portfolio spanning site/civil engineering, geotechnical engineering, environmental services and remediation (including specialized PFAS treatment), traffic and transportation engineering, surveying and geospatial, landscape architecture, waterfr

Name

Langan Engineering & Environmental Services

Legal name

Langan Engineering, Environmental, Surveying, Landscape Architecture and Geology D.P.C.

Website

https://langan.com

Company type

Private

Founded year

1970

Operating status

Operating

Headcount range

1,001–5,000 employees

Short description

Langan is a US-headquartered, PE-backed engineering and environmental consulting firm with ~2,300 professionals across 58 US offices and 4 international locations, delivering integrated site/civil, geotechnical, environmental, traffic, surveying, and PFAS remediation services to enterprise clients in data centers, real estate, energy, government, and logistics.

Ownership category

akta.pro rank

Product category

Engineering & Environmental Consulting Services

NAICS

Architectural, Engineering, and Related Services (5413), Environmental Consulting Services (54162), Landscape Architectural Services (54132)

SIC

Services-Management Consulting Services (8742)

akta.pro primary industry

Water, Wastewater & Stormwater Compliance (BPAHAJAJ)

akta.pro secondary industry

Circularity Consulting & Program Management (EPR, Design-for-Circularity, LCA) (EUAIANAH)

Keywords

• Engineering consulting services
• Environmental remediation services
• Geotechnical engineering services
• Site civil engineering
• GIS surveying services

Headquarters

HQ city

Parsippany

HQ country

United States

HQ region

North America

Offices29 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. Engineering & Environmental Consulting Services: Langan generates revenue through project-based consulting and engineering service engagements. Services include site/civil, geotechnical, environmental, energy, earthquake/seismic, traffic & transportation, surveying/geospatial, landscape architecture, land use planning, waterfront & marine, digital solutions, environmental compliance, and EHS management. Revenue is driven by long-term client relationships and recurring project work across commercial, industrial, residential, and government sectors. The firm is a professional services organization with no hardware or product sales component.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels6 records

Core offering

Langan provides project-based engineering and environmental consulting services delivered by its own professional staff across site/civil engineering, geotechnical, environmental, energy, traffic & transportation, surveying/geospatial, landscape architecture, land use planning, waterfront & marine, and seismic engineering disciplines. The firm also delivers a Digital Solutions platform offering GIS-based site selection, data management & analytics, EHS management & compliance, and asset & facility management services. Specialized practices include PFAS remediation using in-situ treatment technologies, demolition engineering, and data center engineering for hyperscalers and colocation developers.

Product overview

Langan Engineering & Environmental Services is a premier engineering and environmental consulting firm offering a comprehensive suite of professional services organized around core engineering disciplines (Site/Civil, Geotechnical, Environmental, Energy, Traffic/Transportation, Surveying/Geospatial) supported by specialized practices (Landscape Architecture, Waterfront/Marine, PFAS Remediation, Seismic Engineering, Demolition, Sustainability Advisory, Cultural & Heritage Management). The firm operates a Digital Solutions platform providing GIS, Data Management & Analytics, and Asset & Facility Management services. The service portfolio spans land development, environmental compliance and remediation, infrastructure design, and technology-enabled solutions for markets including commercial, residential, industrial, healthcare, government, and data centers. Langan has pursued an active acquisition strategy to expand geographic presence and specialized capabilities, including recent acquisitions of Kirkman Engineering (Texas land development), ATR Engineering (Houston civil engineering), Navix Engineering (data center market), and Robert Stephen Consulting.

Differentiator

Problem solved

Functional benefit

Products and services

• Site/Civil Engineering Engineering service covering site development, land development, and civil infrastructure design for commercial, industrial, residential, and mixed-use projects. Delivered by Langan professional staff across 58 U.S. offices.
• Geotechnical Engineering Foundation design, soil analysis, and geotechnical investigation services supporting building and infrastructure projects, including seismic and pile capacity expertise.
• Environmental Services Environmental assessment, remediation, and compliance services including PFAS treatment, land recycling, and environmental impact studies for development and infrastructure projects.
• Energy Services Engineering services for energy projects including power transmission, oil and gas sector support, and renewable energy infrastructure.
• Traffic & Transportation Engineering Transportation planning, traffic engineering, and infrastructure design for highways, roadways, and transportation networks.
• Surveying/Geospatial Land surveying, GIS mapping, geospatial data collection, and spatial analysis services supporting site selection and engineering projects.
• Environmental Compliance Regulatory compliance services ensuring projects meet federal, state, and local environmental standards and permitting requirements.
• EHS Management & Compliance Environmental, Health, and Safety management systems and compliance consulting for industrial and commercial clients.
• Landscape Architecture Landscape design and planning services for commercial, residential, and public spaces with focus on sustainable design.
• Sustainable Design Sustainable development consulting integrating environmental considerations into project design and construction.
• Waterfront & Marine Engineering Engineering and design services for waterfront structures, marine terminals, and coastal development projects.
• PFAS Remediation Specialized remediation services for PFAS (per- and polyfluoroalkyl substances) contaminants using granular activated carbon, ion exchange resins, and in-situ stabilization methods as alternatives to pump-and-treat systems.
• Digital Solutions Technology-enabled consulting solutions including systems & development, GIS, data management and analytics, EHS management & compliance, and asset & facility management services.
• Geographic Information Systems (GIS) Consulting GIS technology consulting for site selection, spatial analysis, and mapping services, leveraging Esri ArcGIS to reduce data center site analysis time from several hours to 3–4 minutes.
• Data Management & Analytics Data collection, management, and analytical services supporting engineering and environmental projects, delivered as part of the Digital Solutions platform.
• Asset & Facility Management Digital consulting services and tools for managing and monitoring physical assets and facilities throughout their lifecycle.
• Earthquake/Seismic Engineering Seismic analysis and earthquake-resistant design services for buildings and infrastructure in seismically active regions.
• Geologic Hazards Services Assessment and mitigation services for geologic hazards including landslides, ground movement, and seismic risks.
• Land Use Planning Planning services helping clients navigate zoning, land use regulations, and development approvals.
• Natural Resources & Permitting Environmental permitting and natural resource management services for development projects.
• Demolition Services Demolition engineering and design services for building and structure deconstruction.
• Sustainability Advisory Services Consulting services helping clients achieve sustainability goals and implement environmentally responsible practices.
• Cultural & Heritage Management Services for managing cultural resources and heritage considerations in development projects.
• Data Center Engineering Services Integrated engineering services for hyperscale and colocation data center facilities, including site/civil selection, GIS-driven analysis, geotechnical, environmental, and infrastructure support — expanded through the Navix Engineering acquisition to nearly 40 U.S. states.

Quantifiable outcome

• GIS site selection analysis time reduced from several hours to 3–4 minutes
• +3 more outcomes

Named customers11 records

Segments6 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

AI capability3 records

Feature3 records

Partnerships

One partnership is on record.

• EsrisignificantTechnology or IntegrationLangan leverages Esri's Geographic Information System (GIS) software for site selection and data center location analysis. Langan was recognized by Esri with an Implementation Award and Gold Partner Status, reflecting its advanced use of Esri's ArcGIS platform. The GIS tools have reportedly reduced Langan's data center site analysis time from several hours to 3-4 minutes.

Scale indicators8 records

Recent moves7 records

Expansion highlights6 records

Broad incumbents

• AECOM: One of the largest global engineering and environmental consulting firms, offering site/civil, geotechnical, environmental, and program management services across the same verticals (data centers, tall buildings, transportation, energy). Overlap is direct but AECOM's scale and federal/government backlog make it a much larger incumbent competitor for mega-deals.
• Jacobs Solutions: Global engineering, environmental, and program management firm competing with Langan in site/civil, environmental remediation, transportation, and infrastructure. Jacobs' larger scale and critical mission solutions portfolio position it as a broad incumbent on enterprise and government work where Langan also competes.
• WSP Global: Global professional services consultancy competing in environment, geotechnical, transportation, and buildings. WSP's acquisition-driven expansion mirrors Langan's strategy but at a much larger scale and broader service portfolio, making it a key incumbent competitor on integrated multi-discipline pursuits.

Direct peers

• Tetra Tech: Leading consulting and engineering firm with deep specialization in water, environment, and sustainable infrastructure — overlapping directly with Langan's environmental, site/civil, and EHS practices. Both firms serve federal, commercial, and energy clients with comparable integrated delivery models.
• Stantec: Global engineering, environmental, and architecture firm with comparable service lines including geotechnical, environmental services, transportation, and buildings. Stantec's data center, water, and community development practices overlap materially with Langan's strongest growth verticals.
• Arcadis: Design and consultancy firm with significant overlap in environmental remediation, water, and buildings services. Arcadis' IBI acquisition expanded its buildings and data center capabilities, directly mirroring Langan's Navix-driven push into hyperscale site/civil.
• Terracon Consultants: US-focused engineering consulting firm with strong overlap in geotechnical, environmental, and construction materials engineering. Terracon's similar scale, employee-owned heritage, and service mix make it one of the closest US-only comparables to Langan.
• Haley & Aldrich: Mid-size engineering and environmental consulting firm with deep overlap in geotechnical, environmental, and brownfield redevelopment services. Highly comparable in service mix and client base to Langan, particularly in the Northeast and on complex urban redevelopment.
• GHD: Global employee-owned engineering, environmental, and construction services firm with comparable multidisciplinary model. GHD's water, environment, and property practices overlap directly with Langan's environmental compliance and site/civil work, particularly on data center and urban development projects.
• Kleinfelder: Engineering, environmental, and construction services firm with similar mix of geotechnical, environmental, and infrastructure services. Comparable in scale and service model to Langan, with overlapping client base in transportation, water, and commercial real estate.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks7 records

Key highlights7 records

Customer concentration

• Xx.com/langanengenv
• LinkedInlinkedin.com/company/langan-engineering-&-environmental-services-inc
• Instagraminstagram.com/langanengenv

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles17 records

Subsidiaries8 records

Funding overview

Funding rounds3 records

Investors1 record

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A4 records

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Langan Engineering & Environmental Services