What Lennon, Smith, Souleret Engineering does

LSSE Civil Engineers and Surveyors, Inc. is a privately held civil engineering and surveying firm founded in 1985 and headquartered in Coraopolis, Pennsylvania. The firm operates 11 offices across southwestern Pennsylvania and Ohio, employing 170+ professionals and serving 2,800+ clients with 8,900+ completed projects over its 41-year history. LSSE delivers professional engineering and surveying services on a project-by-project basis across six vertical markets: Municipal, Commercial, Institutional, Industrial, Residential, and Utilities & Infrastructure. Its service portfolio spans civil site engineering, civil municipal engineering, civil environmental engineering (including potable water and wastewater facilities engineering), landscape architecture and planning, GIS, full-service land surveying, mining permitting, and grant and funding assistance.

The firm's technical stack combines conventional survey instrumentation with VRS equipment, drone/UAV surveys, and the ArcGIS Platform (including ArcGIS Online and mobile field data collection tools). A distinctive technology element is the partnership with McMahon Associates for distribution and application of TRAISR, a web-based, cross-platform GIS tool purpose-built for municipal asset management, infrastructure tracking, work order management, permit tracking, scheduling, budgeting, and forecasting. LSSE also operates a regulatory-navigation practice that has helped clients secure over $355 million in cumulative public funding through state and federal programs (CFA, DCED, PENNVEST, DCNR, CDBG, EPA, USDA RUS, FEMA/PEMA/ACOE, ARC, Ohio EPA WPCLF, PADEP Growing Greener), with $30 million awarded to LSSE clients in 2026 alone.

LSSE generates revenue through professional services engagements delivered via direct sales and project-based relationships. The go-to-market motion is sales-led, leveraging 11 regional offices, a corporate website with project inquiry forms, a twice-yearly newsletter, and contractor bid document portals. The firm operates as a network of specialized divisions built through acquisitions: Senate Division (acquired, established 1970, serving 50+ municipalities), Rabell Division (acquired May 2019), LSI Division (acquired 2025), and Fike Division (acquired 2025). Customers span municipal governments and authorities, regional universities and school districts, and named enterprise clients including Carnegie Mellon University, G.E. Additive, BASF Corporation, Columbia Gas, Giant Eagle/GetGo, Gordon Food Service, FedEx Ground, The Home Depot, Pennsylvania American Water, and Peoples Natural Gas. Pricing is quote-based with no public rates disclosed.

Name

Lennon, Smith, Souleret Engineering

Legal name

Lennon, Smith, Souleret Engineering, Inc.

Website

https://lsse.com

Company type

Private

Founded year

1985

Operating status

Operating

Headcount range

101–250 employees

Short description

LSSE Civil Engineers and Surveyors, Inc. is a privately held civil engineering and surveying firm founded in 1985, operating 11 offices across southwestern Pennsylvania and Ohio with 170+ employees serving 2,800+ municipal, commercial, industrial, institutional, residential, and utility clients.

Ownership category

akta.pro rank

Product category

Civil Engineering and Surveying Services

NAICS

Surveying and Mapping (except Geophysical) Services (541370), Landscape Architectural Services (54132)

SIC

Services-Engineering Services (8711), Services-Engineering, Accounting, Research, Management (8700)

akta.pro primary industry

Construction Management & Delivery (EPCM/CMAR/Design-Build Oversight) (EUANALAE)

akta.pro secondary industry

Construction Program Management (Multi-site/Portfolio) (IMAFAAAF)

Keywords

• Civil engineering services
• Land surveying services
• Municipal infrastructure engineering
• Site development engineering
• GIS asset management

Headquarters

HQ city

Coraopolis

HQ country

United States

HQ region

North America

Offices11 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Engineering and Surveying Services: Professional engineering and surveying services provided to municipalities, utilities, developers, and commercial clients on a project-by-project basis. Services include civil site engineering, municipal engineering, environmental engineering, landscape architecture, GIS, surveying, mining permitting, and grant funding assistance.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

LSSE provides professional civil engineering and surveying services to municipalities, utilities, developers, and commercial clients across southwestern Pennsylvania and the Tri-State region. Core offerings include civil-site engineering, municipal engineering, environmental/water and wastewater engineering, landscape architecture and planning, GIS and asset management, surveying (ALTA/NSPS, topographic, boundary, drone), mining permitting, and grant funding acquisition assistance. The firm delivers full project lifecycle support from planning and permitting through construction observation, with deep regulatory expertise in navigating state and federal infrastructure funding programs.

Product overview

LSSE Civil Engineers and Surveyors, Inc. is a civil engineering and surveying firm founded in 1985, offering a unified suite of infrastructure engineering services organized around core disciplines: Civil Site Engineering, Civil Municipal Engineering, Civil Environmental Engineering (encompassing Potable Water Facilities Engineering and Wastewater Facilities Engineering sub-categories), Landscape Architecture & Planning, Geographic Information Systems (GIS), Surveying Services, Mining Permitting, and Grant & Funding Assistance. The company operates through four specialized divisions—Senate (established 1970, acquired), Rabell (established 1981, acquired 2019), LSI (established 1988, acquired 2025), and Fike (established 1977, acquired 2025)—each contributing distinct regional expertise. The portfolio is delivered as professional engineering and surveying services rather than a software product, with over 170 employees serving municipal, commercial, industrial, institutional, residential, and utilities clients across southwestern Pennsylvania and the Tri-State region.

Differentiator

Problem solved

Functional benefit

Products and services

• Civil – Site Engineering

Quantifiable outcome

• Over $355 million in public funding acquired for clients through grants and low-interest loans
• +4 more outcomes

Named customers18 records

Segments6 records

Ideal customer profiles6 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature1 record

Partnerships

Eleven partnerships are on record, tiered core and minor.

• McMahon AssociatescoreTechnology or IntegrationLSSE has established a unique partnership with McMahon Associates for the distribution and application of TRAISR - a web-based, cross-platform GIS tool purpose-built for asset management, infrastructure tracking, work order management, permit tracking, scheduling, budgeting, and forecasting.
• Commonwealth Financing Authority (CFA)coreOthersState funding agency providing grants and low-interest loans for infrastructure projects. LSSE has extensive experience navigating CFA programs for client funding.
• Pennsylvania Infrastructure Investment Authority (PENNVEST)coreOthersState infrastructure financing agency providing grants and low-interest loans for water and wastewater projects. LSSE assists clients with PENNVEST application preparation and administration.
• Department of Community and Economic Development (DCED)coreOthersState agency providing community development funding programs. LSSE navigates DCED programs for municipal client funding.
• Department of Conservation and Natural Resources (DCNR)coreOthersState conservation agency providing grants for parks, trails, and recreation projects. LSSE assists with DCNR grant acquisition and administration for municipal clients.
• Community Development Block Grant (CDBG)coreOthersFederal block grant program for community development. LSSE assists municipalities with CDBG funding applications for infrastructure improvements.
• PADEP Growing GreenerminorOthersPennsylvania state environmental funding program. LSSE has experience with Growing Greener grants for environmental improvement projects.
• USDA Rural Utility Services (RUS)minorOthersFederal agency providing financing for rural utilities infrastructure. LSSE assists rural water and wastewater clients with RUS funding.
• FEMA/PEMA/ACOEminorOthersFederal and state emergency management agencies. LSSE provides engineering services for flood protection and emergency infrastructure projects.
• Appalachian Regional Commission (ARC)minorOthersFederal-state regional development agency for Appalachian region. LSSE assists with ARC grants for infrastructure in eligible areas.
• Ohio EPA Water Pollution Control Loan Fund (WPCLF)minorOthersOhio state financing program for water pollution control projects. LSSE assists Ohio clients with WPCLF applications.

Scale indicators7 records

Recent moves8 records

Expansion highlights5 records

Broad incumbents

• WSP: Global professional services firm with strong Mid-Atlantic infrastructure practice competing for civil, environmental, and water/wastewater programs. Active acquirer of regional engineering firms, including in Pennsylvania.
• AECOM: Global infrastructure consulting firm with substantial Pennsylvania presence pursuing large municipal, transportation, and water infrastructure contracts. Competes directly for larger programs where LSSE is also bidding.
• Stantec: Global engineering, architecture, and environmental services firm with significant Pennsylvania offices competing for the same municipal water/wastewater, civil-site, and infrastructure programs. Broad incumbent with greater scale and service portfolio.

Direct peers

• Buchart Horn: Mechanicsburg, PA-based multidisciplinary engineering and architectural firm serving public and private clients across the Mid-Atlantic with civil, structural, and environmental engineering capabilities — directly comparable in size, geography, and municipal focus.
• Herbert, Rowland & Grubic (HRG): Harrisburg, PA-headquartered civil engineering and surveying firm of comparable size serving municipalities, water/wastewater authorities, and developers across Pennsylvania. Closest direct peer given similar service mix, regional footprint, and municipal client base.
• Alfred Benesch & Company: Chicago-headquartered engineering firm with significant Pennsylvania operations offering civil, structural, environmental, and construction engineering services. Comparable in multidisciplinary civil engineering focus and public-sector client base.
• KCI Technologies: Sparks, MD-based engineering, surveying, and construction services firm serving transportation, utilities, and public-sector clients across the Mid-Atlantic. Comparable in size, service mix, and regional focus.
• TranSystems: Kansas City-headquartered engineering and consulting firm serving transportation, municipal, and industrial clients across the U.S. Comparable in civil engineering, surveying, and infrastructure service offerings.
• Pennoni Associates: Philadelphia-headquartered engineering firm with strong Pennsylvania presence offering civil, environmental, structural, and surveying services to municipalities, utilities, and developers. Comparable in service breadth and client mix, somewhat larger scale.
• GAI Consultants: Homestead, PA (Pittsburgh metro)-headquartered engineering and environmental consulting firm with strong Pennsylvania presence serving municipal, transportation, energy, and development clients. Strong geographic and service overlap with LSSE.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/profile.php

Revenue estimate

Valuation estimate

Number of profiles

Subsidiaries4 records

Funding overview

Funding rounds

Investors

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

M&A

Investments

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

Frequently asked questions about Lennon, Smith, Souleret Engineering