Engineering consulting firms in Connecticut provide a variety of critical services, spanning across civil, transportation, electrical, and environmental sectors. These consultancies serve a diverse range of clients, offering solutions in engineering, design, and planning to enhance infrastructure and the built environment. The industry is adaptive, continuously evolving with technological advancements and sustainability demands. The future trends suggest a priority shift towards greener, energy-efficient solutions and digital advancement in design and implementation processes.


Top 25 engineering consulting companies in Connecticut

1. Fuss & O'Neill

  • Website: fando.com
  • Headquarters: Manchester, Connecticut, United States
  • Founded: 1924
  • Headcount: 201-500
  • Latest funding type: Grant
  • LinkedIn

Fuss & O'Neill is a full-service civil, transportation, and environmental consulting company. They provide a range of services including engineering, planning, design, and environmental assessment. Their expertise helps shape communities and improve their infrastructure.


2. Aerial Electric

Aerial Electric is an electrical engineering and consulting company specializing in servicing the Multi-Family Development (MDU) market. They offer a wide range of services including design, budgeting, final pricing, CAD, electrical engineering, lighting, communication and data wiring, fire alarm systems, security systems, power generators, key card access, CCTV systems, and lightning protection. They also provide performance and payment bonds upon request.


3. Consulting Engineering Services (CES)

  • Website: ceseng.com
  • Headquarters: Middletown, Connecticut, United States
  • Founded: 1994
  • Headcount: 51-200
  • LinkedIn

CES is a consulting engineering services company specializing in designing custom MEP/FP building systems for public and private clients across the United States. They offer sustainable and energy-efficient solutions, exceeding energy code standards. CES is known for their practical and inventive approach, delivering exceptional building performance proficiencies.


4. Errico Engineering, LLC

Errico Engineering LLC is a professional engineering consulting firm specializing in mechanical engineering services.


5. van Zelm Heywood & Shadford, Inc.

  • Website: vanzelm.com
  • Headquarters: Farmington, Connecticut, United States
  • Founded: 1930
  • Headcount: 51-200
  • LinkedIn

Van Zelm Heywood & Shadford, Inc. is an engineering company that provides a range of services. They specialize in designing and planning various projects, offering expertise in fields such as electrical, mechanical, and environmental engineering. With a focus on quality and innovation, they work with clients to deliver effective solutions.


6. Altieri Sebor Wieber LLC

Altieri Sebor Wieber LLC is a MEPF engineering company that provides sustainable design and engineering solutions for various sectors, including museums, educational institutions, and private residences.


7. VN Engineers, Inc.

  • Website: vnengineers.com
  • Headquarters: North Haven, Connecticut, United States
  • Founded: 1983
  • Headcount: 51-200
  • LinkedIn

VN Engineers is a multi-disciplined civil engineering consulting firm specializing in infrastructure, transportation, traffic, highway, planning, rail design, and construction inspection.


8. RZ Design Associates, Inc.

RZ Design Associates, Inc. is a leading consulting engineering firm providing design services for heating and air conditioning, ventilation, electrical, plumbing, fire protection, structural, power, lighting, and telecommunications systems.


9. Corrosion Probe, Inc.

CPI Engineering is a leading engineering consulting firm specializing in materials & corrosion, structural & mechanical rehabilitation, integrity testing, and project & quality management for various industries.


10. Luchs Consulting Engineers|DeCarlo & Doll Architects

  • Website: luchs.com
  • Headquarters: Meriden, Connecticut, United States
  • Founded: 1948
  • Headcount: 11-50
  • LinkedIn

Luchs Consulting Engineering is a comprehensive engineering firm specializing in civil, highway, traffic, structural and utility design, as well as architecture and inspection services. They offer reliable and responsive project delivery, solving unique infrastructure challenges for their clients.


11. RHS Consulting Design, LLC.

RHS Consulting Design is a multidisciplinary consulting engineering firm that provides quality and reliability in a wide range of engineering disciplines, including construction administration, structural design of buildings, and load rating analysis.


12. The Baxter Group LLC

  • Website: baxgroup.com
  • Headquarters: New Milford, Connecticut, United States
  • Founded: 1997
  • Headcount: 11-50
  • LinkedIn

The Baxter Group LLC is a technical design firm that collaborates with clients' creative teams and engineering departments to develop manufacturing-specific specifications, drawings, and budgets for their products.


13. Provost and Rovero, INC.

  • Website: prorovinc.com
  • Headquarters: Plainfield, Connecticut, United States
  • Founded: 1997
  • Headcount: 11-50
  • LinkedIn

Provost & Rovero is a multi-disciplinary professional services firm, providing technical services including civil engineering, mechanical engineering, structural engineering, architectural engineering, land surveying and design build construction.


14. Telesforo Consulting, LLC

Telesforo Consulting provides consulting services for federal, state, local and private entities in the areas of environmental and engineering reviews, hazard mitigation grants, construction and infrastructure projects, public assistance programs, and more.


15. Alpha Q, Inc.

  • Website: alphaqinc.com
  • Headquarters: Colchester, Connecticut, United States
  • Founded: 1964
  • Headcount: 51-200
  • LinkedIn

Alpha Q Inc is an engineering company that offers a wide range of services and solutions. They specialize in providing innovative engineering solutions to clients in various industries.


16. SecureTek Solutions

Securetek Solutions is a full-service recruitment firm specializing in Engineering and Technical recruiting services in the Aerospace/Defense, Energy, Environmental, and Architecture industries. They offer personalized services to job seekers and corporate clients.


17. BL Companies

BL Companies is an experienced provider of creative, integrated services related to architecture, engineering, environmental, and land surveying for public and private-sector clients in various markets. They specialize in land development, building design, and infrastructure projects, always prioritizing their clients' needs.


18. Samtech Consulting

Samtech Consulting Services is a professional services company catering to the IT needs of their clients. They provide a range of technical services, including I/T Enterprise Architecture, Disaster Recovery, and Cloud Computing.


19. Technology Resources, Inc.

  • Website: triservices.com
  • Headquarters: Glastonbury, Connecticut, United States
  • Founded: 1999
  • Headcount: 51-200
  • LinkedIn

Technology Resources Inc. (triservices.com) provides highly qualified IT professionals for businesses of all sizes. They help companies address variable workloads and project needs by offering planning, managing, and implementing solutions in network engineering, security, Internet-based application development, and technical support.


20. GM2 Associates, Inc.

  • Website: gm2inc.com
  • Headquarters: Glastonbury, Connecticut, United States
  • Founded: 1988
  • Headcount: 51-200
  • LinkedIn

GM2 is an engineering company that provides solutions for travelways and communities. They collaborate with clients and contractors to exceed project goals. With a holistic approach to risk, GM2 ensures the excellence of their services and the safety of their people.


21. Facilities Engineering Associates, P.C.

  • Website: feace.com
  • Headquarters: Farmington, Connecticut, United States
  • Founded: 1987
  • Headcount: 11-50
  • LinkedIn

Facilities Engineering Associates, P.C. (FEA) is a professional engineering firm specializing in the design and commissioning of mission critical facilities. With a national reputation and over 35 years of experience, FEA has become a trusted advisor and long-term partner for clients large and small.


22. Power System Design Llc

  • Website: psscs.com
  • Headquarters: Redding, Connecticut, United States
  • Founded: 1999
  • Headcount: 11-50
  • LinkedIn

Power System Solutions is a multi-disciplined consulting engineering firm that offers a variety of electrical engineering and consulting services for the Commercial, Industrial, Healthcare, and Mission Critical markets. They provide cost-effective design, commissioning, integration, infrastructure management, forensic analysis, expert reporting, and testimony for product defect, equipment failure, loss verification, subrogation, and legal defense.


23. CLA Engineers

CLA Engineers is a consulting firm specializing in all aspects of civil engineering. They provide services in civil, structural, inspection, and surveying for various clients in the private, institutional, public, commercial, and industrial sectors.


24. LANDTECH Consultants, Inc

LANDTECH is a full-service engineering and planning company specializing in large-scale mixed-use development projects. They offer services such as site planning, civil and structural engineering, design services, construction financing and management, marketing and branding, and permit coordination and management.


25. FFPS&Com

FFPS & COM is a specialized company in fire protection systems offering a wide range of services focusing on the Oil & Gas field, Power Generation, Water Treatment, Mining and Chemical Industries.


Want to find more engineering consulting companies?


If you want to find more companies that offer comprehensive engineering, design, and infrastructural solutions you can do so with Inven. This list was built with Inven and there are hundreds of companies like these globally.


With Inven you'll also get to know the company's:


  • Ownership: Which of these are private equity backed? Which are family-owned?
  • Contact data: Who are the owners and CEO's? What are their emails and phone numbers?
  • Financials: How do these companies perform financially? What are their revenues and profit margins?

...and a lot more!