Fuss and O’Neill

Fuss and O’Neill

Fuss and O’Neill

Fuss & O’Neill provides the solutions that clients need for their specialized projects. We provide the same focus and expertise to small, straightforward, single-discipline projects as we do to large, complex, multi-discipline ones.Headquartered in Manchester, CT and founded in 1924, the company has grown to include six regional offices, three LLCs and about 300 employees. Our professional staff maintains licenses and certifications across a wide range of engineering, planning, landscape architecture, design build, scientific and manufacturing disciplines.Over a 20-year period, offices opened along the East Coast. Additionally, clients required our staff to work on projects in all regions of the country as well as internationally.

Company details

146 Hartford Road , Manchester , CT 06040 USA
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Business Type:
Engineering service provider
Industry Type:
Environmental Planning
Market Focus:
Nationally (across the country)

This company also provides solutions for other industrial applications.
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Fuss & O’Neill is a full-service engineering consulting firm. Our qualified professionals take a disciplined approach to address the needs of our clients' organizations in both the public and private sectors. We deliver exactly what complex projects require, an integrated matrix of services across a broad range of scientific and engineering disciplines.

Our full service capabilities continue to expand as we embrace sustainable practices. We are corporate members of the United States Green Building Council (USGBC) and have more than 20 certified Leadership in Energy and Environmental Design Accredited Professionals (LEED AP). In addition, we are actively involved in the Congress for the New Urbanism (CNU), the leading organization promoting walkable, mixed-use neighborhood development, sustainable communities and healthier living conditions.

In the public sector, Fuss & O’Neill, Inc. and Fuss & O’Neill EnviroScience, LLC have been awarded Government Services Administration (GSA) schedules to provide engineering and environmental services to federal agencies.

While we continue to grow, expanding both our geographic presence and areas of expertise, our values have not changed. We seek clients and employees who value integrity, quality and professionalism; and believe that the success of our clients is inextricably linked to that of Fuss & O’Neill.

Fuss & O’Neill traces its roots back to 1924 when Hayden L. Griswold, Sr. started his own surveying practice. Griswold was a Rocky Hill native and 1916 civil engineering graduate of Cornell. He came to Manchester after serving in World War I to work as a surveyor for the Cheney Brothers Silk Manufacturing Company. Griswold Engineering grew into a father-son business and through the 1960's surveyed much of the Town of Manchester and the surrounding area.

The 1970's were a period of company growth, transitioning to additional services including land development, transportation and structures, municipal water and sewer systems, and water resources. Walter S. Fuss, a former Manchester Town Engineer and Public Works Director, joined the firm in 1967 and shortly thereafter the company became known as Griswold & Fuss. In 1973, another former Manchester Public Works Director, William O'Neill, joined the company. In the late 1970's, after the retirement of Hayden Griswold, Sr., the company changed its name once again, this time to the currently known Fuss & O'Neill.

By the early 1980's, the company was making its own name and had grown to over 40 employees. Continued growth included expansion into the emerging fields of environmental compliance and permitting, and site assessment and remediation.

On September 14, 1985, Hayden Griswold, Sr., the founder of Fuss & O'Neill, passed away at the age of 93. Two years after the death of Griswold, and a little more than 60 years after the founding of his company, Fuss & O'Neill renovated and moved into the former Cheney Brothers headquarters, where Griswold had once practiced his profession.

Regional growth and expansion was the next focus for the company. Over a 20-year period, offices opened along the East Coast. Additionally, clients required our staff to work on projects in all regions of the country as well as internationally.