Markets and Sectors


Sewall Forestry & Natural Resource Consulting, LLC Established in 1880, Sewall Forestry & Natural Resource Consulting (FNR) is the oldest forestry consulting firm in North America. Sewall FNR serves private and public clients on five continents and is recognized globally as a leader in forest resource valuation and analysis. With Sewall natural resource professionals at […]

Program & Construction Management

Project services from concept to reality. Sewall provides a wide range of program and construction management services to assist owners with the delivery of essential projects.  We work with our clients to understand their needs from conception through start-up and help them navigate through the myriad of complex decisions that impact the successful delivery of […]


Developing the business of infrastructure. Whether through site design or property development surveying, Sewall has been offering expertise to critical infrastructure for more than 140 years. Our infrastructure services range from feasibility and site selection analysis to construction administration and asset management. We offer full-service planning, design, survey, permitting, and construction management services that are […]


Energizing the future. Whether through natural gas or renewables, Sewall has been offering expertise to critical infrastructure for more than 140 years. Our Utilities team provides engineering, geospatial, surveying, remote sensing/reality capture, and modeling services to support a variety of utility and energy markets, including natural gas, wind farms, solar farms, biomass, water, wastewater, and […]


Connecting people in a smarter way. Whether providing traditional or specialized transportation engineering services, Sewall has been leading the industry in innovation and sustainability for more than 140 years. The requirement to maintain and improve our aging infrastructure is no small task. And those charged with maintaining and expanding our transportation system work constantly with […]


Sewall has been a key player in driving the adoption of renewable energy technologies and helped position Maine as New England’s leader in wind power. Our engineers supported the development of the first commercial wind project in Maine and the largest commercial wind farm in New England. Sewall continues to provide siting assistance, civil design, […]


Interest in and use of biomass as a sustainable supply of energy have grown dramatically in the US, Canada, and Europe during the past five years. More energy firms, government and provincial agencies, and industrial landowners are exploring the potential for biomass produced from North American timberlands to reduce coal, electric, and petroleum consumption, and […]


The Challenge During the last five years, the demand for renewable energy resources has increased dramatically, increasing the need for accurate information and analysis on potentially available resources, optimal siting, and environmental impacts and benefits. The success of renewable energy development depends on a careful preliminary assessment, planning, permitting, site and facilities development, and asset […]

Water & Wastewater

Sewall engineering professionals provide public (municipalities, water utilities, state agencies) and private clients with a broad range of water, wastewater, and stormwater planning and engineering services, including permitting, modeling, design, construction administration, and inspection. We also develop utility GIS and asset maintenance management systems and perform Phase I Environmental Site Assessments (ESAs). Water Supply, Treatment, […]