Maine-Based Civil and Structural Engineering Firm

Trillium Engineering Group is a professional engineering consulting design firm with our Primary Greater Portland office located in Yarmouth, Maine, and our Mid-Coast Satellite office located in Rockport, Maine. We offer a variety of engineering design services to contractors, builders, facility managers, architects & architectural firms, state & city planners, and their varied projects in Maine, New Hampshire, Massachusetts and through Northern New England.

The engineering services Trillium Engineering Group provides include structural design, civil engineering, structural evaluations and observations, master planning and permitting, site design and boundary surveying.

We enjoy working with our clients through every stage of a project, from conceptual design, through to producing buildable, issued for construction design documents. Our projects include new construction, renovations, restorations of historic buildings, additions, commercial, residential and more.

We have experience working on all types of facilities including multi-residential and mixed-use facilities, healthcare buildings and hospitals, municipal facilities, housing facilities, historic buildings, educational including K-12 and higher education with colleges and university projects, industrial facilities, offices, commercial construction, residential construction, and civic facilities. Trillium Engineering Group’s professional engineers are here to navigate you through the design process with feasible, cost saving engineering design solutions for your construction project.