Trillium Engineering Group

What Trillium Engineering Group does

Trillium Engineering Group is a privately held civil and structural engineering consulting firm headquartered in Falmouth, Maine, with additional offices in Rockland, Maine, and Madison, Wisconsin. Founded in 2021 by principals Eric Dube (30+ years of civil/structural engineering experience) and Tony Dumais (15+ years of structural engineering experience), the firm employs approximately 12 team members representing 95 collective years of industry experience. The firm is licensed in 20 states and primarily serves Northern New England, engaging contractors, builders, facility managers, architects, and state and city planners across eight market verticals: multi-residential, mixed-use, healthcare, municipal, educational, historic, industrial, and commercial.

The company's core offerings divide into two service lines: Civil Engineering Services — including site design, master planning, planning and permitting, construction services, topographic and boundary surveying — and Structural Engineering Services — including structural design, structural evaluation, historic preservation and restoration, structural observation, structural insurance evaluations, and pre-engineered metal building foundations (with over 200 such projects completed). The firm has developed differentiated expertise in Passive House design (delivering Maine's first Passive House-certified school), modular construction engineering (notably the Colby College Johnson Pond Houses), and historic preservation projects (including Maine's oldest African American church, the Abyssinian Meeting House, built 1828–1831).

Trillium generates revenue through project-based professional engineering fees, with pricing quoted per engagement rather than publicly disclosed or standardized. The go-to-market motion is enterprise field sales driven by professional relationships, collaborative partnerships with architects and contractors, and reputation-based referrals within the construction industry. Major clients include Archetype Architects, Stanmar Inc., Colby College, Phillips Academy, Worcester Academy, Friends School of Portland, Penobscot General Contractors, and the Abyssinian Meeting House. The firm holds no patents, has received no awards in the data set, has completed no funding rounds or M&A activity, and operates with no external institutional capital — consistent with a closely-held, management-led professional services practice.

Name

Trillium Engineering Group

Legal name

Trillium Engineering Group

Website

https://trilliumengineeringgroup.com

Company type

Private

Operating status

Operating

Headcount range

11–50 employees

Short description

Trillium Engineering Group is a privately held Maine-based civil and structural engineering consulting firm employing approximately 12 professionals and serving contractors, architects, developers, and municipalities across Northern New England with project-based design, evaluation, surveying, and historic-preservation services.

Ownership category

akta.pro rank

Product category

Civil and Structural Engineering Consulting

NAICS

Engineering Services (541330), Architectural, Engineering, and Related Services (5413)

SIC

Services-Engineering Services (8711)

akta.pro primary industry

Civil & Structural Engineering Consulting (BPAHAIAA)

akta.pro secondary industries

Construction Engineering & Constructability Consulting (BPAHAIAN), Testing, Inspection, Certification & Commissioning (TICx) Technical Services (BPAHAIAL), Architecture, Planning & Surveying (AIA, Planning, Land Surveyor CE) (EDAAALAG)

Keywords

• Civil engineering services
• Structural engineering design
• Pre-engineered metal buildings
• Historic preservation engineering
• Land surveying services

Headquarters

HQ city

Falmouth

HQ country

United States

HQ region

North America

Offices3 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Engineering Consulting Services: Professional engineering consulting fees for civil and structural engineering services. Projects range from small residential to large commercial, educational, and municipal developments. Revenue is generated through project-based fees for design, evaluation, and construction administration services.

Go-to-market motion1 record

Distribution channels4 records

Marketing channels4 records

Core offering

Trillium Engineering Group is a civil and structural engineering consulting firm delivering site design, master planning, planning and permitting, construction services, and land surveying under its Civil Engineering Services line, and structural design, structural evaluation, historic preservation, structural observation, insurance evaluations, and pre-engineered metal building foundations under its Structural Engineering Services line. The firm works primarily with architects, contractors, builders, facility managers, and state and city planners across Northern New England.

Product overview

Trillium Engineering Group is a professional engineering consulting firm offering civil and structural engineering services through two primary service lines: Civil Engineering Services and Structural Engineering Services. The Civil Engineering Services encompass site design, master planning, planning and permitting, construction services, and land surveying. The Structural Engineering Services include structural design, evaluation, historic preservation, structural observation, insurance evaluations, and pre-engineered metal building foundations. The firm has expertise across diverse market sectors including multi-residential, mixed-use, healthcare, municipal, educational, historic, industrial, commercial, parking garages, shoreland permitting and repair, and site planning. The company operates from offices in Falmouth and Rockland, ME, and Madison, WI, with Professional Engineers registered in 20 states.

Differentiator

Problem solved

Functional benefit

Products and services

• Civil Engineering Services Comprehensive civil engineering services including site design, master planning, planning and permitting, construction services, topographic surveying, and boundary surveying for commercial and residential projects throughout New England.
• Structural Engineering Services Structural engineering services encompassing structural design, structural evaluation, historic preservation, structural observation, structural insurance evaluations, and pre-engineered metal building foundations for clients in commercial, residential, educational, healthcare, industrial, and civic sectors.
• Pre-Engineered Metal Building Foundations Specialized structural engineering for pre-engineered metal building foundations, with expertise in concrete foundations across over 200 completed projects, serving contractors and developers of industrial, automotive, and commercial facilities.
• Historic Preservation and Restoration Engineering Historic preservation and restoration engineering services with specialized expertise in legacy structures such as the Abyssinian Meeting House (1828-1831), supporting architects, nonprofit owners, and preservation authorities.
• Land Surveying Services Land surveying services including topographic surveying and boundary surveying for projects in Maine, supported by more than 25 years of staff surveying experience.

Quantifiable outcome

• Over 200 pre-engineered metal building projects completed
• +2 more outcomes

Named customers19 records

Segments7 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

16 partnerships are on record, tiered core, major and minor.

• Kaplan Thompson ArchitectscoreStrategic or Co-development PartnerArchitecture firm partnership on Colby College Johnson Pond Houses project. Trillium served as structural engineer of record for the modular dormitory project comprising 4 high-performance dormitory buildings housing 200 students, completed in just 10 months.
• Archetype ArchitectscoreStrategic or Co-development PartnerLong-standing partnership with Archetype Architects on commercial projects including The Shops at Falmouth Center. Client testimonial notes Trillium has become an integral team member on many projects.
• Stanmar Inc.coreStrategic or Co-development PartnerDesign-build partnership on Worcester Academy South Campus Athletic & Recreation Center and PAN Athletic Center projects. Stanmar served as design-build entity with Trillium providing structural engineering.
• Consigli ConstructionmajorImplementation/ SI/ Consulting PartnerContractor partnership on Colby College Johnson Pond Houses modular construction project. Consigli Construction was the general contractor for the project designed and constructed in 10 months.
• Jewett ConstructionmajorImplementation/ SI/ Consulting PartnerContractor partnership on Route 44 Hyundai renovation/addition project and Berlin City Nissan project. Jewett Construction served as general contractor for automotive facility renovations.
• Penobscot General ContractorsmajorImplementation/ SI/ Consulting PartnerContractor partnership on multiple multi-unit residential projects including The Shops at Falmouth Center and The Sandpiper Apartments. Trillium provided structural engineering while Penobscot served as general contractor.
• Wright-Ryan ConstructionmajorImplementation/ SI/ Consulting PartnerContractor partnership on Preble Street Commercial Kitchen renovation project. Wright-Ryan served as general contractor for the civic project increasing meal production to 10,000 meals per day.
• Momentum Design GroupcoreStrategic or Co-development PartnerArchitecture firm partnership on The Sandpiper Apartments (63-unit affordable housing) project.
• Penobscot General Contractors (Dougherty Apartments)majorImplementation/ SI/ Consulting PartnerContractor partnership on Dougherty Apartments (63-unit, 69,000 sq ft affordable housing project in Portland, ME) with deep pile foundation due to poor soil conditions.
• Dimella ShaffercoreStrategic or Co-development PartnerArchitecture firm partnership on Worcester Academy South Campus Athletic & Recreation Center (72,000 sq ft athletic facility with basketball courts, swimming pool, and fitness area).
• Warren Construction GroupmajorImplementation/ SI/ Consulting PartnerContractor partnership on Friends School of Portland (first Passive House-certified school in Maine, 15,500 sq ft) with prefabricated roof and floor wood trusses.
• Fulcrum AssociatesminorImplementation/ SI/ Consulting PartnerContractor partnership on Pleasant Valley YMCA addition project (2,000 sq ft addition with glulam trusses matching existing building).
• Groen ConstructionmajorImplementation/ SI/ Consulting PartnerContractor partnership on The Howard (55,000 sq ft premium apartment building with 45 apartments and 2,300 sq ft restaurant space) using Hambro joists and cold form metal framing.
• Oceanside BuildersminorImplementation/ SI/ Consulting PartnerContractor partnership on Get Away House residential project in Harpswell, ME featuring steel beam-column moment frame for oceanfront views.
• CWS ArchitectscoreStrategic or Co-development PartnerArchitecture firm partnership on Abyssinian Meeting House historic preservation project (Maine's oldest African American church building, built 1828-1831).
• Irishspan IndustriesmajorImplementation/ SI/ Consulting PartnerContractor partnership on Robbins Lumber (20,000 sq ft prefabricated metal building constructed on top of existing building) and Crown Lifts industrial projects.

Scale indicators6 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Simpson Gumpertz & Heger: National engineering firm specializing in structural design, building envelope, and structural investigation with a Boston-area presence. Directly comparable in structural engineering expertise and the institutional / commercial client base.
• Sebago Technics: Maine-headquartered multi-discipline engineering firm offering civil, structural, surveying, and environmental services to public and private clients across Northern New England. Directly comparable to Trillium in geography, service mix (civil + structural under one roof), and target clients (developers, municipalities, institutions).
• Haley & Aldrich: Boston-headquartered engineering and environmental consulting firm offering structural, geotechnical, and civil services for buildings and infrastructure. Comparable in Northeastern focus and the institutional / developer client mix that Trillium serves.
• Hoyle, Tanner & Associates: New Hampshire-based engineering firm providing civil, structural, transportation, environmental, and construction services throughout New England. Mirrors Trillium's regional reach and mixed civil/structural offerings targeting institutional and municipal clients.
• Wiss, Janney, Elstner Associates: National structural and architectural engineering firm recognized for structural evaluation, historic preservation, and adaptive reuse — directly mirroring Trillium's evaluation, preservation, and adaptive reuse practices. A more established peer in the same specialty niches.

Broad incumbents

• Stantec: Global engineering, architecture, and environmental services firm with full civil and structural practices serving commercial, institutional, and infrastructure clients across North America. Competes for the same institutional and developer RFPs as Trillium, but as a much broader incumbent with deeper resources.
• Kleinfelder: U.S. engineering, scientific, and construction services firm with civil, structural, and geotechnical expertise for buildings, transportation, and utilities. A broader incumbent that competes with Trillium on commercial, institutional, and municipal building projects.
• GHD: Australia-headquartered professional services network with major New England offices delivering engineering, environmental, and advisory services to property, infrastructure, and water clients. Comparable in civil/structural capability and the same institutional/developer client base.
• CES Engineering / IMEG: Building engineering consultancy with civil, structural, mechanical, and electrical capabilities serving clients across the U.S. Comparable to Trillium in civil/structural integration and project types (commercial, educational, multifamily) at greater scale.
• WSP USA: Large multinational engineering consultancy with strong Northeast presence offering structural, civil, and facilities engineering for buildings, transit, and environment clients. Pursues similar higher-education, civic, and commercial building work in the region.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks7 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/trilliumengineeringgroup
• Instagraminstagram.com/trilliumengineeringgroup

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 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 Trillium Engineering Group