NESEA Business Member Directory

The NESEA Business Member Directory includes all organizations that are NESEA Business, Academic, and Non-Profit/Government Members.  Please let people know that you learned about their services from the directory.

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  Industry Leader NESEA Member  

Thornton Tomasetti

14 York St., Ste. 201
Portland , Maine 04101
Phone: (207) 245-6060

Thornton Tomasetti collaborates on the design of sustainable buildings to provide innovative solutions that greatly reduce operational and embodied carbon and contribute to more resilient buildings and communities. Using whole building environmental and advanced energy analysis, we’ll help you make sure your buildings are performing at the highest level for optimal operational performance and occupant comfort. Our multidisciplinary staff consults on green building certifications, including Passive House Certification, Net Zero Energy Buildings, Living Building Challenge design, Embodied Carbon Optimization, and BECx Commissioning.

Sectors: Commercial, Institutional, Industrial, Multifamily
Service Area: Entire Northeast Region
Professional Specialties: Certification/Commissioning, Consulting, Energy Auditing, Energy Modeling, Engineering, Net Zero, Passive House


525 Massachusetts Ave., Ste. 204
Acton , Massachusetts 01720
Phone: (978) 263-6019

Thoughtforms Corporation specializes in building high-end custom homes and unique institutional buildings in eastern Massachusetts. Clients trust Thoughtforms to deliver custom quality in a transparent and informative way and to be a long term partner. The quality clients expect extends far beyond the level of finish and what can be seen in the here and now and includes the health and comfort of the indoor environment, energy use, durability, and technology, among other elements.

Sectors: Institutional, Single Family
Service Area: Massachusetts, New Hampshire
Professional Specialties: Carpentry/Cabinetry, Construction Management, Consulting, Passive House, Remodeling/Renovation

Threshold Building Co.

PO Box 103
Shelburne Falls , Massachusetts 01370
Phone: (413) 522-7949

With dedication to craft, people, and place, Threshold Building Co. offers the highest quality finish work, timber frames, and high-performance buildings to the community of Western Massachusetts and beyond. We lead a committed client, a forward-thinking design team, talented builders, and excellent subcontractors to complete projects with integrity and beauty. These projects combine form and function for how people live today, providing durability for the future. Threshold’s mission is to provide Western Massachusetts with comprehensive building services focusing on quality craftsmanship, sustainable building practices, and clear customer communication.

Sectors: Single Family
Service Area: Massachusetts
Professional Specialties: Construction Management, Deep Energy Retrofit, Design/Build, Remodeling/Renovation, Timber Framing

TimberHomes Vermont

21 Fork Rd.
Montpelier , Vermont 05602
Phone: (802) 685-7974

We specialize in designing and building natural, soulful, resilient and energy efficient homes, timber frames, tree forms, scribe work, Vermont materials, net zero homes, timber framed solar pavilions, barns & outdoor structures, spiral stairs & compound roofs.

Sectors: Single Family
Service Area: Vermont
Professional Specialties: Construction Management, Design/Build, Net Zero, Timber Framing

  Midsize NESEA Business Member  


1 Main St.
Madison , Maine 04950
Phone: (508) 651-6897

TimberHP by GO Lab, Inc. is a privately held, Maine-based building products corporation founded in 2017 to develop and manufacture wood fiber insulation for the residential and light commercial construction markets. Wood fiberboard, batt, and blown-in high-performance insulation products are vapor open, renewable, recyclable, nontoxic, carbon sequestering, and, when manufactured here in America, cost-competitive with other popular insulation products. In 2023, GO Lab will become one of the first companies to make wood fiber insulation in North America at its manufacturing facility in Madison, Maine.

Sectors: Commercial, Institutional, Industrial, Multifamily, Single Family
Service Area: Entire Northeast Region
Professional Specialties: Insulation, Research

Timeless Architecture

147 School St.
Milton , Massachusetts 02186
Phone: (617) 696-6448

Mr. MacLean is an architect, educator, and licensed builder who began his career as a project manager with a number of large architectural firms in Boston before he started his own firm, Timeless Architecture, in 1988. He has been promoting and teaching green design for 35 years, beginning with the Boston Society for Architecture, where he served as co-chair of the Committee on the Environment (COTE), a sub-committee that promotes sustainable design in the New England Region. He has taught and developed ongoing curricula at the Boston Architectural College, Sustainable Design Institute, and Master’s program, as well as Wentworth Institute of Technology.

Sectors: Commercial, Institutional, Multifamily, Single Family
Service Area: Massachusetts
Professional Specialties: Architecture/Design, Design/Build, Historic Restoration, Net Zero, Remodeling/Renovation

Town of Needham

500 Dedham Ave
Needham , Massachusetts 02492
Phone: (781) 455-7550 ext. 347

The Building Design and Construction Department of the Town of Needham provides support for the Permanent Public Building Committee (PPBC) and helps advise and support the town manager on facility construction, planning, and operational needs. Town-owned building projects with a total cost of $500,000 or more that involves construction, reconstruction, enlargement, or alteration are assigned to PPBC to oversee unless the committee defers jurisdiction in the instance where a project includes little or no actual building construction.

Sectors: Institutional
Service Area: Massachusetts
Professional Specialties: Consulting

  Midsize NESEA Business Member  

Trillium Architects, LLC

16 Bailey Ave.
Ridgefield , Connecticut 06877
Phone: (203) 438-4540

We are a woman-owned and operated full-service architecture and design firm. At Trillium, we design intelligent quality architecture and endeavor to cultivate beauty and delight. We are trained in and highly aware of aesthetics and the human spatial experience. We believe in designing houses that you would be proud to leave your grandchildren - as unique as the people who occupy them and as beautiful as the natural world that surrounds them.

Sectors: Single Family
WMBE: Women or BIPOC Owned
Service Area: Connecticut, New York
Professional Specialties: Architecture/Design, Deep Energy Retrofit, Design/Build, Net Zero, Remodeling/Renovation

TruFund Financial Services

39 West 37th St.
New York , New York 10018
Phone: (929) 656-2565

Our mission is to promote and foster economic development within underserved communities and among disadvantaged populations. TruFund achieves this by providing innovative financial solutions that have TruImpact, revitalize communities, and create jobs. As a nonprofit, mission-driven entity, TruFund offers affordable loan capital to small businesses and nonprofit organizations that are financially viable but have difficulty accessing capital from banks or other conventional lenders. TruFund was established in 2005 as a national nonprofit organization that advances economic opportunity for people, businesses, and communities in need.

Sectors: Commercial, Institutional, Industrial, Multifamily, Single Family
WMBE: Women or BIPOC Owned
Service Area: New York
Professional Specialties: Finance

Truth Box, Inc.

460 Harris Ave., Unit 104
Providence , Rhode Island 02909
Phone: (401) 453-1300

We are a small architecture firm specializing in sustainable, energy-efficient design. We believe that high-quality design and green building go hand-in-hand, and higher performance does not necessarily mean higher costs. We work on a variety of project types - new single-family homes, mill building renovations, new multi-family, and commercial buildings - and we particularly enjoy urban infill and re-purposing old buildings.

Sectors: Commercial, Industrial, Multifamily, Single Family
Service Area: Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island, Vermont
Professional Specialties: Affordable Housing, Architecture/Design, Building Envelope, Design/Build, Development, Net Zero, Real Estate

Two Storey Building

89 Spectacle Hill Rd.
Bolton , Massachusetts 01740
Phone: (617) 438-0313

Two Storey Building, started by brothers Doug & Bill Storey in 2001 in Bolton, Massachusetts, is a custom builder of fine, energy efficient, high performance, healthy homes and remodeling projects, including whole house remodeling, kitchen, bathroom and basement remodeling, home additions, sunrooms, and decks. Two Storey Building built the first Silver LEED-certified home in Massachusetts, many Energy Star Certified and Stretch Code certified homes, and Doug Storey has received the Certified Green Professional(CGP) designation from the NAHB. Doug, Bill, Mat, and Camden are all Licensed Construction Supervisors and have taken OSHA 10-hour safety classes as well as the RRP class.

Sectors: Commercial, Single Family
Service Area: Massachusetts
Professional Specialties: Deep Energy Retrofit, Design/Build, Project Management, Remodeling/Renovation

UMass Amherst Building and Construction Technology Program

551 N. Pleasant St.
Amherst , Massachusetts 01003
Phone: (413) 545-1860

The Building and Construction Technology (BCT) program at UMass Amherst prepares undergraduate and graduate students for successful careers in the building industry. Academic programs offered:
Building and Construction Technology
Sustainable Building Systems
Sustainable Building Construction
Professional Education courses

Sectors: Commercial, Institutional, Industrial, Multifamily, Single Family
Service Area: Entire Northeast Region
Professional Specialties: Education, Research


The NESEA Business Member Directory is the premier referral resource for consumers and professionals looking for high-performance building and renewable energy professionals in the Northeast.

A listing in this directory results in increased visibility and referrals for our member organizations. The NESEA Business Member Directory is published online and in print (fall issue of BuildingEnergy magazine, circulation 3500). If you would like to be included in the directory, join NESEA today at one of our organization membership levels. Learn more.