NESEA Business Member Directory

Terra Design-Build provides residential and light commercial design services for renovations, additions, adaptive reuse, new homes, building evaluations, and energy consultations. Our guiding principles are to use sustainable design principles, seek out earth-friendly material choices, and reduce fossil fuel use and carbon emissions. Owner/Architect Wendy Brown, AIA, has been involved in Berkshire County building since she started as a drafter for BETNR Construction at age 15 back in the 1980s. She's licensed in Massachusetts and Vermont. We prefer to have the Owner, Architect, and Contractor work as a team for collaborative results.

The Green Engineer, Inc. is a sustainable design consulting firm specializing in energy-efficient and sustainable design solutions for the built environment. Founded in 2005 by Christopher Schaffner, PE, LEED Fellow, the firm currently has a staff of 26, with 24 LEED-accredited professionals. Our team members consist of sustainability consultants and building performance analysts. Our expert team brings to the table experience and perspective from a variety of backgrounds, including engineering, architecture, construction, planning, development, and public policy. An Employee-Owned, Massachusetts Benefit Corporation and B Corporation.

We are a network of conscious, inspired innovation and change leaders who desire to make a difference in our world. We are interested in increasing awareness of self in service of our collective reality so that we may begin to bring our authentic self in all we do, live a more joyful and fulfilling life, and create a better world. Our consulting, coaching, and learning programs enable people at all levels to shift toward a more conscious and collective way of leading, one that more effectively leverages the strengths of individuals and their commitment to the success of the whole. Collective Leadership boosts collaboration, builds organizational agility and resilience, and creates deeper engagement with customers/stakeholders.

Established in 1991 by Founder and Principal Wayne Turett, The Turett Collaborative is a diverse, environmentally-conscious, modern architecture and interior firm based in Tribeca. The firm’s portfolio of work over three decades reflects its longstanding commitment to green building and design, advocating for innovative and sustainable solutions across both commercial and residential projects. In addition to the NESEA, the firm is a USGBC member organization. A licensed, LEED-credentialed architect, Turett is also an active member of ADPSR, which works for peace, environmental protection, ecological building, and social justice.

The Valle Group sets the standard for thoughtfully planned communities in southern New England. The company's special expertise is planning and creating communities of quality, energy-efficient homes and building and remodeling for homeowners.

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.

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.

Treehouse Design was founded in 1990 to provide architectural and construction management services for the needs of the vibrant, historically rich coastal communities of Cape Ann. Our company employs 20 individuals with a broad range of skills and experience, from architects and interior designers to construction managers and cabinet makers. Our office and workshop are based in Rockport, MA, where we take on a variety of residential projects. Our core focus is the design and construction of custom single-family homes, with a strong emphasis on sustainability, climate resilience, and enduring craftsmanship. We’re committed to building homes that are not only beautiful and functional, but also responsive to their environment and built to last

We are a woman-owned and operated full-service, 12 person architecture firm. As of 2024 we are also a Co-operative. At Trillium, we design intelligent, highly energy efficient and sustainable architecture and endeavor to cultivate beauty and delight. We are trained in - and keep apprised of - cutting edge building enclosure deign, ventilation, carbon and energy. 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.
We also have a branch company called SEED Homes that specializes in small Net Zero Modular homes and we are currently working on developing affordable and sustainable multi family housing.

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.

Uncarved Block is a design/build organization that combines historic building techniques with modern technology and an eye towards the artistic. We specialize in energy-efficient structures primarily built with local wood and stone.