NESEA Business Member Directory

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.

The US Heat Pump Summit is a comprehensive event for contracting firm owners and their teams. The Summit brings together behind the scenes business lessons from top contractors with the best technical trainers in the industry, all in a track based program to maximize your organization's value from attending the event. Reaching beyond typical training, the Summit hosts contractor-centered presentations and conversations with regulators, rebate providers and implementers, energy industry experts, members of the private equity investment community, and more. Summit attendees and sponsors consistently highlight the high quality of speakers and fellow attendees as a reason they're making this event a must attend each year.

We thrive on solving complex urban problems intelligently and pragmatically. From theoretical issues that frame policy to the practical implementation of architectural commissions, we develop a rigorous, research-based approach to finding the best answers. Our work yields fresh ways to think about how we develop and build our cities, presented with useful, compelling clarity (it’s why we’re called Utile).

Valley Home Improvement is a residential design/build remodeling company that has served the Pioneer Valley for over thirty years. We offer a single point of accountability throughout the design process. We help our clients solve simple and complex design issues to create spaces of lasting beauty and comfort. We serve clients within a 30-mile radius of Northampton, MA.

VGS is a leader in a growing effort to decarbonize North America’s gas infrastructure. In 2019, VGS announced a comprehensive plan to achieve Net Zero by 2050. VGS has made steady progress toward its goal. The organization continues to align its actions with existing and emerging statewide energy policy. These include increasing access to weatherization services for Vermonters, offering products that reduce fossil fuel use and cut greenhouse gas (GHG) emissions in customers’ homes, and developing alternative low- or no-carbon renewable supply sources to displace fossil gas.

Vermont Integrated Architecture (VIA) is a full-service architectural design firm. We strive to strengthen communities, support local economies, and sustain healthy environments while creating beautiful, functional spaces.

Warren Construction Group's guiding principle is to successfully plan and build each project to the highest possible level of satisfaction for both the client and architect. Our staff is comprised of talented, experienced craftsmen, carpenters, managers, and field personnel, who are dedicated to the development and realization of the commercial, institutional, and residential projects we undertake. We work with a broad spectrum of like-minded trades people and subcontractors who share our work ethic, who adhere to safe building practices, and who perform their jobs to our exacting specifications.

We provide an array of energy rating and renewable energy consulting services to single—and multi-family housing builders, including HERS, Energy Star, and PHIUS ratings.

We are a second-generation residential construction firm dedicated to building and remodeling high-quality, design-forward, sustainable homes. We focus on renovations, additions, and remodeling in the greater Somerville | Cambridge, Mass. area, Wenham, and the North Shore. We take pride in using the most advanced building techniques and materials available.