Gregg Gossens, AIA Tom Bachman, AIA Diantha Korzun, AIA LEED AP Jeff Stetter, AIA Jessica Thyme,  AIA, LEED BD+C AP Jessica Gardner Sarah Lanzit

Gregg Gossens, AIA Principal

Gregg is one of the founding partners of GBA. He is a committed believer of a collaborative creative process and the ability of design to transform and enhance communities.

Gregg received a Bachelor of Science from the University of Wisconsin Milwaukee School of Architecture and Urban Planning in 1978, and a Master of Architecture from the University of Minnesota in 1980. Gregg is active in both professional and civic organizations. He has been the past president of the Vermont Chapter of the AIA and currently serves on the board of directors of Montpelier Alive. Gregg is also an Adjunct Professor at the Norwich University School of Architecture and Art.

Gregg can be reached at

Tom Bachman, AIA Principal

As a founding partner of gbA, Tom is strongly committed to Vermont and New England communities and citizens. He believes architecture is a vehicle to connect people and places, and, for over thirty years, has enjoyed designing affordable housing projects, schools, libraries, and other community resources across New England. His projects’ successes can be attributed to not only building design, but also the cultivation of strong client/architect/contractor relationships.

Tom has been an active member of Vermont AIA since 1990. He served as Vermont AIA President in 2013 and sat on the Executive Board of AIA New England Chapter the same year. Tom has volunteered at the Central Vermont Good Samaritan Haven Homeless Shelter for over twenty years and currently serves as Treasurer on the Board of Directors.

Tom received a Professional Architectural Degree from the University of Cincinnati before migrating to Vermont.

Tom can be reached at

Diantha Korzun, AIA LEED AP Principal

Diantha is a principal of GBA Architecture and Planning, and has worked as an architect in firms in Washington, Wyoming, Colorado, and Vermont for the past 20 years. Diantha is committed to socially conscious projects and the creation of beautiful, sustainable buildings that are suited to their environments. She believes architects can create positive change in communities through design that is both creative and thoughtful.

Diantha received a Masters of Architecture from the University of Washington and a Bachelor of Fine Arts, with a minor in European Studies, from Carnegie Mellon University. She has been an active member of AIA, serving as the AIA Vermont Chapter President in 2012 and the AIA New England Chapter President in 2015.

Diantha is also on the architectural advisory board Edge of Seven, a non-profit that seeks to bring architectural projects and infrastructure improvements to developing countries in order to give women and girls increased access to education, health care, and economic resources. Most recently, in November, 2013, she went to Basa, Nepal, with other volunteers to assist in constructing an earthbag secondary school.

Diantha can be reached at

Jeff Stetter, AIA Architect

Jeff has been with gbA since 1994, and was drawn to the firm by its governing focus on design and its emphasis on collaboration. The size and environment of the firm allows team members to work on a project from conception to warranty walk through, and highlights the idea that design happens not just in the big moments, but in all of the seemingly small decisions.

Jeff became interested in building and design at a very early age. His father was a carpenter contractor, and his three brothers have worked together to continue the business started by their father in 1958. Between his father’s work, and the Baker Hunt Foundation art classes he took while growing up in Kentucky, he knew that architecture would be the perfect career field for him. The synthesis between art and construction seemed like a natural fit, and his designs are still influenced by the days he spent working with his family over 20 years ago, as well as by his time at the University of Cincinnati.

Jeff can be reached at jstetter@gbarchitecture

Jessica Thyme, AIA, LEED BD+C AP Architect

Jessica has called Montpelier home since 2007, and has been a part of the gbA team for over 10 years. Living in central Vermont allows Jessica to see on a regular basis many of the spaces that gbA has helped to create, and she greatly enjoys working with the team to enrich communities with the enduring art of architecture or preserve that richness. She is constantly seeking ways to further improve the built results and collaborative process.

Jessica attended the University of Kansas- School of Architecture & Urban Planning to receive a Bachelor of Architecture. She is a licensed architect in Vermont and maintains an NCARB Certificate which allows licensure in other states and LEED AP credentials. Her continued education focuses on increasingly sustainable building practices.

Jessica can be reached at jthyme@gbarchitecture

Jessica Gardner Architectural Designer

Jess’s interest in architecture and construction began at a young age. Between helping to renovate her family’s house in Western Massachusetts, and the never-ending supply of bricks her father would bring home from his job at Lego, her love for designing and creating buildings was inevitable. After attending Wentworth Institute of Technology, Jess joined gbA in October of 2015, and the firm’s emphasis on collaboration and design has allowed her to follow her passion for finding creative solutions to design problems, as well as to continue to learn about architecture and construction.

Sarah Lanzit

Sarah Lanzit recently joined the gbA team as the Office Manager, when she and her husband moved to Barre, Vermont. Though Sarah grew up in Boston, she has been visiting Barre, where her grandfather worked doing sandblasting in the granite industry, her entire life. Sarah has four years of experience in Administration and Office Management, and previously worked for the Lieutenant Governor of New York State. gbA’s culture of collaboration and cooperation has made the transition easy, and Sarah is looking forward to getting to know the team and expanding her knowledge of architecture and design.

Sarah received her Bachelor of Arts in English, with a minor in Anthropology, from Union College, in 2013.

Sarah can be reached at