George Fellner

George Fellner, AIA, LEED AP, Principal, received his Bachelor of Architecture degree from Virginia Polytechnic Institute & State University and his Master of Architecture degree from The University of Florida.  After accumulating experience with a number of architectural firms in New York, Florida and Connecticut, Mr. Fellner formed Fellner Architects (FA) in 1987.  

Reinforcing his commitment to sustainable design, Mr. Fellner is a LEED AP (Leadership in Energy and Environmental Design - Accredited Professional) and FA is a member of the U.S. Green Building Council.  As a past Co-Chairman of the AIA CT Committee on the Environment, Mr. Fellner has lectured and written extensively on sustainable design issues and strategies, environmental subjects, with a focus on geothermal systems, as well as organizing programs, seminars, and workshops. Mr. Fellner has also taught as an Adjunct Professor, and was a guest critic at the University of Hartford, School of Engineering, Technology, and Architecture.

In terms of community involvement, Mr. Fellner is a past Chairman of the Haddam/East Haddam Division for the Middlesex County Chamber of Commerce, and a past Vice-Chairman of the East Haddam Planning and Zoning Commission.  He regularly gives presentations on architecture, the environment, and photography for community groups and organizations. In addition, Mr. Fellner's fine art photographs have been featured in a series of solo photo exhibitions in a number of Connecticut art galleries, as well as group shows in museums and galleries. His fine art photographs are also exhibited in a number of permanent art collections including the Yale School of Medicine, the Jackson Laboratory of Genomic Medicine at UCONN Health Center, and the NYC offices of Nature Genetics Journal.

Professional Affiliations

Registered Architect: State of CT
American Institute of Architects: Connecticut Chapter
AIA Connecticut - President (2017)
AIA Connecticut Board of Directors (2012-2018)
AIA New England Regional Council (2017)
Connecticut Architecture Foundation Board of Directors (2016-2020)
AIA Connecticut Committee on the Environment (Co-chair 2007-2015)
AIA Connecticut Committee on the Environment (2003-2020)
LEED AP BD+C - Leadership in Energy and Environmental Design - Accredited Professional
US Green Building Council
CT Green Building Council
University of Hartford, College of Engineering, Technology, & Architecture - Adjunct Instructor (2010-2012)
National Council of Architectural Registration Boards
Connecticut Trust for Historic Preservation
Haddam/East Haddam Chamber of Commerce
East Haddam Art League
New Britain Museum of American Art
Connecticut Academy of Fine Arts - Associate Member
Connecticut Valley Camera Club - Past President/Program Director
Connecticut Valley Camera Club


Mark Degnan

Mark Degnan, Assoc. AIA, Project Manager/Designer, received his Bachelor of Architecture degree from Syracuse University.  Prior to joining FA in 2009, Mr. Degnan accumulated 12 years of experience with architectural firms in Connecticut and New York.  He is a member of the Economic Development Committee and Citizens for Clean Groundwater in Haddam, CT.  Mr. Degnan has also been involved with Habitat for Humanity in Bridgeport, CT and Syracuse, NY.

Jeff Munsie

Jeff Munsie, Project Architect, received his Bachelor of Architecture degree from Wentworth Institute of Technology. Prior to joining FA in 2017, Mr. Munsie accmulated 22 years of experience with architectural firms in Connecticut. He is NCARB certified and continues to utilize his knowledge of architecture, technology, and construction.

Heidi Fellner

Heidi Fellner, Business Manager, received her Bachelor of Business Administration degree from Hofstra University.  Ms. Fellner has accumulated extensive experience in accounting and business administration in New York, Florida, and Connecticut.  She has worked with FA since 1987, assisting with business administration, accounting, bookkeeping, and marketing.