Principal

Doug is one of LDa’s cofounders, and his design experience and leadership have been invaluable to the growth of the firm. Doug’s wide range of experience includes residential work, primary & secondary schools, universities, and a variety of not-for-profit organizations. His passion for environmental preservation began long before the existence of LEED and was a major focus of his undergraduate studies. Since then, Doug has maintained his commitment to protect the environment and address the issues of climate change through his design of numerous sustainable projects.  

Treff is one of LDa’s cofounders and has achieved local and national recognition for his expertise in the merging of historic and contemporary aspects of New England residential and institutional architecture. His professional experience has focused on providing client-focused and context sensitive design and project management services. Treff is a creative leader in a collaborative search for appropriate design solutions and has designed multiple residences to LEED certifications.