Our Personality

We are visualizers, artists, and pragmatics. At D|A we value our clients, and believe in easy, open communication. We strive to improve the habitats where we live and work.

We believe in community, and the importance of actively supporting organizations and individuals in our hometown of Portsmouth, New Hampshire and all across New England. We serve as leaders and members of local and national professional organizations. Every member of our team commits their time and talents to a wide range of civic groups, community service and volunteer work. 

Our studio culture includes mentoring and strategic growth. We listen, collaborate, and work to maximize the benefits of your investment.  Let's plan together.

Lisa DeStefano, AIA, LEED AP
Founder and Principal Architect

Juli MacDonald, AIA, LEED AP
Associate and Residential Studio Manager

Our Approach

D|A specializes in commercial and residential properties from initial design and conception throughout completion. As a full-service architectural firm, we work towards making your experience as efficient and successful as possible.  Founded in 1995 by our principal, Lisa DeStefano, D|A is a team of exceptionally experienced and educated creative professionals whose skillsets result in award-winning architecture in a variety of environments.  Our projects range from new construction and building additions to comprehensive renovation, modernization, rehabilitation, and historic preservation work. We are known for our expertise and success rate in the permit and approval processes throughout New England.

At D|A, integration is key, as we believe in a whole building approach. We balance ambiance with functionality, and design with atmosphere, to create an impact. We choose materials to complement, not compete, with your structure’s personality and will utilize your space and layout while adding the finer accents to complete its purpose.  Sustainable design is our standard, and our collaborations with owners, consultants and contractors result in energy efficient, healthy, and comfortable buildings that age well.

At D|A, we are dedicated to creating environments that function with efficiency, enhance productivity, and improve quality of life. We look forward to talking with you about your next design.  Let’s create together.