Duffy Design Group

Three decades.
Countless design stories.

Experience in every detail

Full-Service Interior Design

Boston-based Duffy Design Group creates spaces of beauty and purpose, thoughtfully tailored to each client’s vision and the unique character of the architecture. We approach every project as a collaborative journey—listening closely, refining ideas, and guiding the process from the first sketch to the final reveal. With meticulous attention to detail and seamless coordination with builders, architects, and artisans, we bring design concepts to life in ways that feel cohesive, personal, and executed with care.

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Interior Design Services

Residential

Your home is your santuary. We create residential environments that nurture, inspire, and evolve gracefully over time.
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Commercial

Bring your brand to life with a space that engages the senses, supports functionality, and increases productivity.
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Design process

Behind every beautiful space is disciplined coordination. With skill, oversight, and creativity, we ensure that every element is executed with care.
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Three Decades. Countless Design Stories.

DENNIS DUFFY, ASID, LEED AP (BD+C)

Over the past three decades, Dennis Duffy has built a reputation for designs that marry artistry with precision, and for his collaborative work with the region’s top builders, architects, and craftspeople. From his studio in Boston’s South End, he leads a revitalized practice dedicated to thoughtful, impactful design.

In 2025, he was named president of the American Society of Interior Designers (ASID) New England Chapter, continuing his commitment to mentoring and strengthening the design community he has helped shape.