DUFFY DESIGN GROUP

FULL-SERVICE INTERIOR DESIGN / GREATER BOSTON & NEW ENGLAND

Four Decades.
Countless Design Stories.

Where Imagination Meets Precision

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—coordinating with builders, architects, and artisans to bring concepts to life in ways that feel cohesive, personal, and executed with care.

Residential Services

Your home is your sanctuary—a place where your life’s stories take shape. From room planning and lighting design to custom finishes and architectural millwork, we create environments that nurture, inspire, and evolve gracefully over time.

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Commercial Services

We create commercial environments that engage the senses, support functionality, and increase productivity. Every design honors accessibility and sustainability, ensuring spaces that are as inclusive and responsible as they are dynamic and enduring.

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Experience In
Every Detail

Dennis Duffy is known for designs that marry artistry with precision, shaped through collaboration with the region's top builders, architects, and craftsmen. From his studio in Boston's South End, he leads a practice dedicated to thoughtful, impactful design.

In 2025, Dennis was named president of the American Society of Interior Designers (ASID) New England Chapter, and continues to mentor and strengthen the design community he has helped shape.

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IN THEIR WORDS

"Dennis is an architect of designers. He's always imagining what's there. His technical skills are impressive but his artistic sensibility is where he excels. He's a true artisan in the classic sense."

- Chris B., Residential Client

If you're looking for a collaborative partner to translate your vision and transform your home, we'd love to talk.

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As Featured In

"With his precision for detail and vast resources, Dennis was able to work with me to create a unique blend of old and new that were finalized into an extraordinary outcome."

—Patricia H., Residential Client

"Dennis has an advanced understanding of the architecture of design, and there's an intentionality in everything he does. He is an amazing problem-solver and a true collaborator."

—Sasha D., Builder + Partner

"His sense of design is extraordinary. Some designers fall into patterns but Dennis always sees something unique in every project. He has a curious mind and lives for the challenge."

—Rob H., Commercial Client