Interior Design and Architecture
Greg David Interiors (GDI) is a full-service interior design and architecture studio that helps clients reimagine their spaces and bring out their full potential—through thoughtful planning, creative solutions, and beautifully livable design. The firm is dedicated to making every home feel functional, unique, and comfortable, maximizing both space and style for every type of home and lifestyle.
Founded by Greg H. Witzman in 2007, GDI offers a seamless blend of architecture and interior design, managing everything from permits and planning to construction oversight and final design details.
With degrees from NYU’s Institute of Fine Arts and a Master of Architecture from Pratt Institute, Greg’s work is shaped by his studies in New York and Florence, as well as years at top-tier firms like Peter Marino and Zeff Design. His projects have been featured in Interior Design Magazine, including Theory’s world headquarters and the 155-ft private yacht, Fathom.
From multimillion-dollar Manhattan lofts and brownstone renovations to cozy kitchens in Katonah, playful kids’ rooms and fresh new bathroom designs in Bedford, Greg’s work spans a wide range of styles and lifestyles. No matter the size or scope, every project is approached with the same thoughtful care, creativity, and design integrity.
At GDI design is not just about aesthetics—it’s about crafting spaces that are deeply personal and reflective of the way you live. Greg and his team pride themselves on managing every detail so you can focus on your vision, while they bring it to life.