Ethos

Margaret Costello Interiors & Design Studio is a multidisciplinary design firm. Within our design ethos, we believe in:

Bringing experiences to life through design

Uncovering your personal style versus following trends

Functional, livable spaces that inspire

Wellbeing at the core of design

Texture as an essential medium

Margaret Costello Interiors & Design Studio is a premier, full-service interior design firm serving luxury residences in New York and Florida, including Manhattan, the Hamptons, Palm Beach, Naples, and surrounding areas. With a focus on timeless, artisan design, we transform your vision into custom spaces that inspire and elevate your everyday life.