Katharine Mast

Katharine has more than 20 years of experience in high-end residential design, both on her own and working for others. Her extensive background in art history and fine art brings an added level of artistry and sophistication to her work. Katharine’s innate talent for designing highly bespoke spaces that truly reflect the lifestyles, tastes, and dreams of each client has connected her to clients in the greater Boston area and up and down the East Coast.

Katharine received her Interior Design Certificate from the New England School of Art and Design at Suffolk University and has a BFA in Fine Arts and French from Connecticut College. She studied at Parson’s School of Design in France and Syracuse University’s Art and Architecture program in Florence, Italy. Katharine joined Charles Street Design (CSD) in 2022 and became an Associate Principal at LDa when CSD joined LDa in 2024.