We are a studio of designers who are passionate about innovative design and luxury interiors.

Hillary Summerbell



Hillary is the owner and creative design force behind Sanctuary Interior Design and brings a well-honed and well-traveled eye to each one of her projects. Her esteemed design firm offers the highest quality of service and products. Hillary cultivated Sanctuary Interior Design’s reputation for top-tier service and exceptional design consultation through her ability to manage the entire design process, from blueprint to completion. Hillary is committed to ensuring that every detail of each project is implemented to the absolute satisfaction of the client. When she isn’t in the studio, you can find Hillary feeding her adventure bug, exploring with her Yorkshire Terrier puppy, Roxy, or visiting her four grown children all over the country.

Katelyn Rehman

Katelyn was born and raised in Potomac, Maryland where she fell in love with the design world at a young age through her dad working for elite hotel companies. She moved down South to attend The University of South Carolina, where she got her Bachelors Degree in Early Childhood Education. After attending college she always knew deep down she had a passion for interior design through her travels, close eye to detail, and organization. Katelyn now joins us at Sanctuary where she uses a graceful touch creating spaces that celebrate a sophisticated sense of simplicity. When she isn't working, she is traveling, doing something outdoors, or catching up with friends downtown. 

Darby McGee

Darby, another native Marylander, graduated from High Point University with a Bachelor of Science in Visual Merchandising Design. During her time at High Point, she worked at the Loloi showroom and helped set up for High Point Markets working with head designers. Her experience in accessorizing and furnishing showrooms has prepared her for future design visions. She now joins the Sanctuary team as our resident SketchUp artist, providing our clients with three-dimensional renderings, space planning, and ample design visualizations for each room. 

David Lonis

David is a native New Yorker, from a creative family well-rooted in the design world. Growing up in his grandfather's woodshop, he admired the planning and execution of his furniture and casegoods for university libraries, the Baseball Hall of Fame in Cooperstown, N.Y. and the many Smithsonian Institutions right here in Washington, D.C. David built his own career in home furnishings in the areas of product development, global production sourcing, and design leadership for brands such as Waterworks, Martha Stewart Living, West Elm, and Ralph Lauren. He shifted his focus to lifestyle solutions and interior design several years ago, and is thrilled to have now found his own Sanctuary to call home with Hillary and the team.