Geraldine Surkyn

Geraldine Surkyn Interior Design (GSID) is a Mill Valley-based interior design studio serving Marin County, San Francisco, the Peninsula, and Sonoma. Founded by Geraldine Surkyn, originally from Brussels, the studio brings a European sensibility to California living, creating refined, personal homes shaped by light, material, proportion, and everyday routines. Its approach favors thoughtful restraint and honest materials, with an emphasis on spaces that feel considered rather than simply decorated.

GSID offers full-service interior design, guiding projects from initial concepts through installation. Services include space planning, material selection, custom furnishing, renovation design for kitchens, bathrooms, floors, and other defined areas, as well as furnishing and styling with curated furniture and original art. The studio also provides construction oversight and owner representation to help protect the design and coordinate project details during construction. Its process begins by understanding clients’ needs and the home’s architecture, then develops and refines a cohesive vision before guiding its execution. GSID’s portfolio includes new builds, residential retreats, and kitchen and bathroom design projects.