Luxury Interior Design for Timeless, Personal Homes
Marie-Christine Design is a boutique luxury interior design firm with offices in Manhattan and Sag Harbor, serving clients throughout the country. We specialize in full-service residential interior design for new construction, large-scale renovations, and whole-home interiors, bringing together creative vision and meticulous project oversight at every stage. Founder Marie-Christine McNally personally leads each project, ensuring a process that feels organized, efficient, and deeply considered. The result is a home that feels timeless, collected, and unmistakably yours.
Our Approach
Full-Service Residential Interior Design
From the first conversation through final installation, we oversee every aspect of the project: floor plans, material selections, furniture and vintage sourcing, custom furnishings, contractor coordination, and budget management. Our studio is intentionally structured so design and execution move together seamlessly. Whether creating a primary residence, country house, or weekend home, we deliver homes that feel thoughtful, deeply personal, and built to endure.
From Architecture to Interiors
Many of our projects begin long before interiors take shape. We collaborate closely with architects and builders from the earliest phases of new construction and renovation projects, advising on architectural materials, finishes, plumbing fixtures, and lighting so each decision supports a cohesive vision from the inside out.
Our expertise in FF&E informs every stage of the process, ensuring that interiors are considered alongside architecture from day one.
Timeless Design, Wherever You Call Home
Design Philosophy
Our work is shaped by contrast and juxtaposition: refined spaces layered with vintage pieces that bring patina, history, and soul. Perfectly imperfect objects alongside contemporary art; rich textiles balanced by light and air.
Where We Work
Based in Sag Harbor and Manhattan, Marie-Christine Design partners with clients throughout the country on luxury residential interiors. Recent projects span the Hamptons, New York City, Greenwich, Connecticut, and Houston, Texas.
Whether you are building a new home, renovating an existing one, or searching for a luxury interior designer to shape a country house or weekend retreat, we would love to hear about your project.
The Shop
Matine
The same eye that shapes our interiors curates our shop. Ma-Tine is a collection of vintage furniture, art, and objects — sourced the same way we source for our clients, and available to bring home.