Who We Are

Lagnappe Custom Interiors is the foremost full-service interior design firm in the U.S. Virgin Islands, having served vacation rental owners, homeowners and commercial developers for the past 20 years.

Co-founders David and Tiffany Cassidy lead the largest, most experienced interior design team in the Virgin Islands, one of whom is always available during regular business hours to answer your questions and/or concerns. 

Lagnappe Custom Interiors offers a variety of services to suit your needs, including Design Strategy Sessions, Designer for a Day, Master Plan for Design, Full-Service Luxury Interior Design and Floor Plan Review. We invite you to learn more about all 5 of these services to determine which one is right for you. 


Creating a Sustainable, Carefree, Safe Environment

At Lagnappe Custom Interiors, we value designing home environments that utilize easy care, comfortable, sustainable materials that are appropriate for our coastal climate.

Whether we are designing a personal retreat or a vacation rental for you, we select the highest-quality, most durable materials, finishes, fixtures and furniture available so that they endure in our waterfront settings where windows and doors are often open to fresh air and sea breezes.

We pay attention to safety features like non-slip tiles, child safety railings and more to ensure a stress-free, carefree, easy-living experience for you and your rental guests

“The style of our home designs is distinguished by organic shapes and textures and color palettes from the natural world around us. We use bases of sand and driftwood, adding in a bit of sky and water, accented with pops of bougainvillea and hibiscus.” ​
Tiffany Cassidy
Tiffany Cassidy
Principal Designer

David and Tiffany Cassidy

Co-Founders of Lagnappe Custom Interiors

David and Tiffany Cassidy founded Lagnappe Custom Interiors in 2002, and together have built it into the foremost full-service interior design firm in the U.S. Virgin Islands serving luxury vacation rental owners, commercial developers and homeowners.

Both are California natives, and met in St. Thomas when David was there for a season as a boat captain and diving instructor.

While Tiffany serves as principal designer, David skillfully expedites and coordinates ocean freight and transit, custom clearances and deliveries of furnishings, fixtures and accessories.

As a team, David and Tiffany understand what it’s like to balance business and family life, and love to come home to their private haven at the end of each day.

In turn, they enjoy creating luxury vacation rentals and homes that allow their many clients to experience that same laid back Caribbean island style they enjoy – where friends and family can gather to relax or entertain comfortably and easily whenever the mood strikes. 

“To us, "island style" means ease… ease of use and flow, a comfortable and pretty place where friends and family gather,” says Tiffany.


Meet Our Staff

Tiffany Cassidy

Principal Designer

A native of California with a degree in chemistry and a passion for creativity, Tiffany has been designing luxury homes and commercial spaces in the U.S. Virgin Islands since 2002. She leans on her scientific background to ensure her designs are not only stunning and evocative of island life, but also provide optimal functionality and safety – features especially important for a vacation rental home. An award-winning interior designer, Tiffany considers it a privilege to be invited into other people’s houses to help them transform their living spaces. Her goal is to bring the ease and beauty of island life into your interior and exterior environment, and to make your life better. “The essence of interior design will always be about people and how they live…All the furnishings we select, color schemes we create and floor plans we put together have an ultimate goal of creating a backdrop that makes your life healthier and happier,” she says.

Angelica McCoy


Before moving to St. Thomas in 2012 to pursue her passion for interior design, Angelica worked in civil engineering and surveying in the Dallas-Ft. Worth area. With a degree in Drafting, Interior Design and Architecture, she is currently continuing her education at the Academy of Arts University. With a precise eye for detail, floor planning and elevations, and with exceptional expertise in kitchen and bath design, Angelica has been a designer at Lagnappe since 2016. Our clients say they enjoy working with her because she is organized, provides accurate timelines, and gives valuable suggestions about functionality and aesthetics. In her free time, she enjoys a cross fit workout and boating with her friends.  

Chantal Brooks


Chantal has over 15 years of experience in residential interior design, including many years working in luxury kitchen and bath showrooms in Charlotte, NC and Washington DC designing custom spaces for clients. During her time designing high-end kitchens and bathrooms, she gained extensive knowledge of tile and plumbing products, a passion for design and an eye for detail. A native of the South, Chantal was born in New Orleans and holds a Bachelor of Arts degree in Art History from the University of North Carolina at Chapel Hill. She began her career in London as a design manager for an international publication for the fine arts and antiques industries before turning her considerable creative design talents to interiors.

Mary Bancroft

Office Manager

Mary’s experience competing in the 2012 London Olympics in synchronized swimming comes in handy each day as she runs the Lagnappe office with harmony and precision, keeping track of all furnishings, fixtures and accessories shipments ordered for our clients. In addition to her coordination and swimming talents, Mary has a BA in Business Management with a minor in Law. She loves working with people, helping solve problems, providing answers and keeping us organized and effective. Her international swimming competitions have allowed her to travel all over the world and see beautiful design from a global perspective. She has lived in St. Thomas since 2016 and has been with Lagnappe since 2017.

Yvonne Ouellette

Purchasing Coordinator

As a former entrepreneur who founded and operated an e-commerce business for 17 years, Yvonne has experience in vital disciplines such as procurement, purchasing and logistics to ensure successful design projects and satisfied clients. After selling her business, she achieved her goal to take her skill sets to the interior design industry, creating organized and strategic processes specific to design. Yvonne considers it an honor to work with such a talented and professional design team, and is proud to collaborate behind the scenes with the designers, the CEO and vendors, helping to free up their time to devote to luxury interiors projects.

David Cassidy

Co-Founder of Lagnappe Custom Interiors

Born and raised in Redondo Beach, California, David worked as an electronics expert for BMW for 17 years in Colorado and California before taking a sabbatical from his job and coming to St. Thomas for a stint as a diving instructor and boat captain. Falling in love with both Tiffany and the Caribbean while here in STI, he never went back.
Here at Lagnappe, he ensures that customers get products on time and that everything is perfectly installed by overseeing ocean freight expediting, custom clearances and deliveries of furnishings, fixtures, mattresses, appliances and accessories.
While Tiffany designs and plans the projects, David makes sure everything is installed in the home and takes care of everything from computer updates to setting up clients’ bed frames with efficiency, dedication and a determination to delight each client.