Luxury Interior Designer on Long Island, NY
Estate-scale interior design for the Georgian, Tudor, and Colonial Revival homes of Old Westbury and the North Shore.
Robyn Baumgarten has designed Long Island homes for more than 25 years, and she has completed several projects in Old Westbury. Her rooms have been featured in House, Distinction, Fashion Manuscript, Newsday, and the Long Island Press. She runs her studio in nearby Plainview, just minutes from the village.
Old Westbury is Gold Coast country. Long stone walls, iron gates, and tree-lined drives lead to estates set on many acres. Robyn designs rooms that match that scale, with rich millwork, fine wood, and natural stone that feel grand but never cold.
Not every home here is a Gilded Age estate. Many were built in the 1960s through the 1980s and are now due for a full renovation. Robyn works on both, and she often joins those renovations before construction starts.
Old Westbury began as Quaker farmland in the late 1600s. By the early 1900s, families like the Phipps and the Whitneys built the great estates that still define it. Robyn respects that history in every plan she draws.
Grand homes can feel stiff. Robyn keeps the formal millwork, high ceilings, and classic proportions, then makes the rooms warm and easy for family life.
She guides the whole project herself. Robyn handles the trades, the timeline, and each finish across every wing, library, and guest house. You get one cohesive home, start to finish.
These rooms are all in Old Westbury homes. Robyn has also designed a new home in the village from the plans stage. See the new construction project.
From a single room to a full estate, here is how Robyn helps homeowners in the village. Click any service to learn more.
Robyn leads the full project across a large estate. She plans, sources, and installs every room, wing, and guest house.
Georgian, Tudor, and Colonial Revival homes carry real history. We restore the period millwork and detail, then bring comfort up to today.
We design kitchens and baths at estate scale. Custom cabinetry, natural stone, and fine fixtures that match the rest of the house.
Robyn runs design and construction together. On a multi-wing home, that keeps the work coordinated and the budget clear.
Building a new estate? Robyn joins at the blueprint stage to plan proportion, millwork, and flow from the ground up.
Custom furniture, fabric, drapery, and art from a trade network of more than 150 makers the public cannot buy from.
More North Shore interiors that show the range of our work.
Robyn meets you at your Old Westbury home. She learns how you live, how you entertain, and what each wing needs.
She maps the rooms with floor plans, millwork drawings, and 3D views. You see the full look before any work begins.
She selects fine wood, stone, custom pieces, and art from her network of 150-plus trade vendors.
Her team manages every trade through the final reveal. The whole estate is finished and ready to enjoy.
"Robyn designed our whole estate, room by room. The millwork is stunning, and the house still feels like home."
"She restored our Georgian and kept its details, then made it work for our kids. That balance is rare."
"From the library to the guest wing, every space ties together. Robyn managed all of it without a hitch."
We design estates near Old Westbury Gardens, along the village's stone-walled lanes, and across the Gold Coast. Neighboring towns include Old Brookville and Muttontown, and we also work throughout the towns below.
Yes. We design across multi-acre, multi-wing estates. Robyn plans the millwork and proportion so large rooms feel warm and connected.
Yes. We work on Georgian, Tudor, and Colonial Revival estates. We protect the period details, then update comfort, systems, and function.
Yes, if you can. When Robyn joins before construction, she can adjust room sizes, window placement, and lighting with the architect. That costs far less than changing a room after it is built.
Yes. We design guest houses, libraries, conservatories, and entertaining wings, so the entire property shares one cohesive look.
Every estate is different, so the price follows the work. On the first visit, Robyn reviews scope and budget in plain terms. You will see the numbers before any work starts.
Call or text us, or send a note through the contact form. Robyn will set a time to visit your home and sketch a first plan.
Robyn works from a Plainview studio, just minutes from Old Westbury. Call or text, and she will set a time to walk your estate.
Interiors by Just Design
Plainview, NY
Call: 516-470-0861
Text: 631-680-9691
We serve Old Westbury and the North Shore, including Brookville, Muttontown, Roslyn, Jericho, Syosset, and Westbury.
Call or text for a private consultation. We design estates across the North Shore.
25+ Years Experience · 150+ Manufacturer Partners · Full-Service Design Firm
