Luxury Interior Designer on Long Island, NY
Interior design for shingle-style homes, beach houses, and new builds across the South Fork, from Westhampton to Amagansett.
Robyn Baumgarten has designed Long Island homes for more than 25 years, including many on the South Fork. Her rooms have been featured in House, Distinction, Fashion Manuscript, Newsday, and the Long Island Press. She runs her studio in Plainview and travels east to meet clients at home.
The Hamptons cover a string of villages and hamlets along the South Fork, in the Towns of Southampton and East Hampton. Housing ranges from 18th-century farmhouses and whaling-era village homes to shingle-style estates and modern beach houses on former potato fields.
What ties them together is the setting. Strong sun, salt air, sand, and summer guests all test a room. Robyn designs for that from the start. For a closer look at the style itself, see our guide to Hamptons interior design.
A beach house should feel easy. It also has to survive wet towels, sandy feet, and a full house every weekend. Robyn balances both with performance fabrics, natural stone, solid hardware, and finishes that age well near the ocean.
Light leads the design. South Fork homes get bright, reflected light off the water and the fields. Robyn uses soft, natural palettes and window treatments that control glare without blocking the view.
Many clients are not on site year-round. Robyn manages the trades, deliveries, and installation while you are away, and sends updates as the work moves forward.
These villages do not have their own page on our site, so each one gets a short guide here. For towns with a dedicated page, see the town guides below.
Sag Harbor was one of the busiest whaling ports in the country in the early 1800s. Its historic district still holds Federal and Greek Revival houses along Main Street and the side streets near Long Wharf.
Older village homes often have low ceilings, small rooms, and original wide-plank floors. Robyn keeps that character and plans furniture and lighting that make modest rooms feel open. Harbor-side homes get view-first layouts.
Southampton Village dates to 1640 and is one of the oldest English settlements in New York. Large shingle-style estates line the lanes near the ocean, and the village center runs along Main Street and Jobs Lane.
Estate homes here need scale without stiffness. Robyn uses millwork, layered lighting, and careful furniture groupings to make big rooms comfortable for both quiet weeks and crowded summer weekends.
Water Mill takes its name from the 1644 mill that still stands at its center, near a windmill on the village green. The hamlet sits along Mecox Bay and is home to the Parrish Art Museum.
Many Water Mill properties combine open farmland views with large new construction. Robyn often joins these projects at the plan stage, so window placement and room sizes support the furniture and the view.
Wainscott is a small hamlet between Sagaponack and East Hampton, bordered by Georgica Pond and the ocean. Much of it is quiet residential land with estates near the dunes.
Homes here face strong ocean light and wind. Robyn plans UV-resistant fabrics, durable flooring, and window treatments that protect furnishings while keeping rooms bright.
Hampton Bays is a year-round community on Shinnecock Bay, near the Shinnecock Canal and the Ponquogue Bridge. Many homes sit on canals or along the bay, alongside capes and ranches inland.
Waterfront homes here need moisture-tolerant materials and flood-aware planning. Robyn also updates smaller year-round homes with brighter layouts and easy-care finishes.
Each of these towns has a dedicated page with local projects, services, and answers to common questions.
Saltboxes, shingle-style estates, and beach houses.
Beach houses and village homes.
Farmhouses and new builds on former farmland.
Oceanfront estates and farmland homes.
Dune Road beach houses and village homes.
Historic village homes and Dune Road oceanfront.
From a single room to a full renovation, here is how Robyn helps homeowners in the Hamptons. Click any service to learn more.
Robyn leads the full project. She plans, sources, and installs every room of your home.
The whole house planned, ordered, delivered, and styled, so it is ready when you arrive.
Kitchens and baths with honed stone, solid hardware, and tile that hold up to salt air.
Design and construction run together, which keeps a large project coordinated while you are away.
Robyn joins at the blueprint stage to plan great rooms, sight lines, and doors that open to the deck.
Performance fabrics, natural textures, and art from a network of 150-plus trade vendors.
Custom upholstery, casegoods, and window treatments often take three to four months to arrive. That is why most summer installs start planning in the fall or winter. Here is how a typical turnkey project lines up.
Robyn walks the house with you, measures every room, and sets the scope and budget.
She presents floor plans, finishes, and furniture, then places orders once you approve.
Trades finish paint, lighting, and built-ins while pieces arrive at a receiving warehouse.
Her team delivers, installs, and styles every room, down to the linens and accessories.
Robyn meets you at your Hamptons home. She learns how you live, how you host, and when you need the house ready.
She maps the rooms with floor plans, sample boards, and 3D views. You see the whole house before a single order goes out.
She sources fabric, furniture, and art from her trade network, with coastal-grade materials that age well.
Her team installs and styles every room, so the house is finished before your first weekend of the season.
"Robyn understood our beach house right away. She picked fabrics that handle sand and sun, and the rooms still feel elegant."
"She restored our old saltbox with real care. The history is still there, but the house finally works for our family."
"Robyn had the whole home furnished before summer. We walked in and it was ready. Every detail was right."
We design homes across the South Fork, from Quogue and Westhampton east to Amagansett and Montauk.
Yes. Start planning in the fall or winter, because custom pieces often take three to four months to arrive. Robyn then installs and styles the house before the season begins.
We use performance fabrics, UV-resistant window treatments, marine-grade hardware, and natural stone. They hold up near the ocean and still feel soft and relaxed.
Yes. Robyn often joins new construction and renovations at the plan stage and coordinates with the builder and architect through installation.
Yes. We plan durable, easy-to-clean finishes, secure storage for personal items, and furniture that is simple to reset between guests.
Every home is different, so the price follows the scope. 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 and travels east to meet clients at home. Call or text, and she will find a time that fits your season.
Interiors by Just Design
Plainview, NY
Call: 516-470-0861
Text: 631-680-9691
We serve the Hamptons, including Sag Harbor, Southampton, Water Mill, Wainscott, Hampton Bays, and the towns with their own guides above.
Call or text for a consultation. We design homes across the South Fork.
25+ Years Experience · 150+ Manufacturer Partners · Full-Service Design Firm
