who we are

Quartet Design Studio is a female-led group of architects and interior designers with 30+ combined years of experience based in NYC, the Hamptons and beyond.

DORIAN WALTHER

With 10+ years of experience in architectural and interior design, Dorian has worked on a variety of residential, institutional, hospitality and retail projects. She has worked for and consulted with several of the leading brands in those fields, such as Marriott International, Ralph Lauren, Panerai Watches and Ugg Home Collection. Dorian specializes in fixture design, development and construction and has led all phases of a project - from concept to prototyping and the implementation of global roll-outs. Dorian has helped brands successfully launch new products while staying on the forefront of retail design trends. Dorian has a BA in History and Art History from the University of Wisconsin-Madison and a Masters of Architecture I from Pratt Institute.

JUDY CHUNG

Judy has worked for multiple luxury brands including Ralph Lauren, Calvin Klein, and Christian Dior, as well as a few prominent New York City architecture firms. Her experience and leadership of these internal design teams has given her the knowledge to successfully represent a brand’s identity and aesthetic. She has expertise in all stages of design projects ranging from initial design studies to prototyping and construction management. Projects have ranged from complete fixture design packages for international rollouts, to design and construction of boutiques, and planning and construction of commercial and residential buildings. Judy earned her Master of Architecture at Pratt Institute and has an undergraduate degree in art history and journalism from New York University. Previously, Judy worked as a writer and producer in television news before pursuing her dream of a career in architecture.

SARAH OLMAN

Sarah designs and curates interior spaces for a diverse range of international clientele. She is a multi-faceted designer with expertise in residential, commercial, and retail interior spaces. Sarah has most recently worked for the iconic lifestyle brand Ralph Lauren designing stores from major flagships to hospitality interiors on a global scale. She has designed home product for American retailer Tommy Bahama and home furnishings for New York based bespoke furniture companies like Duc Duc and The New Traditionalists. Sarah’s global design reach has given her extensive knowledge of the antiques and vintage network of collectors and curators. Sarah received her academic training in Interior Design and Art History and completed an Intensive Studies tenure in Interior Architecture at Parsons School of Design.

Collection of material samples including marble, wood, fabric, and carpet.

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For clients who appreciate subtle impact: here’s how we balanced refined neutrals with a bold touch of green in this Tribeca living area. Our client—a dedicated lawyer with a taste for understated elegance—wanted a space that felt:
Love music, art, or entertaining? Here’s how we curated a Great Room filled with character and elegance for our Fifth Avenue clients. 🎶 A Steinway grand piano at the heart of the room for intimate recitals and gatherings 🛋️ Tasteful vintage
When we first stepped into Rory’s finished space, we told her, “It feels like the city out there, but in here, it feels like a vacation.” She smiled, “Yes! That’s exactly what I wanted.” Rory, a lawyer, bought thi
An entertainment space with edge—high-gloss teal walls, custom leather panels, and layered textures make this media room one-of-a-kind. For this Fifth Avenue family of creatives and music lovers, we crafted a retreat that’s bold, storied
Cutting corners on design can cost you more in the end. These clients dreamed of a space that could do it all — serve as cozy living quarters for their two elementary-aged kiddos, integrate smart and subtle storage, and seamlessly convert into