For RDAI, the particular and the universal combine to create an essence of architecture. 

Long-renowned for elegant interiors their experience and creativity allows them to embrace every aspect of design from the city to the chair, the place to the object. From the intimate scale of the body and the carefully crafted interior to the urban scale of the street, their architecture is always unique, a response to the context and a conjuring of atmosphere, flow and light. 

RDAI’s legacy stretches back to the firm’s founding in 1972 by the much-admired interior designer, Rena Dumas. Rooted in the elegant architecture of Paris, RDAI’s heritage of interiors, sited in the world’s most luxurious shopping streets, became design laboratories for the incubation of ideas. Now directed by Denis Montel the practice has brought its experience to bear on a global architecture addressing every conceivable scale. 

Edwin Heathcote
Architecture and design critic

Artistic director and general manager
Denis Montel  

A graduate of the École d’Architecture Paris-La Défense, his first professional experiences were transdisciplinary. For ten years he collaborated with agencies specializing in architecture, interior architecture, landscape, scenography and strategic design.

In 1999 he joined Rena Dumas, directing major projects for RDAI.

In 2007 he co-founded RDAI-Architecture with Rena Dumas and Nicolas Karmochkine. After Rena’s death in 2009 he became managing director and artistic director of the two agencies, RDAI and RDAI-Architecture.

Denis has taught at the École Nationale Supérieure des Arts Décoratifs and various architecture schools, and regularly takes part in international conferences.

Julia Capp  
Managing director
Dominique Hébrard  
Interior architect, associate artistic director
Alfonso Ponce-Alvarez  
Development Director
Ségolène Casetta  
Human Resources Manager
Florence Esclangon  
Administrative and financial director
Véronique Duchesne  
Interior architect, production director
Antoine Vernholes  
Strategic Advisor
Architects and interior architects senior
Sybil Debu  
Daniel Poehner  
Architect RIBA
Marie-Eve Dubray  
Interior architect
Cécile Buhagiar  
Interior architect
Nathalie Gonon  
Interior architect
Technical department
Daniel Le Pan  
Interior architect, technical department director
Materials library
Carole Petitjean  
Director of materials library and design department
Research and Development
Florian Tenent  
Interior architect, Director of Research and Development
Architects, interior architects, designers
Florence Adler
Emilie Alexandre
Mathieu Alfandary
Joanna Andreassian
Charlotte Arnoux
Niels Barateig
Catherine Barreira
Floriane Bernabeu
Stéphanie Bozza
Filippo Canni
Lola Chauvel
Rosine Clauss
Karen Crequer
Lucie Curmi
Jérome Delafosse
Elise Delestre
Adrien De Melo
Héloïse Duclair
Léopoldine Faivre
Fabrizio Glorioso
Filippos Grigoriadis
Rudy Guallar
Ludovic Haehnsen
Mona Hariri
Xavier Hinsinger
Pierre Jousten
Anne Kerignard
Simon Laferrière
Benoît Lemarié
Clémence Marchal
Raffaële Manesse-Luquin
Brendan McAdam
Lucille Pernot
Jean-Baptiste Pilli
Jean-François Py
Natalia Salas
Jerry Schael
Barbara Stec
Florian Tenent
Yves Théaudière
Johan Thuillot
Stéphanie Toulemonde
Elisa Trucco
Ekin Tunc
Sébastien Vadde
Barthélémi Zha
Yang Zhao
Kim Hoy
Delphine Leprêtre
Myriam Nicou
Finance and HR
Catherine Carlier
Daniela Rusu
Press & Competitions
François Trédez
Public relations
Julie Bellanger
Technical department
Romain Buyer
Hervé Duclair
Mathieu Lainez
Ewen Le Bis
Mathilde Lebrun
Frank Maury
Facility management
Alexandre Santamarina
Materials library
Florence Boulay-Neveu
Lucie Montauzé
Awards and exhibitions
Prix Versailles
Hermès Hong Kong Prince — Special Prize Exterior — Continental winners “Central Asia and the Northeast” “South Asia and the Pacific”
ADC Awards by Muuuz
Les Bains, Paris — Laureate in the category “Interior / Restaurants” 
Paris Shop & Design
Les Bains, Paris — Laureate in the category “Restaurant” 
Prix Versailles
Ganjam, Bangalore — Interiors, honorable mention in the category “Stores”
Prix Villegiature Awards
Les Bains, Paris — Named in the categories “Best hotel creativity and ingenuity in Europe”
Restaurant & Bar Design Award
Les Bains, Paris — Laureate in the category “Europe Restaurant”
European Hotel Design Awards
Les Bains, Paris — Laureate in the category “Interior design — Restaurants”
Prix de l'Equerre d'argent
La Cité des Métiers Hermès, Pantin — Laureate
Observeur du design
Chaise Sellier — Label Observeur du design
Paris Shop & Design
Hermès Rive Gauche, Paris — Laureate in the category “Equipement de la personne”
Wan Retail Awards
Hermès Rive Gauche, Paris — Laureate in the category “Greater than 200 sqm”
Observeur du design
Fauteuil cireur John Lobb — Label Observeur du design
Observeur du design
Pippa (folding stool) — Label Observeur du design
Art Basel 2018 — Galerie Philippe Gravier
“Le pavillon salle à manger”
AD Intérieurs, La Monnaie, Paris
“Le pavillon salle à manger”
D'DAYS, Musée des Arts décoratifs, Paris
“Stairway to Infinity”
Wallpaper - Holy Handmade ! Salone del Mobile, Milan
“Treasure box”
Aedes Architecture Forum, Berlin
“Zoom: from Object to Architecture”
La Galerie d'Architecture, Paris
“Zoom: RDAI Architecture”
Mouvements Modernes, Paris
“Renas Dumas, Tapis Lumière”
Rena Dumas, 1937–2009

“At the start of each project there is a story to be told, a dream to pursue, one full of sensitivity and poetry. The successful project is the one that maintains the purity of this original vision, answering the dream from which it was born. All our projects are marked by the concern with how humans will live and evolve in these spaces. They are characterized by this passion and this attention to detail. Architecture is an event in itself. Architecture is to be lived and inhabited. It is a generous act. I understood very early the responsibility, I would say the greatness of the profession of architecture, which can give happiness or overwhelm. When I speak of happiness, it is the happiness that generates energy. This is a very important element in the art of creating and building.” Rena Dumas - 2007

Rena Dumas embodied the values of her chosen profession. She discovered architecture as a teenager, when her brother was studying in Athens, and she decided to follow the same path, concentrating on interior architecture.

Rena graduated from the École Nationale Supérieure des Arts Appliqués et des Métiers d’Art in Paris, before continuing her education in Greece and the United States. New horizons opened to her on meeting the architect André Wogenscky in 1968. She took over the management of Robert Anxionnat’s Paris practice, carrying out numerous projects, including the Time Life’s Paris offices and boardroom.

In 1972 she opened her own studio, Rena Dumas Architecture Intérieure. Among her first clients were the Marine Midland Bank and Urquijo Bank while the collaboration with Hermès, which continues today, began in 1976.

From 1983 until her death in 2009, Rena designed furniture and objects, exploring concepts of nomadism. Furniture that folded/unfolded enabled her to delve into the ideas behind structural articulations. With a vocabulary built on simplicity and the absence of embellishment, these pieces express the subtlety of touch. 


Establishment of Rena Dumas Architecture Intérieure by Rena Dumas

Beginning of the collaboration with Hermès

Move to new offices from 5 to 13 rue du Mail 75002 Paris

The change of premises allows the agency and all its departments to expand, including the material library

Inauguration of the Maison Hermès Ginza in Tokyo with Renzo Piano Building Workshop

Inauguration of the Maison Hermès Dosan Park in Seoul

Establishment of RDAI-Architecture

Partners: Rena Dumas, Denis Montel and Nicolas Karmochkine

Death of Rena Dumas

Denis Montel becomes Artistic Director of RDAI

Inauguration of Hermès Rive Gauche in Paris

Prix de l’Equerre d’argent

Cité des métiers Hermès — RDAI-Architecture, winner of the “Equerre d'argent” 2014           

Diversification of activities: hotels, condominiums in the USA, tower in Taipei, and more