Record checked on 26 October 2026.
Mutabilis Paysage & Urbanisme
Architecture firm in Paris 11th · founded in 2003
Formerly Atelier Acanthe Paysagistes
Overview
Mutabilis Paysage & Urbanisme is a Paris landscape and urban-design practice founded in 2003 by the landscape architects Juliette Bailly-Maître and Ronan Gallais, both trained at the Versailles school of landscape, who still run it. Its team of landscape architects, architects, urban planners and engineers works on parks, squares and town-centre regeneration across France, from the Parc du Chemin de l'Île in Nanterre to the Mail François-Mitterrand in Rennes.
- Founded
- 2003
- Team
- ≈ 12
- Projects
- 7
- Awards
- 3
Founded in November 2003 as Atelier Acanthe Paysagistes and renamed Mutabilis in 2005.
Partners and founders
Juliette Bailly-MaîtreCo-founder / Co-manager / Landscape architect and urban planner
Ronan GallaisCo-founder / Co-manager / Landscape architect and urban planner
Fields of work
Parks and gardens · Squares and streets · Town-centre regeneration · Urban planning and eco-districts · Landscapes for buildings and campuses
Built work
Mail François-Mitterrand
Rennes · Urban boulevard and promenadeSquare Luc-Hoffmann (rue de Flandre, rue de Tanger, rue du Maroc)
Paris · Public gardenPlace de la Paix
Mulhouse · Public squareGarden of the Carpe Diem tower
Courbevoie (La Défense) · Office-tower gardenLe Clos des Fées, hamlet extension (landscape, with COBE)
Paluel · Housing and public spacesParc du Chemin de l'Île (with Guillaume Geoffroy-Dechaume)
Nanterre · Urban parkPrizes and awards
- 2013Prix de l'aménagement urbain, rural areas category (Le Clos des Fées, Paluel, with COBE)
- 2013Prix AMO 'Habitat, architecture, environnement', special mention (Le Clos des Fées)
- 2011National ÉcoQuartier awards, first prize in its category (Balma-Gramont eco-district)
Frequently asked questions
Where is Mutabilis Paysage & Urbanisme based?
The firm's address is 4 passage Courtois, 75011 Paris.
When was Mutabilis Paysage & Urbanisme founded?
It was founded in 2003.
How can I contact Mutabilis Paysage & Urbanisme?
You can reach the firm by phone on +33 1 43 48 61 33, by email at mutabilis.administration@wanadoo.fr and through its website mutabilis-paysage.com.
What are the main projects of Mutabilis Paysage & Urbanisme?
Its built work includes Jardin de Vidailhan, Balma-Gramont eco-district (Balma, 2020), Mail François-Mitterrand (Rennes, 2015) and Square Luc-Hoffmann (rue de Flandre, rue de Tanger, rue du Maroc) (Paris, 2013).