Record checked on 26 October 2026.
Huit et demi
Architecture firm in Marseille 1st
Overview
Huit et demi is a Marseille collective of nine partner architects, formed by the merger of four practices: M+N architectures, bauA, atelier Mossé Gimmig and Alexandre Chapuis. It works mainly on public buildings across Provence, from schools, libraries and cultural centres to heritage conversions and housing renovation. Its Clément David cultural centre in Roquevaire and its media library in Tarascon were both selected for AMC's annual “100 bâtiments de l'année”.
- Founded
- —
- Team
- ≈ 17
- Projects
- 7
- Awards
- 2
Partners and founders
Frédéric BreyssePartner / Architect
Alexandre ChapuisPartner / Architect and engineer
Mathieu FabrePartner / Architect
Frédéric GimmigPartner / Architect
Stéphane LabatutPartner / Architect
Gilles MartinPartner / Architect
David MosséPartner / Architect
Régis NochumsonPartner / Architect and heritage architect
Balthasar SieversPartner / Architect
Fields of work
Schools · Libraries and cultural buildings · Sports facilities · Heritage rehabilitation · Housing renovation
Built work
Departmental conservatory (former Théâtre Saint-Jacques)
La Ciotat · Music conservatory (conversion)Lycée Monte Cristo (with JM Chancel and JS Cardone)
Allauch · High schoolClément David cultural centre
Roquevaire · Cultural centreMedia library and toy library
Pernes-les-Fontaines · Media libraryCemetery extension
Saint-Marc-Jaumegarde · CemeteryArchbishop's palace rehabilitation (Vaucluse département offices, with Fabre et Speller)
Avignon · Offices and documentation centre (rehabilitation)Prizes and awards
- 2023Rubans du patrimoine (La Ciotat conservatory)
- 2017Vaucluse departmental architecture and landscape prize (CAUE 84), second prize (Pernes-les-Fontaines media library)
Frequently asked questions
Where is Huit et demi based?
The firm's address is 21 place Alexandre Labadié, 13001 Marseille.
How can I contact Huit et demi?
You can reach the firm by phone on +33 4 91 68 00 26 and through its website huitetdemi.fr.
What are the main projects of Huit et demi?
Its built work includes “Le Lien” media library and nursery (Tarascon, 2023), Departmental conservatory (former Théâtre Saint-Jacques) (La Ciotat, 2022) and Lycée Monte Cristo (with JM Chancel and JS Cardone) (Allauch, 2021).