Siège de l'ONF : La forêt

The ONF Headquarters: La Forêt, desi­gned by the firm Loci Anima, is an ico­nic buil­ding loca­ted in Maisons-Alfort, Val-de-Marne. Inaugurated in December 2022, it embo­dies the values of the National Forestry Office (ONF) regar­ding sus­tai­na­bi­lity, modu­la­rity, and connec­tion with nature.

A bio­mor­phic woo­den archi­tec­ture
This enti­rely woo­den buil­ding was desi­gned as a living orga­nism. Its bio­mor­phic struc­ture allows it to adapt over time and use, thanks to modu­lar woo­den cells that can be added, remo­ved, or repai­red as nee­ded. This approach offers great flexi­bi­lity and a low eco­lo­gi­cal foot­print, while wea­ving a connec­tion bet­ween the city and nature.

Project details
Program: Offices, Headquarters of the National Forestry Office
Floor area: 7,018 m²
nstruc­tion cost (excl. tax): €19.8 mil­lion
Certifications: BEPOS Effinergie 2017, Label E3/​C2
Competition date: Competitive dia­logue 2019 (not awar­ded)
Client: National Forestry Office
Location: Maisons-Alfort, France

Project team
Architect: Loci Anima
Lead contrac­tor: Arbonis
Structural and façade engi­neers: Bollinger+Grohmann
Engineering: Quadriplus
Cost esti­ma­tor: Prisme
Acoustics: Gamba Acoustique

An immer­sive wood expe­rience
Wood is omni­present throu­ghout the buil­ding, crea­ting a warm and heal­thy atmos­phere. Elements such as the robi­nia wood recep­tion desk, oak paving stones on the floor, and the various wood spe­cies used in the struc­ture illus­trate ONF’s com­mit­ment to pro­mo­ting local and sus­tai­nable wood.

This pro­ject reflects ONF’s dedi­ca­tion to pro­mo­ting envi­ron­men­tally res­pect­ful archi­tec­tu­ral prac­tices in har­mony with nature.