Concept: The principle of grouped habitat with 13 apartments (R+7), commercial premises, gardens (ground floor and roof area), car parks andcommunal areas (community house, laundry, bike shed...) which reflects a new construction trend: private individual buyers join together to form acooperative (Diapason group) to fulfil their own property and future housing project, in partnership with the SEMAVIP (Paris Site Manager) and Paris City. The aim is to share spaces and equipments.Architecture: Two blocks divided by a traffic «break». The overlapping of the properties aims to make everyone benefit from double orientationand ease flows. An insertion in the optimised site with the exploitation of views over the canal (to the north) and over the garden (to the south).Ecology: Energy performance surpasses the City climate scheme (BBC/Passivhaus label). Materials used are ecological (cellulose wadding, vertical coating in preoxyded wood). Vegetation is omnipresent (communal garden on the ground floor, communal green terraces, blooming privatebalconies, kitchen gardens...).● Net Floor Area: 1,804 m² ● Budget: 3.14 M€ ● Phase: Won in March 2010 ● Delivery date: Beginning 2012 ● Client : Diapason ● Team : KARAWITZ with CER3I (structure), Tohier (economy), Fluids/Heating Engineering : AMOES ● Location : Rue de l’Ourcq, Paris 19th district