Page 5 to 8: Frédéric Distler – Editorial | Page 9 to 18: Roukia Boukezzoula – How can the rehabilitation of tertiary real estate into residential real estate constitute a lever to compensate for the lack of housing in Île-de-France? | Page 19 to 26: Bathilde Chapelot – Asset data management, a performance issue for social landlords – The case of Val Touraine Habitat | Page 27 to 41: Ophélia Merel – Responding to stakeholder issues by building innovative housing | Page 43 to 59: Lina Ghanbaja – The digital transition as a survival issue for real estate businesses | Page 61 to 87: Pascale Schutzing – How to support the energy rehabilitation of property owners and lessors | Page 89 to 105: Frédéric Distler – When the client is an expert: place and role of the real estate agent.