Sharing energy renovation work: study of the Concerted Renovation Zone (ZRC) concept

Joint renovation: pooling resources for greater savings?


Part of the work of the Ville de Paris Mission for a Smart and Sustainable City (MIVIDA) is to reflect upon the profession of district eco-manager, particularly with a view to the legal structure of co-ownership associations. Since 2014, the Paris climate agency Agence Parisienne du Climat (APC) and Efficacity have worked with MIVIDA to help develop the concept of the Zone de Rénovation Concertée (ZRC), or concerted renovation zone.


MIVIDA adopted a proposal for a study to refine details of the ZRC concept, involving an analysis of three adjoining co-ownerships around Place d’Aligre in Paris, each of which in turn had voted to carry out energy renovation work in 2016.


The approach employed consisted of:

  • Identifying the gains to be made through joint renovation, and drawing up a business case to convince public sector decision-makers to encourage this type of initiative;
  • Developing a tool for identifying potential ZRC candidates through analysis of GIS mapping of the built environment and the co-ownerships, based on APC data and other sources available. The indicators used provided an evaluation of the capacity for action of Paris co-ownerships.


The early gains made from the pooling of resources are encouraging. Analyses show potential for the reduction of certain costs of work (bulk buying, sharing infrastructure, reduced proportion of thermal study costs, shared storage spaces, etc.) but also enhanced asset value thanks not only to the building’s increased energy efficiency but also to the overall improvement of the district itself.

The tool is being tested as part of the Ville de Paris’ new Climate Plan, which includes a significant renovation component and plans to conduct pilot schemes in three Paris arrondissements.

Client MIVIDA (Mission Ville Intelligente et Durable) de la Ville de Paris

Dates 2016-2017

Members Agence Parisienne du Climat (APC), ICADE, Étude Cheuvreux

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Les analyses mettent en avant un potentiel de réduction des coûts des travaux et majoration de valeur patrimoniale grâce à l’augmentation de l’efficacité énergétique du bâtiment et l’amélioration globale du quartier