# Citizen participation and real estate development. Developing virtuous practices in the context of ecological transitions.
**Date de l'événement :** 07/03/2023
* Publié le 07/03/2023

### Image(s)
![Première page du dossier " Citizen participation and real estate development." la photographie représente un immeuble.](https://firebasestorage.googleapis.com/v0/b/memory-sp-pr.appspot.com/o/prod%2F1y7CgDOTakHDiB3dgoi0%2FprojectsMedias%2FpV4A49M2Js4dNvNlP7i1%2Fthumbs%2FCapture%20d'%C3%A9cran%202025-10-27%20121048_ikcw6_1600x900.png?alt=media&token=e62a9b2e-dc46-4014-8795-b157b16b9298) 

## Auteur(s)
Anaïs Magliocco, Léa Marissal, Marie Forgerit, Matteo Fabris

## Tuteur(s)
Hugo Christy

## Partenaire(s)
Chaire Villes, Logement, Immobilier de Sciences Po

## Description
**Ce projet est issu des travaux des élèves du Master Urban Governance, Policy and Planning, spécialité Governing Ecological Transitions in Cities (GETIC) de 2022-2023 :**  
  
PRÉFACE  
  
Traditionally, developers and city governments have had two choices for initiating new construction projects: either extend the city on empty land, or redevelop existing plots, generally by bringing it more density and functional changes. In France and all around Europe, the first option has historically been the main mean of enlarging the housing supply, generating sprawl, and single-family-house, mono-functional neighborhoods.  
  
As the legal environment adapts to the needs of the ecological transition, this window of opportunity for such developments is progressively closing. New local reglementations tend to limit sprawl, resulting in a de facto prohibition. Even when allowed, the new Zéro Artificialisation Nette (ZAN) framework, adopted at the national level as a derivation of the European « no net land take » objective, is likely to drive up the costs of urbanization at unsustainable levels for both the private and public sectors.  
  
On the other hand, the « urban intensification » model, indirectly promoted by stronger regulations, is facing its own problems. More costly by nature (densifying may imply demolition costs, heavier studies, occasional depollution works…), densification projects are often confronted with strong local oppositions, and an absence of political support. While it may result in a net-positive outcome (in terms of housing stock, affordability and greenhouse gas emissions for instance), thus approaching a definition of « general interest », density is no longer consensual. New heterogenous coalitions form around climate activists and small-scale NIMBY lobbies, generating new risks for traditional businesses involved in the urban « growth machine ».  
  
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**Accéder à la synthèse du projet :** [https://www.sciencespo.fr/ecole-urbaine/sites/sciencespo.fr.ecole-urbaine/files//Chaire%20villes,%20logement,%20immobilier%202023%20Synth%C3%A8se%20(1).pdf](https://www.sciencespo.fr/ecole-urbaine/sites/sciencespo.fr.ecole-urbaine/files//Chaire%20villes,%20logement,%20immobilier%202023%20Synth%C3%A8se%20(1).pdf)

### Type(s) de ressource
`#Texte` 

### Discipline
`#Urbanisme` 

### Thématique(s)
`#Logement / Immobilier` `#Environnement / écologie / climat / écosystèmes / biodiversité` 

### Langue(s)
`#Anglais` 

### Famille(s) de contenu
`#Production étudiante` 

### Type(s) d'accès
`#Accès libre` 

### Hébergeur(s)
`#Ecoweb` 

## Droits
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