Published 2025-07-31
Keywords
- Informal city,
- Spontaneous city,
- Illegal city,
- Sustainable regeneration,
- Spatial Planning tools
How to Cite
Copyright (c) 2025 Claudia de Biase, Salvatore Losco

This work is licensed under a Creative Commons Attribution 4.0 International License.
Abstract
The informal city is configured and articulated as a spontaneous, sprawling or illegal city. Each of them present recurring and distinctive characteristics also in relation to specific territorial contexts. After outlining the scientific background of informal and illegal cities, and summarising the Italian specificities of the last ones, the paper focuses on the dualism between the informal and the illegal city found in the analysis of the technical literature on the subject regarding spatial planning. The aim is to bring out affinities and differences between the two city models to contribute to the formulation of the correct contents of urban planning tools for their redevelopment and/or regeneration to transform especially Italian illegal cities into liveable neighbourhoods.
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