This work examines the formation of urban habitats through reconfigurations in social interaction and urban spaces, driven by the arrival of former combatants and/or demobilized individuals from organized armed groups outside the law to urban contexts with established residents. In this regard, it investigates the network of social relations and identity construction resulting from the process of forming and/or building a neighborhood when interacting with former members of GAOML. Initially, this phenomenon is reviewed based on various cases in Colombia, documented by different organizations, entities, authors, and other actors. This documentation has primarily focused on national-scale processes involving GAOML seeking agreements to approach the end of Colombia's internal armed conflict and achieve lasting peace. Following this general overview, a qualitative study is conducted, grounded in the analysis of documentary information and data obtained through interviews and field notes constituting the fieldwork, which is centered in the Ciudadela Santa Rosa neighborhood, located in the San Cristóbal locality in Bogotá. Studying social interaction and urban space reconfiguration stemming from the arrival of former members of GAOML is particularly relevant in a country with over 70,000 former combatants and demobilized individuals. Especially considering that a significant number settle in urban areas, particularly in capital cities, due to the lack of guarantees to carry out the process of demobilization, disarmament, reintegration, and reincorporation (DDR) in rural areas. Drawing from Norbert Elias's work, the relationship between established residents and the conflict provoked by the arrival of individuals they perceive as different and with whom they share their living space is studied. The concept of Established and Marginalized helps take the first step by conceptually including this relationship and its theoretical framework in the research. This is complemented by Herbert Blumer's Symbolic Interactionism, exploring interaction and the meanings individuals construct from it at a micro level. Approaching an urban vision, the idea of habitat is examined, drawing from Angela Giglia's work on habitation and culture, its construction, breakdown, and articulation with Bourdieu's habitus guide part of this work, complementing and contrasting as the research progresses. The individualized social experiences of the individuals comprising the social groups in this study are examined through Danilo Martuccelli's proposal of an individual-scale sociology, focusing on a sociology of the trials, challenges, and social supports that establish a link, at the very least, novel between the individual and society. This idea serves as a starting point to address the challenges structurally produced by society that individuals face, aiming to identify situations or contours underlying a country maintaining an armed conflict, which may go unnoticed by other sociological approaches. The work is organized into five chapters, where a dialogue is established between the topics developed in each chapter and the theoretical concepts addressed. The first chapter provides a general context of the problem, outlining the approach and structure of the work, presenting the research question, and setting the objectives to recognize and identify the interactions between the social groups studied and neighborhood reconfigurations. The second chapter presents in some detail experiences of the arrival of former members of GAOML to urban contexts, examining how these processes have occurred in the country and in Bogotá, particularly focusing on security issues and their perception, and delves into the urban context where the case of Ciudadela Santa Rosa takes place. The third chapter historically reviews part of the southeastern area of Bogotá to better understand the experience of Ciudadela Santa Rosa in greater detail. It describes the experiences of arrival and abandonment due to the various situations faced by this neighborhood, and reviews the interactions between established residents and former members of GAOML in urban spaces, and the formation of urban habitats as a result, intersecting this with the theoretical concepts presented. The fourth chapter incorporates and develops the study of experience with a focus on interaction at the individual scale, based on the theoretical references presented. The fifth chapter offers a conclusion to the work based on the findings obtained during the research.