Progressive development projects are aimed at enforcing the process of dwelling evolution which has been observed in informal settlements by providing conditions that are favourable for housing development. This study suggests that, under these created environments, dwelling evolution presented particular characteristics that differentiated it from similar processes in other contexts. / A long-term assessment of the phenomenon of dwelling evolution was conducted at "El Gallo", a progressive development project in Ciudad Guayana, Venezuela. Dwelling evolution was examined by observing aspects of the process that were relevant to the case study. These included changes in the dwelling area, spatial configuration and functional layout. The case study provided different levels of user participation in the early stages of development that were also considered in the analysis. / The findings indicated a marked change from the temporary dwelling to the permanent structure. This process differed from the gradual replacement of initial shacks that is characteristic of informal settlements. The findings also revealed that the early involvement of the user, as well as the utilization of user-responsive designs for the permanent structure, resulted in lesser stages of dwelling evolution and higher degrees of dwelling development.

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