Like any developing country, which is witnessing an exponential demographic expansion, Algeria has experienced an unsustainable housing crisis, for which subdivisions are a suitable response to the growing demand for building land. However, the intensive production effort of the housing estates has not often yielded the expected results, since this quantitative expansion, which is often unfinished, shows poor quality. However, a fairly large number of actors intervene to varying degrees, without improving the overall quality of the product. Whereas the subdivision is not just an inert urban form, conceived as a parcel division, it is rather a means of urban development that must meet the quality requirements of the living environment. In Bechar, south of Algeria, precisely, the successive production of housing estates gives today a depreciated image, reflecting an unfinished building site. This article looks for ways to improve the quality of life in these living spaces, defining the strategic principles that can promote the urban and environmental quality of subdivisions and the role of the different actors in terms of quality: from process to product. To evaluate the subdivision and promote its quality, we will adopt a site analysis grid, which will allow us to physically analyze the subdivisions, identify strengths and weaknesses with the ultimate goal of controlling impacts on the external environment, and then define strategies for a more satisfactory indoor environment than the existing one.

Having experienced in the past a fatal housing crisis, likewise any developing country with a rapidly growing population. The demands for building land in Algeria coupled with residential subdivisions have, therefore, known a real success. In Bechar (city of the south of Algeria), the increased production of the residential subdivisions (since the eighties) has not often given the expected results. Instead, we are witnessing poor quality, and often an unfinished production. For the most part, subdivisions are displayed in all their baseness, defying the rules of art and town planning. Whereas, the subdivision is not only an inert urban form conceived in the form of plot division, rather, it is a mean of urban development that must meet the quality requirements of the living environment.While the successive production of residential subdivisions today gives a depreciated image, reflecting an uncompleted construction site, this article aims to shed light on this phenomenon and seeks avenues capable of improving the quality of life in these living spaces.