The public housing estate that was widely used after World War II gave a moment of design and material's modern method to conventional housing. It may be relatively easy to compare more than one African countries public housing estate and to understand the character of each because they have certain amount of commonality in period, material, idea of design, and stock. Next, the issue of management method with long-term use will be shared. Targeting all of the above, this research clarifies how the public housing estate was constructed in African cities in a colonial environment and how it has changed more than 50 years since independence. This paper focuses on Baobab estate in Dakar that was the capital city of French West Africa. Baobab estate was developed during the early period by SICAP (Société Immobilière du Cap Vert), a government housing supply agency since 1950, and is one of the largest estates. The field survey was conducted in 2014. For our analysis, we used the documents that were kept by SICAP and the current physical environment of the estate recorded in residential areas.<br> In chapters three and four, the feature of the original design of Baobab is described. (1) Block plan: it was an independent plan, and various common facilities including a garage were laid out. Infrastructure was in place during development, and most of the units were equipped with a bathroom. (2) Dwelling plan: there were three types of dwellings; terrace house, semi-detached, and detached. Apartments were not included. There were 10 standard plans, eight of which use 凸 shape for verandas that were variously connected. Two of these plans had a variable planning. (3) Building system: it used modern material or parts like concrete block, precast concrete panel, and louver. The finishing method was elaborately crafted. (4) Construction activity: SICAP managed production of building elements and construction by directly hired workers. Then, high uniform quality was ensured.<br> In chapter five, to understand the change in physical residential environment within 60 years, dwelling units' shape, use, and ownership were recorded. With difference in locations, there was a difference in the expandability. The inclined block plan caused extension or subdivision into an irregular open space. Half of the units occupied the first floor as the highest floor was the fifth floor. The units above the third floor were reconstructed. Further, 60% of the housing unit occupied the original building including two to three units that were extended or reconstructed. Almost every unit used the place as a dwelling; however, some of the units combined the dwelling with a shop. In terms of ownership, 80% percent of the owners resided in their houses and very few gave it on a sublease.<br> In conclusion, this paper discusses the reason for the current situation according to the original design's features and physical changes. Since 60 years have passed, the households who moved in during the initial stages of the development are required to give a reaction for the change of life such as moving out, inheritance or multi-family residence. The extension and subdivision may be carried out by the following factors. Currently, appearance, use, and residents are the various configurations that should be considered. The factors suppressed by the changes may be the following. First, the quality of the original design is high and kept as a bone. Second, the residents can encourage living environment because of the dominant proportion of owners residing. This area expected to develop under the policy, and some plots have started developing. It needs to develop rules regarding the making of the areas for evaluating the original planning between French and other African cities.