During the post-World War II period, Turkey's housing supply models were limited to individual housings. Three main trends in the construction industry helped overcome this limitation to a certain extent. These were cooperative societies, spontaneous squatter housing and the build-sell process. Build-sell process later became the most obvious reflection of urban transformation in the 1950s and 1960s. Within this context, this study examines the housing policy of the period and the build-sell process as well as the Rer-1 Apartment Block designed in line with the build-sell process. The Rer-1 Apartment Block was designed and implemented by architect Nejat Ersin between the years 1962-1964, and was constructed in Aşağı Ayrancı District in Ankara. This specific apartment block was examined as an extraordinary example of the build-sell process - which rejects architectural concerns and prioritises profits - as it still incorporated such concerns despite being designed adhering to logic of the build-sell process. For the purpose of this study, an oral history study was conducted with Nejat Ersin. It was, therefore, possible to evaluate Nejat Ersin's apartment block, presenting a new experience in the build-sell context, within the scope of era's social, cultural, political and economic conjecture. The Rer-1 Apartment Block was scrutinized from the build-sell process aspect within the scope of the architect's professional approach.
