The South-eastern Anatolian Project (GAP) region of Turkey has a need for the rapid development of residential housing projects for the resettlement of people made homeless by the rising water reservoirs of the Birecik dam established for hydroelectric power generation and irrigation. The construction technology utilised in such a project must take into account the climatic and socio-cultural conditions of the region, and consideration should be given to employment of the local manpower. To cover the housing demand, an earthen technology was developed resulting in a case-study building in cooperation with Prefabricated Concrete Company 'KAM Beton' in 1999 for the Urfa-GAP & BKI (Regional Development Administration - Turkey). Case-study building is a two-storied earthen house designed with a prefabricated reinforced concrete installation wall that contains the plumbing and electrical facilities required both for the kitchen and bathroom. Construction of the foundations has obtained government support. Prefabricated concrete installation walls are to be engineered and manufactured by private enterprise. The earthen walls of the self-built masonry building are to be constructed by the local home-owners. Urfa case-study building aims to study the feasibility of combining advantages of different construction techniques. It demonstrates that self-built earthen house can be used with prefabricated installation wall to meet the benefits both of local workmanship and industrialised construction technology.