This article work on the analyze of secondary housing architecture on South Aegean and Mediterranean coastal areas of Turkey, determination of the way and the tendencies of secondary housing owners to participate in a tourism activity that rents their property and to design a model on reusing of secondary housing in tourism sector by the help of interview, questionnaire, analytic research methods. In this point of view, this research is based on 4 chapters. Chapter 1; the concept and the main characteristics, constitution and the development in Turkey and in the other side of the world, types and categories, examination of quantitative datum in Turkey of secondary housing are shown in this chapter. Chapter 2; the interview, survey and the analytic research results are shown in this chapter. The architectural analytic research is consisted of secondary housing plan schemes, settlement types and building mass. Questionnaire is consisted of secondary housing owners' profiles, their tourism activity and secondary housing usage addiction, secondary housing characteristics, their tendencies to participate in a tourism activity that rent their property and its method. Chapter 3; this chapter is consisted of the model study. Determination of the objectives, planning, and organization, interrelations of the organization with other systems, human resources and the duties of the units in tactical planning perspectives are the subjects that are considered in the model. Proposals of the model requirements are also shown according to architecture of secondary housing and user requirements in the operation of the organization. Chapter 4; conclusion and evaluation of the research are shown in this chapter.