The factors affecting sustainable construction costs on turkish construction sector

Construction industry, especially construction period and after construction the way of using buildings have great role on these effects. Therefore, developing of sustainable structures to reduce these effects is very important and in recent years in our country these kind of structures have great importance. To have sustainable properties, structure should be constructed according to some certain criteria. The main aim of this thesis is to determine the factors of affecting sustainable construction and evaluate the effects on initial investment costs First, factors on construction cost, preparing costs and budget issues, are elaborated; then, according to sustainability, sustainable development, sustaniable construction and global certification system, the eligiblty of a building about including sustainable criteria are explained and a building in Turkey which has green building certification is invetigated. In the introduction, the purpose and the content of the thesis, the factors affecting the sustainable construction costs are described briefly. In the second section, factors that affect the construction costs, also detailing and preparing the budget issues are discussed. In the third section, sustainability, sustainable development, sustainable production and international certification of a building system according to sustainable criterias that are eligible are explained along with examining the structure which has received the green building certification. İt is discussed the building components that affect the life time construction and the cost of building's sustainable optimization. İt is analyzed the factors that affect energy consumption of a sustainable construction copmaring between a standart construction with a optimization method analyzing the first investment cost. In the fourth section a questionnaire is developed based on the results od a detailed review of the literature and gives the information about sustainable structures and experiences using the form is complied by experts. Various statistical methods are used to analyized for collected data and the results are analyzied very detailed. Depending on this, economic environmental, social, industrial investments and educational factors that affect the sustainable construction costs are explained and noticed. The results help to determine the importance and the application level of factors affecting on the development of a sustainable constructions investment costs.