Today, construction companies operate in a turbulent, unpredictable and uncertain environment for development. Constant changes in the market contribute to this, including: unpredictable price changes, an unstable labor market, and a constant growth in the demand for better quality services. Also, there is increasing competition in business due to the increase in the number of large international companies that are taking over an increasing share of the market. In order for construction companies to survive in such risky market, they use various financial levers to separate themselves from the competition and survive in the business world. Arguably, special purpose vechicles are one of the most valuable financial levers that can help construction business companies. Special purpose vechicles do not only serve the interests of companies in order to gain an advantage over the competition, but also contribute to the development of the economy through the implementation of infrastructural and other mega-projects that are beneficial to the general public. This thesis explains the need of use of special purpose vechicles in the business of construction companies. Here is shown a legal and financial forms in which it appears. The disadvantages and consequences of its excessive use are explained, as well as their advantages and the problems they solve. The application of special purpose vechicles in public-private partnerships is also presented, and regulations related to public procurement, contracts and concessions are discussed. At the end of the thesis is a case study of two large projects that were implemented through a public-private partnership using special purpose vechicles as a private partner.