This specialist diploma thesis on the topic of Analysis of the Profitability of Investments in a Selected Company’s Own Production Capacities was made under the influence of the business opportunity for the construction company Aluminijski krovni sistemi d.o.o. to invest in its own production capacities in addition to its existing portfolio. This thesis examines the selected project from logistical and financial aspects in order to assess its cost-effectiveness, the current ability of the company to carry out the project and manage currently unknown production processes, and potential future needs for the production plant. The opportunity to invest in production capacities arose due to the long-term cooperation with the German construction company and manufacturer of aluminum, roof, and facade sheets Kalzip GmbH. In order to reduce costs, the production plant for products from the Kalbau® line, which consists of aluminum façade sheets, roof trapezoidal and perforated sheets, as well as facade sheet TF800R, is being relocated. By researching the selected markets, opportunities in them and the company Aluminijski krovni sistemi, current and potential needs for quality project execution were determined and it was concluded that the selected company, with the help of Kalzip, meets the most needs. After the insight into current work orders and the projected market demand for these products, it was determined that the investment project will be profitable in a relatively short time.