The aim of this final work was to analyze the current state of Tolić Projektiranje d.o.o. to assess their needs, wishes and expectations, and in order to introduce quality systems into the enterprise, to influence on improving the business and raising the business to a higher level. The survey was emailed to users of their services, and 20 out of 50 answered. The survey was conducted on a disposable and deliberate sample in order to obtain the realistic wishes and expectations of service users that were needed for further research and development of the company according to ISO 9001: 2015. An interview was also conducted with the company's director. This final work presents the changes introduced by ISO 9001: 2015 in regard to the previous standard and the introduction of the quality system is shown, which helped to compile business development proposals. The current state of the company was analyzed through SWOT analysis and the company's goals, mission and vision were presented. The survey data showed that the proposals related to faster communication, bidding and execution deadlines, and suggesting a catalog of works that would have contributed to the company's reputation and helped current and future users in using the services of the company. The interview concluded that the administration, consisting of two members, made decisions jointly, but other departments in the company are not always familiar with all company decisions and goals. It is suggested that all departments are united in making decisions and everyone posts their goals and possible risks to reduce uncertainty in decision-making. This way everyone would know which company's goals were in a given time so all business processes could be done within a certain time and in an agreed manner because business processes in the company must be connected and well-organized.