Cost management is substantial for every enterprise, which is why in this paper the focus will be set at quality cost in construction projects. In the introduction we have defined quality costs, divided them in basic groups and outlined their characteristics. For successful quality cost management, it is essential to understand the management model in order to reduce low quality costs to minimum by choosing the most suitable model. After creating a database, we have spotted a disproportion in our project and have added a sample to each disproportion and offered a solution, thereby avoiding repetition of costs due to low quality. At the end of the paper we made a conclusion on how to decrease quality costs and via diagram have depicted how should a structure quality costs of monitoring in construction projects look be developed.