The situation regarding abandoned buildings and sites on the territory of the Czech Republic is currently very evident. Such buildings and sites can be described as so-called brownfields that may have some negative effects on their surroundings and on the region where they are located. The above mentioned contribution focuses on the abandoned buildings and sites in question that are situated near municipalities with extended competence. The aim of the paper is to assess the situation in the field of brownfields during the COVID-19 pandemic in selected areas of MECs in the Czech Republic. With respect to the aim of the paper, primary research was conducted, and the method of interviewing was applied. For the purpose of the questionnaire survey, four MEC administrative districts were always selected from each of the regions. The response rate to the research was 38.5% of the addressed respondents (MECs). From the point of view of the authors of the paper, the mentioned questionnaire survey is considered to be a pilot version. The results clearly showed that the existence of brownfields on the territories of MECs is more than evident. With respect to the regeneration of brownfields, MECs could be best supported with funds they could obtain, amendments to legislation and clearly defined rules for raising funds. Furthermore, according to the respondents, the COVID-19 pandemic had no effect on emergence of new brownfields on their territory.