In order to meet the high housing demand and location requirements, developers in large cities increasingly often purchase former industrial sites for conversion and redevelopment. The authors in the article conducted a survey to gauge interest in residential development on post-industrial sites in two countries (in Poland and Slovakia) and determined the group of people interested in this sector. The main focus of the survey was to gain insight into the factors that motivate the purchase of real estate and influence the choice of residential property location. Another goal of the study was to determine the importance of factors that influence decisions to purchase real estate in a post-industrial area. As a result of the survey, the authors also determined whether potential buyers paid attention to the previous development of a property and whether they were aware of the potential risks associated with converting a brownfield site to residential use.