Chateau (castle) brownfields are specific properties that scientific research has avoided so far. In countries where the continuity of ownership and use of chateau residences has not been disrupted, chateau brownfields have not developed such a phenomenon and architectural and landscape peculiarity, as was the case in the Czech Republic, and therefore also in the countries of the former Eastern Bloc. We refer here to the processes related to the interruption of property relations in the form of nationalization and expropriation in the first half of the 20th century, which subsequently alternated with restitution and ownership disputes etc., which were behind the creation of these specific brownfields, perhaps even more than the usual causes of a market nature connected mainly with economic efficiency. The aim of this article is to pilot identify the original causes of chateau brownfields in the Czech Republic and to categorize them against the background of a synthesis of theoretical knowledge and specific examples of chateau settlements in three regions of the Moravian-Silesian Region.