Real estate economics is the study of how people use their money to buy, sell, and rent land, buildings, and other properties. It focuses on how land, buildings, and other properties are valued and how they are used to create wealth and financial security. For example, when people buy land or a house, they usually pay more money than is the actual worth of the land or the house, in order to make a profit from selling the property later on. They also look at how taxes, inflation, and other factors affect the value of properties.