JEL Classification R30 • C45 • C80 1 The economic relevance of the real estate sector und its recent dynamics In most countries, the real estate sector plays a dominant role-as measured by volume, share of the economy, and workforce; but its turnover ratio and therefore its ability to generate profit for traditional banks or transaction and consultancy companies is lower than it is for the stock or bond market. For example, in the US, the total value of the real estate market amounted to about $46.