According to European treaties, the main objective of the Eurosystem is to maintain price stability through a two pillars strategy. In opposition to the Fed, the ECB has clarified that price stability is measured by inflation rates of below, but close to, 2% over the medium term. To get this target, the first pillar gives the main role to the money and the second pillar consists in an analysis based on a large set of economic and financial indicators. In this respect, it is well known that asset prices are variables of great interest in the conduct of the monetary policy and will certainly be more and more integrated in the future in the monetary policy makers decision process. As noted by Otmar Issing in his introductory statement at a ECB workshop in December 2003, ”a sufficient forward looking cenral bank ... wil naturally conduct a comprehensive analysis of all potential consequences of asset price boom and bust cycles”.
Especially, among all asset prices, the monitoring of housing prices is one of the element of regular assessments carried out by central banks. Indeed, housing finance has an impact on the transmission of monetary policy to the economy and a better understanding of the housing sector could lead to more accurate inflation forecasts. Recently, some researchers have put forward that central banks should rather target asset prices instead of inflation in their strategy. For example, Leamer (2007) proposes a monetary policy based on housing starts rather than output gap.