The influence of public action on housing demand and supply.

Summary This thesis focuses on the factors determining the demand and supply of housing, with applications to the former Nord-Pas-de-Calais region. The first chapter provides a literature review based on the 200 or so articles published in the Journal of Housing Economics during the period 2003-2012. It highlights instructive results for both novice and experienced housing economics researchers. The second chapter provides a detailed and didactic presentation of the new "Demand for Property Values" service database to capture the richness of its contents. This chapter also provides some statistics describing the housing market in Nord-Pas-de-Calais. Chapter 3 uses a hedonic analysis of housing transaction prices to explain the factors affecting their price. Apart from the "Land Value Request" service, this study uses several spatialized databases exploited via a GIS. Chapter 4 uses the results of these estimates to calculate the value of the total stock of housing and differential rent in Nord-Pas-de-Calais. These results provide keys to understanding the creation of real estate value at the scale of one of the most densely populated areas in France. They show, for example, that nearly 50% of the value of a property comes from the location alone. Chapter 5 concludes the thesis with a further development of the DiPasquale-Wheaton theoretical model with the objective of presenting the links between the different actors that make up the housing market.