All rights reservedHalleux, Jean-MarieVandermeer, Marie-Caroline2024-09-042024-09-042016978-85-7785-551-1https://hdl.handle.net/20.500.14235/1936Proceedings of the IV World Planning Schools Congress, July 3-8th, 2016 : Global crisis, planning and challenges to spatial justice in the north and in the southLand policies that aim to supply land on the industrial and commercial land markets are common in many regions and states. These policies generally take the form of public developments where the authorities develop economic estates to accommodate businesses. These land supply policies are based on the argument according to which the availability of land cheap if possible is an essential factor in territorial attractiveness and competitive- ness. The research subject developed in our proposal originates from the discrepancy between this argument and the scientific literature devoted to regional development. Indeed, unlike elected representatives and economic development agencies, scholars active in the field of regional sciences only very rarely refer to the impact of the land markets on levels of development. Rather than focusing on the theme of land prices and land availability, regional scientists underline the importance of intangible factors such as innovation, entrepreneur- ship, education, integration into networks, etc. In view of this difference, we consider it useful to assess the economic effectiveness of land supply policies by defining the true role of industrial and commercial land availability and prices in relation to economic development. Assessing the appropriateness of generous planning policies concerning economic land is all the more important since these policies are emphasised in moments of crisis and difficult economic contexts. Moreover, assessing land supply policies is necessary due to their impact on the urban sprawl of economic activities.EnglishopenAccessconferenceObject1489-1491