LAMARTINE aims at measuring building and land use regulations and evaluate their socioeconomic and environmental impact. Starting from the observation that the share of land in housing value has been constantly increasing, this project aims to understand the potential role of land use regulation in this rise. To this end, we first propose to build a dataset shared with the scientific community and a broader audience to measure all the regulations applied on land parcels and conditioning their construction potential, Second, using this data set, we are willing to decompose the value of parcels between their structure and land components. This should allow us assess the value of Land in France, its distribution between households and the redistributive potential of land tax. Third, we also want to investigate the drivers of land use regulation and its consequences on real estate market dynamics as prices, construction and city shape. Finally, these data will be used to develop spatial equilibrium models to document the nationwide spillovers of land use regulation, their welfare and redistributive effects to help the design of acceptable environmental policies.