Altogether there are 18 municipalities that make up the Metropolitan Area of Lisbon (AML), where almost three million people live. In an analysis of the offer of real estate contained in this territory present in bpiexpressoimobiliario.pt, it is verified that 53,688 dwellings are in commercialization, of which 37,592 are apartments and 16,096 dwellings. The offer is unequal in this territorial extension since in only five counties is contained more than half of the houses for sale.