How many families cannot afford a house? Most of the population living in Latin America's biggest cities cannot access formal housing due to insufficient income, steep mortgage interest rates and high prices, as well as the inability to document their income, according to "Room for Development: Housing Markets in Latin America and the Caribbean", the latest edition of the IDB's flagship publication Development in the Americas. The figure shows that, when all those factors are taken into account, over two thirds of the households of Caracas, Machala, Santa Cruz, La Paz, Lima, Santo Domingo, Buenos Aires, San Pedro Sula, and Managua cannot afford formal housing.