The Incremental Housing project in Iquique, Chile, and Monterrey, Mexico produces half-finished houses that are completed by the residents and contain only the essentials of a built home—bathroom, kitchen, structure and roof—in order to stretch resources further to meet the rapidly growing demand for housing. Concrete, brick concrete, wood panel houses by architects Alejandro Aravena, Tomás Cortese, Emilio de la Cerda, Andrés Iacobelli, and Alfonso Montero, Elemental (Chile). Iquique, Chile, 2003-4. Photo courtesy of Elemental.