The building to let in Lisbon, a built resource for a sustainable city

The building to let (16^th century-1976) in Lisbon is a built resource for an efficient and sustainable city. Between the first half of 16^th century and 1976 different models of building to let emerged in Lisbon. The urban rehabilitation of the city´s heritage is fundamental to Lisbon environmental and urban sustainability, in which the building to let, an abundant legacy, plays an import role. The HBIM, Historic Building Information Modeling and the 3D printing play an important role in the urban rehabilitation of this heritage.