Tuesday, September 30, 2025

Mapping the Housing Crisis in Portugal

The growth of short-term rental properties is a serious problem in Portugal and is contributing to a housing crisis that makes it increasingly difficult for residents to find affordable homes. des AL ojamento is a Mapbox story-map that vividly illustrates the proliferation of short-term rentals in Lisbon and Porto.

Users can choose to explore the growth of ALs (Alojamento Local — short-term tourist rental accommodation) in either Porto or Lisbon using the buttons in the bottom-right corner of the map. As you scroll through the story, dots representing ALs appear on the map in chronological order, showing how they have spread over time.

A central theme of the visualization is the concentration of ALs in historic city-centre neighbourhoods, often in properties managed by professional companies rather than by individual hosts. The map illustrates how this shift has coincided with a decline in housing stock and resident populations in the most affected neighborhoods. 

The accompanying text also places Portugal’s situation in an international context, showing how other cities such as Barcelona, Paris, Amsterdam, and New York have adopted far stricter limits on short-term rentals. The overall argument is that unchecked AL expansion has transformed parts of Lisbon and Porto into tourist-oriented spaces, intensifying the housing shortage and raising questions about who the city is ultimately for.

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