The availability of rental houses has increased in many major cities. Data analysis of 20 district capitals and autonomous regions in Portugal shows that the rental market supply grew in 16 of them over the past year. Significant increases were seen in Viseu (a doubling, or +116%), Viana do Castelo (92%), Porto (71%), Beja (67%), Braga (62%), Aveiro (61%), Guarda (61%), Coimbra (57%) and Lisbon...