Time and space significantly affect the autonomy and the care needs of people. In recent years, many countries have adopted an ageing in place strategy, which requires, however, an age-friendly built environment and a dedicated care system. This paper addresses the conditioning role of the built environment on the life of frail older people ageing alone at home. After a brief review of the debate, findings from the IN-AGE research carried out in three regions of Italy are presented, to conclude with some policy suggestions.