Many developed nations face the challenge of accommodating a growing, ageing population and creating appropriate forms of housing suitable for older people. Written by an architect, this practice-led ethnography of retirement housing offers new perspectives on environmental gerontology.Through stories and visual vignettes, it presents a range of stakeholders involved in the design, construction, management and habitation of third-age housing in the UK, highlighting the importance of design decisions for the everyday lives of older people.Drawing on unique and interdisciplinary research methods, its fresh approach shows researchers how well-designed retirement housing can enable older people to successfully age in place for longer, and challenges designers, developers and providers to evolve their design practices and products.