An ageing population raises the question of providing adequate housing that enables older people to age in place without losing autonomy and independence. Except for the issue of accessibility, no framework exists that specifically outlines a standard to achieve and, as a result, interventions on existing or on new buildings may be inconsistent without leading to a desired rise in living standards. This research addresses this issue by presenting a framework for the assessment of the age-appropriateness of housing through a number of metrics that detect and identify physical and non-physical features of a home environment to enable ageing in place. The study combines data from a qualitative systematic literature review of 93 papers and qualitative data from structured interviews with four experts in the field. As a result, 71 metrics were identified, divided into eight main domains, to describe the framework. This paper provides an improved understanding of the housing features that enable ageing in place. The tool categorizes and rates qualitative and quantitative aspects that contribute to the age-friendliness of housing, resulting in an easy to adopt assessment framework. This is a valuable means for stakeholders engaged in improving the current housing stock or in constructing new buildings for older people.