The Center for Health Design based in California has produced an excellent checklist that focuses on features specific to older people. Of course this means that the features will generally benefit others as well. The checklist covers Home and Community including residential, Healthcare and design of clinics and emergency rooms, and Workplace designs and strategies.
The checklist matrix lists the strategy or goal, design considerations for the built environment, and the universal implications (benefits for everyone). For example, the goal of ageing in place in one’s home requires (among others) features that are easy to clean and maintain, and the universal implication is that it increases the suitability of housing for a wider range of users and potential buyers. The checklist is meant to support a universal design approach to environments for aging populations. It is not meant to be used as a list of comprehensive specifications, but a “thought starter”. It is probably best used to guide the discussion of design teams at the outset of a project. The checklist has a comprehensive reference list to support the content and for further reading.