This article was published on Forbes and made some interesting points.
http://www.forbes.com/sites/ashleaebeling/2014/09/03/is-aging-in-place-a-pipe-dream/
We could not agree more that getting prepared now will give you more options in the future and if someone is planning a renovation accessibility should certainly be a consideration.
Lifts and elevators can be incorporated in ways that make them blend in rather than stand out while still preserving the function of accessibility.