Sometimes people think of Aging-In-Place or Universal Design as elements that are not needed unless one has mobility issues.  But wider doorways,  wide hallways, good lighting, and bathroom wall bracing for grab bars, etc., are all elements for living well now, and into the future.  For a list of ideas to consider for your new home or remodeling project, visit http://www.nahb.org/ and type “aging in place” into the search box.