I offer the following website in keeping with Ben Franklin's "RESOLUTION.Resolve to perform what you ought; perform without fail what you resolve.": http://www.easylivinghome.org/. This site offers some features that homes OUGHT to include in order to be accessible to more people. Since we are ALL aging and/or dying with each breath, hadn't we better think and plan for the future & the future comfort of ourselves and our older loved ones in our homes? Gosh, what would be the loss if all builders started including door levers instead of door knobs & other easy to make changes. Even a young person can appreciate the ease of opening a door with a lever when one's arms are loaded down with groceries.
From easylivinghome: "What features does my EasyLiving Home offer? Easy Access with a step-free entrance of not more than 1/2" from a driveway, sidewalk or other firm route into the central living area. Easy Passage because the exterior door that provides the step-free entrance and every interior passage door on the main level (including bathrooms) provides ample clear passage space. Easy Use with no less than one bedroom, a kitchen, some entertainment area, and at least one full bathroom with sufficient maneuvering space . . . all on the main floor."