I would look for a "single level" home for you, or a single level condo (they do exist).
. I would also put you in touch with my contractor who specializes in accommodations. He installs grab bars and hand rails and other conveniences that make life with a disability easier. You will most likely have to add these to any older home you find. The newer Condo developments will have some features, but rarely will you find the grab bars pre installed.