Story: My sister has cerebral palsy and is 58 years old. She lives in NOLA but "home" is York Beach, Maine. I think she's been home maybe 5 times since 1989 as travel becomes more and more limited as her mobility and balance decline. She can walk with her crutches in the house still but when we go out she uses her chair. When we visited her and BIL in July, one thing she wistfully said was that she'd like to get home one more time before she dies. I'm hoping to be able to make that "one more time" work next summer.
We are currently renting a rustic beach house that is mostly accessible; we just have to figure how to get her into the house. The ramp is needed to traverse 2 steps and then a mini-step onto the deck. Total vertical height is 19". Helpfully, there is a 4' level here that, so I can get a visual of what might be possible when I lean it from the surface to the top of the steps. I think 5' would be the minimum that we could roll her chair up. She wouldn't be attempting to use her crutches on this- no way would I feel comfortable, and I'm sure she wouldn't either.
Anyhow... I'm going to keep looking, but one of the links that
@lanejudy shared has a location in Kittery, which is the next town south of York. DH and I might pay them a visit while we are here to see what is possible. This is all still a glimmer of a plan; I don't want my sister to get excited about coming home if we can't make it work. So far, I've not had success finding a house that is accessible from outside with a "big enough" bathroom and bedroom on the first floor, so this might be our option, if we can swing it. I'm also going to keep viewing houses. Thanks for your help, and if anyone has any suggestions or ideas, I'm happy to hear them.