About assisted living...I have some friends (husband and wife) that started one. Since both are nurses, but the husband was an old rockhound, they not only oversaw and did some of the construction, but they cobbled up generic care plans, dietary, etc., before they even opened.
The original building was like a one-level, bunch of one-bedroom efficiency apartments...sitting area with kitchenette (no stoves), bedroom with connecting bathroom.
They did so well, they built some more, but in a different style. They built a series of individual cabins, all around a small courtyard. All cabins on slab, with like a little covered patio in front of each.
The cabins have been a huge hit. Residents are allowed to bring their own furniture and they are a bit larger than the original apartments.
All the residents have access to regularly scheduled fun things...bingo, game night, music night, church services, with a shopping trip or two during the week. Once a quarter they can go on a lengthier, long-weekend trip (health permitting)...Florida Panhandle, Houston, Ozarks, etc.