I just added a comment.
Nobody's older. Nobody's got a kid. Nobody's disabled. What happens when that extra stuff we're supposed to be living without is a cane, or a stroller, or a wheelchair?
The same friend I mentioned?
He's now a realtor.
He says the trend (and I see it here) is for multi-story homes, rather than ranches. I know, a little off subject.
Yeah, that's great for 20, even 30 somethings, but there comes a time, even if you're in great shape, that stairs loose their charm.
Now I seem like an old fogey, but your heart and lungs can be in great shape for stairs (or maybe not), but you start to consider things like taking a tumble and breaking something, God forbid a hip.
I'd like to see housing developed where people can have their own separate living spaces, meaning small living room, bedroom, bath and washer dryer area, but sharing a kitchen. That way people have the security of having someone else nearby in case of an emergency, but you have privacy.
I was doing temp assignments for a whole working in model homes. There was this one design that intrigued me. It did have an upstairs, but that was the key.
Downstairs had the typical set up. There was a master bedroom/bath, and an office that could be a bedroom. Across from that was a separate dining room that could also be a bedroom, with a half bath that could have a shower added.
The great thing was that upstairs there was an open area way large enough to be a living room, and two bedroom and a full bath. You could easily set up the bedroom with the back to the bathroom (for plumbing) as a small kitchen/laundry room. You could downstair put in a privacy wall/screen so the upstairs person could come in and use the stairs without being seen by the occupant of the first floor, or put stairs on the outside of the house and add an entry door right up there.
That would make it perfect to rent out, or for adult children, or even a parent if they didn't mind the stairs.