Another facet of “renting” to your kid is that if they get divorced, the inlaw has no claim to the house, so it won’t get caught up on dividing the property. So it can be a subtle way of protecting your kid’s living arrangement without being overtly skeptical of the relationship.
I know someone renting a second house to their kid. I don’t know the full arraignments of what is going on with that, though.
Another facet of “renting” to your kid is that if they get divorced, the inlaw has no claim to the house, so it won’t get caught up on dividing the property. So it can be a subtle way of protecting your kid’s living arrangement without being overtly skeptical of the relationship.