Oh and if you do it when you have a random villager the villager might change x.x or the house plot might not be there sometimes...
But if you have asked someone to move in the day before it will always be that villager when you start a new save file, and they will always have a plot somewhere c: It's super helpful, I do it so I can make little gardens for my villagers too, but Cole is gonna have to share his garden with me hehe c: