Why Aren’t My Villagers’ New Houses Being Built?
There are two possibilities here. First of all, when Tom Nook asks you to build three houses by kitting them out with furniture, you need to be sure you haven’t put your outdoor furniture too far away from the core house. In addition, you have to check the order lists for furniture after you have submitted all three internal and external items to get the go ahead for a villager to move in. Finally, you need to have all three of these houses ready before even one villager will move in. They will move in one at a time during the following days.