There is no cheat.
There are four models.
Nook's Cranny
Nook N'Go
Nook Way
Nookingtons
ok well do u know how long it takes 2 get a new model? i have had this game 4 2 weeks and we are already enlarging but i have had the 1 4 gamecube 4 about 4 months but has not even enlarged once wait...im confused 🤔 🤔 🤔 HELP PLZ ASAP DO U HEAR ME ASAP lol jk
You have to buy stuff from the store to expand.
For the final one you need someone to buy somethin from your town.