Here’s what to do.
This feature unlocks afterResident Serviceshas upgraded from a tent to a building.
Go into yourResident Servicesbuilding.

Resident Services is open 24 hours a day.
Sit in the chair on the left to get Tom Nook’s attention.
ChooseI want to relocate.

Tom will charge you a fee of 30,000 Bells to move your house.
ChooseI’m ready to moveto confirm.
Unlike your earlier mortgage payments, you have to pay the entire moving fee at once.

Nook will place a moving kit into your pockets.
If your pockets are full when he tries to do so, you’ll have to come back later.
Leave Resident Services and go to the spot you want to move your house to.

PressXto open your pockets, and snag the moving kit.
ChooseBuild herefrom the menu that opens.
To correctly place your house, you need an open space five squares wide by four squares deep.

What Happens to Your House While You Move?
Meanwhile, however, your home will stay in its original location.
Other than Resident Services, you’re free to find new sites for every building on the island.
It is a little more expensive to move the museum, stores, or neighbors' homes.
However, Tom Nook will charge you 50,000 Bells for this service.
From there, the relocation process is the same as it is for your house.