Animal Crossing: New LeafEdit
Down Payment: 10,000 bells
Buying House: 39,800 bells
First Expansion: 98,000 bells
Second Expansion: 198,000 bells
Upstairs Room: 298,000 bells
Subtotal: 643,800 bells
These other expansions can be done in any order after the upstairs room
Left Room 4*4: 348,000 bells
Left Room 6*6: 498,000 bells
Left Room 8*8: 598,000 bells
Right Room 4*4: 348,000 bells
Right Room 6*6: 498,000 bells
Right Room 8*8: 598,000 bells
Back Room 4*4: 348,000 bells
Back Room 6*6: 498,000 bells