system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How does the president moving into the white house work?

Okay,  so like how long after being sworn in does he move in?
 •Does he bring all his stuff from home
or does the white house provide it all?
 • Does he continue paying for his personal house during this?
 • Does he pay for bills in the white house ( water, electricity, etc.)
 •Can the white house be painted (inside) and decorated differently to suit personal styles?
gpt
The move is accomplished very fast - during the inaugural ceremony, in fact.  The idea is the old president will leave the White House as it was in his term - and a few hours later, the new president will enter a White House full of his family's possessions, ready for a decorator to begin immediately.  No time is lost.  It's quite a feat of logistics.

The first family, usually FLOTUS, is expected to redecorate certain parts of the White House to their style quickly.  Other parts, like the rooms on the tour, stay mostly the same.  Depends on the tastes of the family.

Edit:  The tour rooms, and public areas, do change but it's mostly an issue of circulating existing pieces and motifs.  Also of note, the National Gallery makes much of its collection available for temporary loan to the White House for the decorating of the Oval.