On Tue, 24 Nov 2020 15:05:57 -0500, Keyser Söze
wrote:

...from Newsweek:

"The president and his family will occupy the White House until January
19, 2021. In the wee hours of January 20, President Trump and his family
will remove the last of their belongings and say a final goodbye to the
White House permanent staff."

I did know this:

"Some presidents have left a note of congratulations and good luck for
their successor. By tradition, the President elect and his spouse will
arrive for morning coffee with the president before they leave to ride
jointly to the Inaugural festivities at the Capitol. After the swearing
in, the ex-president will fly off to his post presidential home. The new
president takes up residence in the White House."

It is pretty much old news. There have been a number of TV shows about
how the White House staff turns the building around for the new
president.
My BIL was there for Nixon, Carter, Reagan and Ford.
The politicians come and go but the USCS and the contractors stay.