A law enforcement official tells CNN that the Secret Service is considering renting a whole floor of the famed tower in order to establish a 24/7 command post to help ensure the safety of the future First Family, who won't all be moving to the White House in January.
Melania and 10-year-old Barron will continue to live in Trump Tower until the end of Barron's school year, Trump has said.
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Regardless of when they relocate, the command post at Trump Tower won't be cheap. The going price for the space is around $1.5 million annually.
The price tag is striking, but it's not just the cost that's raising eyebrows. The Trump Organization owns Trump Tower, so tax payers would be paying the President-elect for his own security.
Officials say plans are still evolving since many details of the presidential transition are still up in the air.
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A separate law enforcement official says the number of NYPD officers protecting Trump Tower could grow to 300, at a cost of about $1 million per day, adding that a separate command may be needed just to focus on security for the future president.