President-elect Donald Trump has captured the White House, but he may have to wait a while to ensconce himself inside the Oval Office.

Former George W. Bush advisor Karl Rove said Wednesday that major security upgrades are planned for the ceremonial office and seat of presidential power – and that it could put the office out of commission for up to a year.

If that occurs, he said, President Trump might have to spend up to a quarter of his term working out of the Eisenhower Executive Office Building across the street – where President Richard Nixon labored and made some of his infamous White House recordings.

'My understanding is that for the first year of his time in office, President Trump will not have the Oval Office,' Rove told Fox News on Wednesday.

DON'T GET TOO COMFORTABLE: President-elect Donald Trump would have to relocate across the street if renovations to beef up security in the Oval Office were to take place

'President Obama could have told the Secret Service, “I know you want to modernize the Oval Office with security enhancements – literally strip it down to the bare walls and build it back up so we’ve got bullet proof glass and so forth and so on, security arrangements in it, in my last year in office,"' Rove said.

'But Instead he said, "Why don’t you do that [with] whoever comes next so the president of the United States, President Trump, my understanding is, will spend most of his first year using Richard Nixon’s old office in the Old Executive Office Building across executive drive and up the Navy steps."

He was referring to the renamed Eisenhower Executive Office Building, the ornate building on the White House grounds that houses many top government officials.

Trump, a real estate mogul, is particularly attuned to the importance of location, architecture, and all that it signifies. He repeatedly stressed during the campaign that his new luxury hotel located in the former Old Post Office building in Washington, D.C. was 'under-budget and ahead of schedule.'

The building dominates the DC skyline, and is located on Pennsylvania Avenue near the White House.

RESOLUTE: President Obama worked out of the Oval Office throughout his tenure, though President-elect Donald Trump might not be so lucky

Obama administration employees stand on a balcony of the Eisenhower Executive Office Building in hopes of catching a glimpse of President-Elect Donald Trump's arrival at the White House November 10, 2016 in Washington, DC

COULD USE SOME WALL-TO-WALL: The Oval Office was renovated in 2001

Richard Nixon, seen here with Vice President Gerald Ford, used the Oval Office mainly for ceremonial purposes

AT LEAST THE APPLES ARE PORTABLE: Trump would have to vacate the office for up to a year during renovations

A worker refurbishes the Oval Office for President Kennedy's arrival

Trump currently is holding transition meetings from inside Trump Tower on 5th Avenue in Manhattan.

A Secret Service spokesman wouldn't comment on or confirm the existence of any such renovation plans. 'That would have to come from the White House staff,' Shawn Holtzclaw of the Secret Service told DailyMail.com. The White House didn't immediately provide comment while President Obama was overseas.

Back in 2013, around the time of a major construction project that occured on White House grounds, RealClearPolitics reported on construction of a replica Oval Office to be housed inside the OEOB during a planned two-year West Wing renovation. The report also referenced a 'down-to-the-studs' overhaul.

The article by Alexis Simendinger noted that Herbert Hoover had to endure substantial repairs to the 1909-designed office following a 1929 electrical fire. President Nixon used the Oval Office for ceremonial purposes. He made Room 180 inside the OEOB his working office, and used it to record many of the Watergate tapes in the 1970s.