A defense expert in real estate valuation suggested that a developer's vision could add over a billion dollars of value to a vacant lot.

Frederick Chin, who was qualified as an expert in real estate valuation, argued that Donald Trump used the "as if" investment value of his properties, rather than their current "as is" market value. According to Chin, the "as if" valuation perspective allows a real estate developer to consider the long-term development plans of a property when determining its value.

For example, a vacant lot in the heart of New York City might have a market value of $500 million, according to Chin. A real estate developer who envisions a hotel on the property might see its investment value closer to $2 billion.

Judge Arthur Engoron, who frequently interjected into Chin's testimony, described the approach that resulted in a $1.5 billion difference in the value of a hypothetical vacant lot as a developer's "genius factor."

Donald Trump’s lawyers are seeking to appeal last week’s decision reinstating the gag orders in the former president’s civil fraud trial.

New York’s Appellate Division First Department vacated a temporary stay of the gag orders last week, and Trump’s lawyers are now seeking expedited leave to appeal the decision to New York’s Court of Appeals – the highest court in the New York State system.

Trump’s lawyers requested their application be reviewed by Judge David Friedman, who initially lifted the gag order on Nov. 16 before his decision was vacated by a panel of judges.

“Without expedited review, Petitioners will continue to suffer irreparable injury daily, as they are silenced on matters implicating the appearance of bias and impropriety on the bench during a trial of immense stakes,” Trump’s lawyers wrote in a new filing Monday morning.

In an emergency application for leave to appeal, Trump’s lawyers argued the gag orders “silence the core political speech of the leading Presidential candidate … at the height of President Trump’s campaign.”

Repeating past arguments against the gag order, Trump’s lawyers said the gag orders prohibit necessary speech to highlight the actions of Judge Arthur Engoron’s clerk, which they argue amount to “demonstrable partisan bias on the bench.”

“At stake is a civil defendant’s ability to critique, without fear of reprisal, the court presiding over a bench trial historic both by virtue of the parties thereto and the Attorney General’s novel and open manipulation of the Executive Law to punish her political enemies,” Trump’s lawyers wrote.

Donald Trump's lawyers are scheduled to call three expert witnesses to begin the last full week of their case.

Defense lawyers first plan to call real estate valuation authority Frederick Chin, whose expert report, filed with the court, faults the New York attorney general for taking a "narrow and limited view" of the value of Trump's assets in her complaint against the former president.

Like other defense experts, Chin argues in his report that Trump fairly valued his assets and properly disclosed his valuation approach to his lenders.

After Chin testifies, Trump's lawyers plan to call two experts to testify about Trump's valuation of his Mar-a-Lago property, which has been the subject of bitter debate since the start of the trial. Judge Arthur Engoron, in his pretrial partial summary judgment, already decided that Trump overvalued the property by at least 2,300%, and the defense experts -- Lawrence Moens and John Shubin -- are expected to challenge the judge's findings.

Defense attorneys intend to complete their questioning of the three expert witnesses by Wednesday, when Eric Trump is expected to return to the witness stand.

Judge Engoron again denied a request from the defense to subpoena the Trump Organization's independent monitor for testimony.

Twice this week, Trump's attorneys unsuccessfully sought to call to the stand former judge Barbara Jones, the monitor appointed by Engoron to oversee the Trump Organization's finances after the New York attorney general accused the firm of fraud.

Trump attorney Chris Kise tried for a third time Friday.

"We should be entitled to the benefit of having Judge Jones here to respond to those questions about any ambiguities that might exist in her reports," Kise said.

State attorney Andrew Amer argued against the request, citing Jones' immunity as an agent of the court.

"Your request to subpoena Judge Jones is denied," Engoron said, describing the request as a "dangerous infringement on court immunity."

In her latest report issued to Engoron this week, Jones reported that the Trump Organization was "in compliance" but under "enhanced monitoring."

Court was subsequently adjourned for the day following Engoron's ruling.

Donald Trump Jr. struggled to answer questions when pressed about why former Trump Organization CFO Allen Weisselberg departed the family's firm.

"Because some legal issues he got himself into," Trump Jr. said, declining to offer specifics about Weisselberg's guilty plea on tax evasion charges last year.

Previously giving lengthy answers to questions about his background and even smiling with the judge, Trump Jr. appeared tense on the witness stand as he answered questions about Weisselberg.

"The specific event was he was indicted," Trump Jr. said.

He added that when began working for the Trump Organization as an executive vice president in the 2010s, Weisselberg outranked him. Trump Jr. would seek Weisselberg's approval for certain business decisions such as refinancing loans.

"Who is above you in your role as an executive vice president in the Trump Organization?" state attorney Colleen Faherty asked.

"Obviously I would have reported to my father in that period of time … people like Allen Weisselberg would have still been senior to me," Trump Jr. said of that time period.

Trump Jr. said he gained more responsibility in 2016 when his father became president and he was named a trustee of his father's revocable trust. He said that he, Weisselberg and his brother Eric Trump became a kind of triumvirate running the Trump Organization.

"We stopped reporting to my father on decisions involving the business," Trump Jr. said.

That relationship broke down once Weisselberg got himself into "legal issues," Trump Jr. said. He testified that he could not recall the circumstances of Weisselberg's exit, including the multimillion-dollar severance deal that Weisselberg received, which Weisselberg faced questions about during his own testimony earlier this month.

"I have no knowledge of the specifics of how it happened. He is no longer working at the Trump Organization," Trump Jr. said of the former CFO.