In Manhattan, even the biggest names in real estate are scrambling. To scale back debt, Harry Macklowe, a fixture in the business since the 1960s, is revamping his condo conversion of 1 Wall Street, a New York landmark. Macklowe is well aware of risk since he lost the General Motors Building to creditors during the financial crisis.

Time is money, and developers need more. They include Gary Barnett, known for building One57, one of the tallest operational residential skyscrapers in the city. Barnett’s Extell Development had to negotiate with lenders for time to find additional funding for Central Park Tower, a $3 billion skyscraper on West 57th Street that will house the city’s first Nordstrom store.

Some projects appear to be moving forward. Last week, developer Ziel Feldman, a former partner of Barnett, closed on a $1.25 billion loan to start building two towers beside the High Line, the park built atop an unused railroad track in Manhattan’s Chelsea neighborhood.

The financing came together two years after Feldman’s HFZ Capital paid $870 million for the site that occupies a full block. It was one of the most expensive development sites ever sold in the city. 

At the time of the acquisition, Feldman said that the project would be ready in 2018. Now, the plan is for 2019. In an interview earlier this month, Feldman said the shift in timing is immaterial and unrelated to the slowing real estate market.

“Of course the pace has slowed down, because the pace was frenzied,” he said. “Well-priced, well-executed buildings” are selling units briskly.

Like Trump, Ceruzzi—the developer with the vacant lot on Fifth Avenue—got his start outside Manhattan. He built shopping centers and apartment buildings in suburban New York and Connecticut before setting his sights on the big city.

In 2015, Ceruzzi teamed up with China’s SMI USA to purchase the plot at 520 Fifth Ave. for about $275 million, almost double the price paid for the property in 2011. They shelled out roughly $50 million more for additional air rights. At the time, Ceruzzi envisioned a 71-story glass skyscraper with retail, a hotel and apartments.

In November of that year, Ceruzzi told the Commercial Observer, a publication that covers the city’s real estate industry, that construction would start in the spring of 2016. On a recent weekday, there were no workers at the site two blocks from Grand Central Station. Ceruzzi didn’t respond to requests for comment.

Even if Trump enacts policy changes that benefit real estate developers, it will take time to translate into improvements in the property market, according to Robert Knakal, chairman of New York investment sales at Cushman & Wakefield.