Major companies and prominent individuals are donating to fund President Donald Trump’s proposed 90,000-square-foot ballroom, according to the White House.

Contributors include Apple, Amazon, Lockheed Martin, Microsoft, Google, Coinbase, Comcast, Meta, the Winklevoss twins, Commerce Secretary Howard Lutnick and his family, and the Adelson family.

Trump has emphasized that the project is privately funded and will not cost taxpayers.

He stated Wednesday that the ballroom’s cost is “about $300 million,” up from a previously cited $200 million, CNN has reported.

Miriam Adelson, a longtime Republican donor, previously received the Presidential Medal of Freedom from Trump in 2018.