Actually, I don't think that TFG can post bond using the properties. He doesn't own most of them
40 Wall Street - The Hinneburg Family Trust (Germany)
Trump Tower NY - GMAC Commercial Mortgage
Trump International Hotel and Tower - General Electric and Ohio’s Galbreath Company
1290 Avenue of the Americas - he holds a 30% stake
4–8 East 57th Street - Digby Management
He has a few apratments in various units throughout the city, but he actually doesn't own any of the buildings.
1/2
@Animeraider
https://www.newsweek.com/full-list-donald-trumps-properties-letitia-james-about-take-1881265
And there may also be additional "informal" mortgages to entities in Riyadh, Beijing, and Moscow