Just like most of the things he says, they are in no way based in reality. He just says stuff that will get poor, uneducated people all riled up and on his side, but in reality, there is no way he can actually do what he says.
Let's say just for the sake of argument that everyone is actually ok with giving away their homes, farms, businesses and livelihoods, and that he can actually figure out who should get the land, most property is in fact not paid off, and the titles are held by the banks. Who will pay the banks all the money owed? They paid the money out and are counting on the repayments, and what about all the people and funds that are invested in bonds? The banks would go under and the stock market would crumble.
Then considering that he thinks land is free, who would pay rates and taxes on the land? Surely not the people he says he will give it to, he already says they don't need to pay for it, that's a big chunk of revenue cut off from the municipality, who now won't be able to provide water, electricity, sewerage services, refuse removal, etc...