No specific plans for taxing the rich in general, but definitely for confiscating the property of landlords. It will be more disastrous for housing quality and availability than rent control. The government will hand out slum dwellings to its favored functionaries, and either let them turn into jungles, or establish brutal feudal control over them.
The city cannot keep heat and hot water in its projects. The only reason electricity there is dependable is it is delivered by Con Ed. Imagine the housing catastrophe if private apartment buildings are confiscated like St. Petersburg and Moscow in 1919. Also those buildings provide real estate tax money. What happens when the eat tax money , not produce it ?