There are important things to regulate to make housing affordable, and as others said rent control is not really one of them. What needs to be controlled is where information asymmetry exists.
Eg. quality control, you can't post-inspect a house easily, much less a high-rise. Also usually with new real estate development there's always some fraud-ish scheming going on. Not just with the safety, but regular consumer protection shouldn't be left to the courts, because that leads to a lot of wasted energy. (So anything from the hardcore crimes of developers taking the money and disappearing to developers missing the completion date and not compensating the buyers, because "sue me", and the obvious after handover warranty.)
Rent control is almost completely orthogonal to the whole problem. If lending becomes impossible people will just become owners and they will pay to banks. The problem is that it costs sooo much to build new units. (Because idiotic density limits.)
Eg. quality control, you can't post-inspect a house easily, much less a high-rise. Also usually with new real estate development there's always some fraud-ish scheming going on. Not just with the safety, but regular consumer protection shouldn't be left to the courts, because that leads to a lot of wasted energy. (So anything from the hardcore crimes of developers taking the money and disappearing to developers missing the completion date and not compensating the buyers, because "sue me", and the obvious after handover warranty.)
Rent control is almost completely orthogonal to the whole problem. If lending becomes impossible people will just become owners and they will pay to banks. The problem is that it costs sooo much to build new units. (Because idiotic density limits.)