I refereed to rent controls in the sense that the american OP said are causing price increases in SF (afaik this is simply limiting rent increases for existing contracts, which is the default in Germany).
All of Germany is under rent control in that context, and IMO it works compared to exploding rents in the US and other countries (UK, Israel, most places really aside from some of continental Europe).
That's because most contracts specify that
increasing the rent follows the standard
procedure: Over three years, rent can rise
by up to 20% (15% in Berlin), if the comparable
rents in the area have risen as well (which is
influenced by market rate). Ultimately, this
limits the pace at which rents rise, but not
the extent.
This is a form of rent control almost nobody in the rest of the world outside of continental europe enjoys - prices generally rise as quick for current tenants as they do for everyone there: your landlord can tell you tomorrow than the next time your contract is up to renewal (usually yearly), the price will be 2x the current one and if you don't like that you have to leave.
All of Germany is under rent control in that context, and IMO it works compared to exploding rents in the US and other countries (UK, Israel, most places really aside from some of continental Europe).
This is a form of rent control almost nobody in the rest of the world outside of continental europe enjoys - prices generally rise as quick for current tenants as they do for everyone there: your landlord can tell you tomorrow than the next time your contract is up to renewal (usually yearly), the price will be 2x the current one and if you don't like that you have to leave.