While the overall trend has been bearable for many, rents have risen much faster in some big cities. In Berlin, the average rent for an apartment jumped 40 per cent between 2007 and 2016. In Munich, it rose 21 per cent. Rents have risen so fast that if you are a policeman or a nurse you have no chance of being able to live anywhere near the centre and have to move far out to find a flat.
In June 2015, in an attempt to slow the pace of rent rises, the government introduced a new rule: in areas where the market is judged to be overstretched, landlords cannot ask new tenants to pay more than 10 per cent more than a local benchmark rent.
The problem is that, especially in urban areas, housing supply is just not keeping up with demand. Rather than a further tightening of the rules around rental prices, more incentives are needed to encourage the further building required to tackle rising demand.