How can the damaging effects of a real estate bubble be avoided?

The euro zone today is characterised by: A highly expansionary fiscal policy; The monetisation of public debt; And therefore, thanks to negative real interest rates and the abundance of liquidity, the prospect of a sharp rise in real estate prices. A rise in real estate prices increases wealth inequality and reduces the wealth of young people who want to buy housing. The choice of a highly expansionary fiscal policy and fiscal deficit monetisation was unavoidable; but how can it be prevented from leading to a real estate bubble? There have been suggestions to tax real estate capital gains and use the proceeds to help home buyers. But it is well known that such a policy of stimulating demand for housing reinforces the rise in real estate prices; It is more likely that the right policy is to stimulate construction, i.e. housing supply (regulatory changes, freeing up land), so that the investment of liquidity drives up the volume of construction and not housing prices .