Actually not really needed: a nation-wide open relocation plan "all living in too dense areas, flood hit areas too many times, buildings at risk of landslides, submersion and so on can give their own property to the State in exchange of a to-be-built new one. Those interested have at their charge find a suitable ground to built, the part the State will pay is a similar size of the old one, the rest is at Citizen charge, the exchange will happen once the new home is built, residing there is mandatory for 5 years or a significant amount of the benefit need to be given back to the State, the State will ensure urbanization (meaning roads, electricity, water services etc of sufficient grade)".
Such "bonus" can ONLY be get from private owner for their old/new main home, and only very few can take it at first because EU job market, specially toady is not as fluid as the USA one, find a new job is not at all that easy and quick, specially if it's not a "desperate level" one, so essentially at first only remote workers with not much big family ties and early retired could accept it. Only some of them will do, people fear the change. Meaning only a small cohort of citizen can get the bonus the first year. Not too much to provoke market disruption as many "eco-bonus" already provoked here (for instance Italian 110%, meaning the State cover the 110% of costs to improve a building for 2 energy class or the French "Isolation à 1 euro" witch lead to an incredible amount of crappy insulation with a gazillion of problems led to significant costs for many who originally spent just 1€ to "better insulate" a new home. However this said cohort is still not too small to not count at all. After them successfully settled others will be convinced and another batch of people will took the bonus. After them it's time for many to look for a new "market" outside the city, instead of 10 restaurants in 1km in the city center there will be some moving outside to serve spread populations, and that another batch. Since building homes here is far from simple like in the USA, it took MONTHS just to buy the terrain and get a project approved, the speed at a certain point will increase but not too much, meaning a decade at least of steady economic growth led by the real estate.
Such "bonus" can ONLY be get from private owner for their old/new main home, and only very few can take it at first because EU job market, specially toady is not as fluid as the USA one, find a new job is not at all that easy and quick, specially if it's not a "desperate level" one, so essentially at first only remote workers with not much big family ties and early retired could accept it. Only some of them will do, people fear the change. Meaning only a small cohort of citizen can get the bonus the first year. Not too much to provoke market disruption as many "eco-bonus" already provoked here (for instance Italian 110%, meaning the State cover the 110% of costs to improve a building for 2 energy class or the French "Isolation à 1 euro" witch lead to an incredible amount of crappy insulation with a gazillion of problems led to significant costs for many who originally spent just 1€ to "better insulate" a new home. However this said cohort is still not too small to not count at all. After them successfully settled others will be convinced and another batch of people will took the bonus. After them it's time for many to look for a new "market" outside the city, instead of 10 restaurants in 1km in the city center there will be some moving outside to serve spread populations, and that another batch. Since building homes here is far from simple like in the USA, it took MONTHS just to buy the terrain and get a project approved, the speed at a certain point will increase but not too much, meaning a decade at least of steady economic growth led by the real estate.