I bought a new house in Holland (regio Nijmegen).

No, no !
With warming climate, you will have feet (36 m) in water in 2050-2100... [:((]
Go to Maastricht (56 m), it's higher. [:)]

For security, the good height is 120 m...
Oh my god, myself, I'm too low (43 m)... [:(]
I run to buy a boat [:))]