just thinking..wouldn't you limit type of buyers in the future for flood prone properties?
you can do whatever to raise the dwelling to the sky, but you can't change the document in the council archives... And for some fussy buyers like me, I perform desktop diligence and if it's on or close to flood prone, I walk without 2nd look at the dwelling.
Most people don't do much diligence when buying a house. Put it up for auction in a hot market in 5 years time and the floods will be a distant memory