Or if you don't want to commit to building a pier or platform, could you moor a houseboat there?
It's worth noting that flooding isn't an all or nothing thing. I live on the New England coast and my neighborhood occasionally floods during storms. This is a disaster for some houses, but only a temporary inconvenience for others which are build on a tall foundation and have a raised area for parking.
Will you still own it?
Will you be able to build some sort of platform above sea level with a house on it given that the submerged land was once yours?
Will it eventually give rise to a "living on the sea" movement?