In all the discussion about floods, building and population density, there appears to be a reluctance to encourage planning of houses with three floors and/or useful space in the loft area.
With three floors it is possible to have the ground floor used as a garage, hobby space, guest room, laundry, etc.
It could be made to be resistant to major damage in a flood.
All houses with a pitched roof should, at least, be constructed to make it easy to use the loft space so that the family has a simple and cheap opportunity to expand when it needs to. The present complex trusses almost preclude this! A living space on the first or even top floor is more private, quieter and has a better view.
Going up and down stairs also keeps you fit, but there could be a planned space to install a simple lift if and when required.
Bob Cranmore (M), 1 Lakeside, Brighton Road, Lancing BN15 8LN