You cant say because here is paving its going to increase floods, presumably they have acro drains, maybe permeable paving, so that rainwater doesnt drain into the road, Ifield was build on marsh land, friends with new builds in the early 80s had damp and mould. having lived in Pound Hill, Three Bridges, never saw any flooding, we had a detached victorian house, which was actually a council house, shock horror! Theres now a block of flats there, my DD lives there, loves it, but privately renting costs an arm and leg, she wants to move nearer me, much cheaper property (near the sea)and the childcare of course.