Loss from one Generation to the next, rather than "Sell"
Aka "Grandfather, why is the basement of your house flooded?"
"It's not the basement, my dear, it's what had been the ground floor of the house. I remember the good old days when we used to watch television down there. Eat meals down there."
"Ew, in the water?!"
"It wasn't flooded back then."
"Why doesn't mommy live in a house with a flooded floor?"
Do as what Venice did? Turn the ground floors into 'flooded basements'. Or something.