Depends on where you buy a house. There are many rural houses and small apartments in tower blocks. And why a suitcase? You probably have a few dozen low-value banknotes lying around at home, stack them together and see they don’t take up much space (high-value banknotes aren’t thicker).
The way I read it, it doesn’t. That’s still a private transaction.
And who buys a house and hands over a suitcase full of cash?
Depends on where you buy a house. There are many rural houses and small apartments in tower blocks. And why a suitcase? You probably have a few dozen low-value banknotes lying around at home, stack them together and see they don’t take up much space (high-value banknotes aren’t thicker).