Dwelling

From Bleach Wiki

Also called a house, a dwelling is where you can sleep, put your gold into the coffers, chat with friends and so on.

You can give out a limited number of keys to other players to share your coffers with them and offer them a place to stay.

Dwellings are accessed in the "Residential Quarter" of every country. You can buy or build dwellings there.

To buy or build a Cityhouse, you must have 7 Final Tests (Shinigami).

To buy or build a castle you must have 50 Final Tests (Taicho). Note that castles can only be built or bought in special places.