The player housing in Ryzom consists of apartments. Every player character can own one single apartment in one of the four capital cities. They are then able to furniture and decorate their apartment and invite other players in. New and unique apartment decorations are often given out as event rewards. Additionally, apartments also serve as extra personal storage space.
Guilds can also buy a sort of apartment for the entire guild: a guild hall. However guild halls only serve as storage space and don't have the additional functionality of apartments; they can't be decorated and players outside the guild cannot be invited in (though all guild members automatically have access).
A player can purchase an apartment by going to a homin apartment caretaker and purchasing it for 1,000,000 . Once purchased, players can enter their apartment through the door behind the homin apartment caretaker where the apartment was purchased, and only that door, so chose wisely the most convenient location before you make the purchase.
Homin apartment caretakers exist only in the four capital cities, so players can only have an apartment in a capital city. Fairhaven, Yrkanis and Zora each have two apartment buildings, with each building having 3 different entrances (and each entrance having it's own homin apartment caretaker). Pyr simply has 6 homin apartment caretakers (each with it's own entrance) scattered all throughout it's southern district.
Each player character can have only one apartment, in only one of the 4 capital cities. The apartment can't be sold back, however you can always buy a new apartment while you already own an apartment. If you do this, your old apartment and everything in it are lost, so make sure to empty your old apartment before buying a new one. The paid for your old apartment won't be refunded either.
Apartments are bound to characters, not accounts. So every character on your account will have it's own apartment (or lack thereof), and characters on the same account can't share an apartment.
Apartments have a personal storage space that only the character who owns the apartment can access. Even if you invite other players into your apartment, they cannot access or even see your apartment inventory space.
The apartment inventory space has a maximum capacity of 1000 bulk, which is as much as 2 packers can hold.
The downside of apartment storage space compared to packers is that the apartment inventory can only be accessed while your character is actually inside the apartment. It's also impossible to craft materials directly out of your apartment storage, unlike packer storage space.
The application for furnishing and decorating your apartment, and inviting other players in, is called RyzHome. It was introduced in Patch 1.10.0 on Monday, October 18th, 2010. It it accessed via the WebApp window, which is brought up with shift-W by default. It also pops up automatically whenever you enter your apartment.