The Repopulation has three locations players can enjoy housing: in NPC cities, player cities, and instanced. To give players an idea of what housing is about, Above and Beyond Technologies has released a video discussing housing options and touring the instanced housing.
The nearly 10-minute tour showcases the housing interface, complete with new structure placement bar, and the actual decorating. Some highlights gleaned from the demonstration include the abilities to lock structures/items in place so they aren't accidentally moved, to scale placed items larger or smaller (as well as a reset button), to rotate items, and to raise and lower items. Get all your decorating tips in the video below.
[Source: Above and Beyond Technologies press release]