A difficult, but possible scenario would be to betray to qeynos, betray again and build up faction with Neriak. Once you get +10,000 faction with neriak you can enter the city and sell and everything else, but your 'home' or call spell will still be exile.
If you buy a home in Neriak before you start any of the betrayal process you should still be able to keep that home once you live in exile. There are some negative aspects of the game that come with living in exile so you probably want to research something like this carefully.