Board Thread:Wiki Discussion/@comment-24335865-20150906212132/@comment-26818419-20150908094625

The glass depot is unlocked during the questline One Track Mind, at part two. My guess is that to get that quest, you have to complete the Rail Against The Machine quest to get the next one, as One Track Mind is for Act three and each act has its own set of questlines.

I wouldn't know what your layout is, unless you send a screenshot or friend request. If you are buying houses, (the idea is to get their income from multiple houses rather than just one house), then don't go overboard. Too many houses can get in the way.