Indulge my fantasy - What would it take to own this building?

[Black]

Unless the top post was edited, I don't see that matt has given enough info for a meaningful reply, and definitely not enough to spur the discussion about security deposits above. And I'm either too tired or too thick to understand the connection between the security deposit/friend story and buying a building.
But what lafinfil said is a good answer to some question, quite possibly matt's.