I don't have the space that a lot of you guys have. No yard, and a 2 bedroom apartment. I get the 2nd bedroom for all my junk, basically. So I really can't have more than 2 bikes at a time. Right now we have 3, counting my girlfriend's bike. But that lives in the living room, usually.
In answer to the question, just one. That 70's Atala I posted about a few days back. I just ordered some parts for it, so I should be working on it next week, or maybe this weekend if all goes well.