Noisebridge is a bit more like 1500, from my conversation with Rubin.
It sounds like they have a pretty sweet setup- they have a ground floor with a bathroom and small kitchen, and a walled-off room for noise dirty stuff (with a drill press in it, and some other slightly nastier toys).
The second floor is mezzanine style with sliding rice-paper walls. There are two rooms and some closet space.
It doesn't sound like a 100% fit for us to me, because I think we need a little more "dirty" shop space than that would provide. It's pretty much an apartment that's been repurposed.