I've been to both Citizen space and Hat Factory in SF. Hat Factory is too inconvenient for me, and Citizen Space is too expensive ($350/m). You can get a real, private office in a cool space in San Francisco for $400 if you know the right people (artists). Paying money to go to someone's house with a bunch of other people I don't know doesn't appeal to me. It could potentially appeal to me if I lived in Palo Alto and it was really cheap, like $30/m or less. It seems like you'd have to have some additional benefit, because I don't see the advantage over simply going to work at a friend's house, which is free. Maybe it would appeal to people with no friends? If you're trying to make some extra money you might be better off just renting out the garage. If you are trying to meet more nerds, hosting a "super happy dev house" type event once a month might have the same effect. You could make money with that idea too, by charging $5 at the door for beer.