Interesting idea. For the sake of my own imagination and naïveté, I'll treat this as seriously as I can, with the hope that it actually goes somewhere.
First off, accommodations. Having visited a friend of mine in a commune, I can say that it takes some getting used to, but you do get used to it. On the floor where my buddy was, there were about 5-6 people. This location included two bathrooms, and the communal kitchen (which was a charming disaster).
The bathrooms maintained a cleaning rotation. Every day, someone would clean that bathroom (both bathrooms had their own list), and then they wouldn't have to clean it for another five days or so. This was the system we had at school, and although it's not perfect, you do get used to it. Yes, some people are better at it than others, but if it's taken on a day-to-day maintenance it really doesn't need all that much each time. And when the people who are good enough to actually clean the damn place come around, they have less muck to sort through than if the cleanings were less frequent. Like I said, it's not perfect, but it's not bad.
The kitchen, however, was pretty much a war zone. I don't know how else you'd handle this than to again assign a cleaning rotation. You would of course need more than one person each time to cover the whole place, but it could be managed.
Some form of management would be required... Someone with the place of mind and the authority to badger people into honoring their spot on the cleaning rotations, and to handle the various rent collections and payments. Figuring out who does this is always a tricky matter, and under certain circumstances it can lead to a certain degree of animosity.
As for gathering money, there is one supplemental form of income that could come about from your normal duties. First of all, having a personal gaming server would be all but necessary for any geek commune worth its salt... Opening up spots for either subscribers or just asking for donations from the public can potentially grant a certain amount of revenue. But it's not much, and quite possibly may not even cover the cost of the server.
The big thing, however, would be to simply publicize the whole affair. Yes, yes, I know how much you all love having your greasy faces broadcast to the world at large... But think about it. Recording the day-to-day madness of a full-blooded geek commune would generate a sizable amount of interest, and if you go public with the idea beforehand I'm sure someone will cover the story of these modern-day techhippies whyoo decided to band together and create the most bizarre and neurotic collection of fools the world has yet realized.
Mythbusters gets huge ratings because they blow stuff up (well, that and the chick), and people always like looking into the lives of other people and seeing how they live. Due to the naturally high tech, far-fetched, imaginative, and downright chaotic nature of geek groups, you'd be generating plenty of oddball happenings that viewers would eat up. Whether this is a small-time internet phenomenon or a big-whoop TV show, it doesn't really matter. Popularity and advertisements are a time-honored recipe for cash flow of some sort. Again, I wouldn't rely on this as you primary funding, but it's always nice to have a helping hand. And if, against all odds, it happens to take off, you might be given a greater range of freedom as far as other monetary sources are concerned.
Think about it... It would be a combination of bombs, medieval warfare, and scaring people as they come out of bathrooms. There's not a show alive that would beat that.
While a rural or semirural area might be nice for greater freedom as far as mayhem is concerned, I think it might come with a few too many issues to be fully worth it. Urban situations could go either way, but might end up being a little cramped. Weigh this against the greater ease of accessibility. Suburban environs could provide a small yard for those outdoorsy catastrophes, but should still have decent access to utilities such as net connection and electricity (and no geek commune would be complete without a couple mostly-useless homemade solar panels anyways). I really can't help with this part.
But yeah, this shows promise. It of course depends entirely on who all decides to hop on for the ride, but I happen to think that there's real possibility in this.