S. Bengi, good questions. I have been informed by a Tiny House group person that the county I am looking at does not allow houses under 600 square feet. I assume other counties have similar rules. However, I know there is different law relating to farm workers that we might be able to use, considering that I'm looking at a worker-owned cooperative permaculture space. Alternatively, we can find a way to work with 600 square feet.
As to lot size, my experience in my permaculture studies showed that individual lots of about 1/4 acre were much more productive per square foot than huge expanses of acreage, which makes sense because it's much easier to get to the area right around your house, and you see it every day. Therefore, I'm looking at individual spaces of that size, possibly less, with edges around the property being given over to Zones 5 and up.
As to type of farming, I'm looking at 50% or more subsistence crops (i.e. for personal use), and the rest location-appropriate "market gardening" in order to pay property taxes and other incidental costs of the land and cooperative.
Apparently, according to the one person who has given excellent input so far, I did not define restrictions enough in my ic.org posting. There's a reason for that, since I'm waiting for interested people to give input on possible restrictions. However, it's possible that the majority opinion would create a space that I'm not comfortable in. That's fine. I don't mind doing a certain amount of coordinating and not ending up as part of the finished product. On the other hand, perhaps if I were more specific I would attract more interest. I doubt it! I just need to find the right forum to promote my ideas.
Input will be appreciated! Thanks in advance.