I see that this has already been discussed a little here. Would I be correct in saying that no such community exists at present, or at least that no such community is making itself publicly known?
It seems to me that it would make a lot of sense for people following this type of diet and wishing to shift towards a healthier lifestyle to start thinking about networking in order to buy up some organic farmland where it would be possible to establish an intentional farming community. In my experience the majority of current intentional communities are not following anything resembling a Paleo or WAPF diet.
In what I am envisioning, everyone entering the community would put in a certain amount of funds for startup, and then either already be running a business which would be viable if moved to a rural setting, or have a business plan for a farming/food artisan enterprise or other land based venture. This way there would be ultimate personal responsibility for one's share in the value of the land; if one's enterprise fails one always has the option of selling one's share.
The correct ratio of food producers : others would need to be decided on. There would then be a community funding pot to which everyone contributes a certain amount and which would be used for building communal structures/infastructure such as a central hub space, market/commercial space, kids' play space etc, and funding communal activities.
All that is then needed for this to gel together is some sort of constitution defining the desires of those who set up the community, regarding what they want and don't want to happen, upon which full consensus should be reached, and a procedure for council (general communication, making decisions, resolving disputes) such as talking stick circle. A co-operative legal structure is probably a good idea. How each 'household' would go about establishing itself, either in pre-existing structures or by building something new is something that is very particular to to the group of people and piece of land so I haven't given a template for how that might happen.
My main intention though is to start a discussion; I am new to this community and generally the online Paleo community, meanwhile have some knowledge and experience of farming. As I am in Europe and English-speaking I would consider Scotland, as it offers opportunities for clean water, land that has not been subjected to industrial agriculture, and woodland. But if any of what I have written here has been of interest to you do speak up, and similarly if you know of any other places on the net where you think it might be worth my while to post this, please let me know.
Someone to look up to get an idea for what my idea of farming is would be Sepp Holzer. There are some good videos floating around.