An interesting model in Vancouver.  They've raised 30% of their goal so far.  Check it out! And pitch in if you can.

http://solefoodfarms.com/about/
Soul Food has a plan to double Vancouver's local food production.
If you would like to see more beautiful, delicious and healthy food grown right in your neighbourhood, help us set up two new retail locations.
With retail outlets in place, we will create the capacity to significantly expand our farming operations in the next few years - growing into one of, if not the largest, urban farm in North America. That is to say, your one-time cash injection will help Sole Food significantly scale-up the urban farming movement.
But wait, there's more: One of these locations is set in the Downtown Eastside, which will offer “pay-what-you-can” organic produce in order to bridge the gap between those who can afford our food and those who cannot.
In order to do this, we need to raise $100,000. Our start-up costs include renovation, marketing and merchandising materials, inventory, staffing, and cooling and storage infrastructure. If we make our goal we will immediately begin work to open the farm stands for the summer of 2014.