There exists an experience of building tiny subsistence farms or villas in Russia called "dachas". After Gorbachev-Yeltsin reforms, many Russians were left with no income or with very little income insufficient to support themselves. To avoid mutiny, the goverment gave away pieces of agricultural land, about 0.2 acres each, to all those who wanted to build a small house there and cultivate the land using the methods of subsistence farming. It used to be that "dachas" were owned by the few chosen ones and mostly were not used for farming. Now everyone could build his or her tiny (or not so tiny, depending on the income) villa. This quickly became fashionable among elderly folks who could not own any real estate under the communists and tens of millions of people got into the project.
The results of 20 years of building and running these dachas are summarized in a good article in Russian:
http://www.kolokolmagazine.com/Kaganski ... revolyucii
Here are the main points of the article.
1) Dachas have been built around big and medium-sized cities everywhere in Russia except for high Arctic and high mountains. Dachas, their roads and communications have occupied a total of 300 thousand square kilometers of land in Russia. Every large city is now surrounded by a 10-15 kilometer wide "ring" of dachas, except Moscow, which is surrounded by a 50km - wide ring.
2) The accumulated countrywide dacha-related construction and land development cost between 1985 and 2003 exceeds a staggering 1 trillion dollars (Russia's annual GDP is about half that amount). The total economic output of dachas is estimated at 50 million dollars annually.
3) The produce grown by dachas was found not cleaner or more organic than the produce grown by professional farmers who use machinery and pesticides. At the same time, dachas caused a significant environment degradation: pollution of land and water, destruction of animal and plant habitats. Any big land development project or creation of sanctuaries near big Russian cities is now extremely complicated if not impossible. Dachas often look ugly and unesthetical and they almost completely blocked the access to the wild nature for the residents of big Russian cities.
4) The "subsistance" farming practiced in dachas is heavily based on mass-produced goods as well as goverment-subsidized utilities and goverment-subsidized commuter buses and trains that run between the cities and dachas.