Given the lack of budget, in many regions systematization did not constitute an effective plan, good or bad, for development. Instead, it constituted a barrier against organic regional growth. New buildings had to be at least two storeys high, so peasants could not build small houses. Yards were restricted to 250 square metres (2,700 sq. ft.) and private agricultural plots were banned from within the villages. Despite a perceived impact of such a scheme on subsistence agriculture, after 1981 villages were required to be agriculturally self-sufficient.