The greenhouse effect provides free lighting and heating, rain water could be caught and stored inside, providing fresh water and a heat sink, capturing heat during the day and giving it out at night, such a minimalistic structure could be constructed in minutes per unit and would provide a high tech low cost Eco abode reducing the necessity for transport, roads, power stations etc. providing self employment & fresh food.
Allotment communities are great, ultra violet protected polythene is good for between 5-10 years and is recyclable(See image above.) Also High tensile steel wires run the length of the poly tunnel which support 2m wide polythene strips in which doors ventilation and anti condensation unitss could be crimped. Further wires run inside which can support large curtains in order to double or treble glaze for warmth, the strips being easy to replace and roll up for ventilation etc.