I have different view on farm house constructions. Even though we look for cheapest options in farm house, we may need to consider, farm house is situated in a farm/open field and there is a always threat of high wind, rain, insects, moisture and dust formation. If we only look for storing purpose then the scenario may change. Request a sustainable, cheaper and easy to clean farm house options.
I would prefer flooring with KOTA stones, wall single bricks, and roof either manglore tiles, or fiber sheets or if available local material like coconut leafs, grass or palm leafs. these would be more close to nature and warm atmosphere always round the season in side.
As I am the initiator of this thread and thinking all the pros and cons of the farm house methodology suggested in the farm, I would like to go for traditional farm house construction with bricks and cement and have started it already. The roof I am planning to do with the painted steel sheet to low the heat.
The foundation is 3 feet, starts with irregular shaped stones and then Stone bricks (Gannate) till 3-4 feet and then normal mud bricks.
I have availed a service of fire proof steels for for my farmhouse. They have good quality of fire resistant doors and what’s the best about it is it’s cheap price. You might want to visit them http://www.scanline.com.au/