What is the minimal order (building size) steelvilla will supply?

We sure that we can supply any size, but considering the shipping cost, the installation cost and other costs, we suggest the minimal size is from 150 square meter (1614.59square feet) and can be smaller size but with many units. If the order is too small, the production cost is high and the materials waste is much, without classification store, there is more space taken, the shipping cost will be higher.