Available space inevitably gets used up under normal operating conditions. It’s almost a law of nature, just like Parkinson’s Law (work expands to fill the available time). Opportunistic bulk discount purchases, overstocking, old stock or just inefficiency eats up costly space. Suddenly you cannot add new lines that consumers are demanding. Your stock represents too much capital. Business is constrained by your warehouse capacity but expanding to an additional facility may not be feasible at this point. The only option is to increase storage space by better utilisation of what you have available. Where do you start?