The case study is carried out in a timber goods production and trading company. We consider one of the existing warehouse facilities and we attempt to improve its performance. The performance measure is the total picking time, so our objective is to find ways to reduce it as much as it is practically possible and desirable. At the first stage involves the collection of time data, to target the improvement that may be accomplished from the transition from a totally disorderly situation to an organized and controlled warehouse environment. The second stage suggests, implements and studies alternative storage, picking and routing schemes, according to observations made during the first stage. During the third stage, a second series of time measurements is carried out to investigate the achieved benefits.