A wireless sensor network (WSN) consists of autonomous nodes with sensors to sense and collect the status of the surrounding environment continuously. Characteristics of WSN are infrastructure-less, self-organizing, and fault tolerance. One of the applications of WSN is living and sleeping pattern reorganization in the home environment. Where the sink node is equipped with a sufficient amount of processing and battery capabilities, but sensor nodes are outfitted with the restricted battery as well as processing capabilities. The sensed information is transmitted to the sink node in a single or multi-hop communication manner. The energy depletion of any sensor node directly affects the sensing coverage and thereby on the network performance. Particularly the sensor node that is neighbour to the sink node faces the extra overload and drops the information due to insufficient buffer. Moreover, the neighbour of sink node exhaust soon due to the energy depletion. Thus the placing the sink node in a suitable position in WSN is a quite vital design issue, as the performance of the WSN is greatly affected by the proper placement of the sink node. The paper designs an efficient mechanism for deploying the sink node to a suitable position. The deployment is based on the sensor node’s residual buffer and energy status. The performance of the proposed mechanism is evaluated by a network simulator and compared the results with recent existing mechanisms in an identical environment. The performance results indicate that the proposed work enhances the network lifetime and energy efficiency in WSN. Finally, it prevents packet drops in WSN by avoiding the nodes becoming the bottleneck.