<p>For catering increasing demand of sustainable high-rise building, new structural systems are evolved for resisting lateral loads efficiently. Widely used structural systems for tall building are moment resisting frame with shear wall, framed tube, outriggers-belt frame. Separate buildings are connected at different levels to form a conjoined structural system. Due to increased stiffness for controlling lateral displacements, conjoined structures have attracted the attention of structural engineers. Position of link structure connecting separate buildings plays an important role in behaviour of the conjoined building. An attempt is made in this paper to identify the optimum position of the link structure by considering 60 storey conjoined building. Five different locations of link structure are considered in this study. Modeling and analysis of separate and conjoined building with different position of link structure are carried out in ETABS. Reinforced concrete and steel–concrete composite structural elements of buildings are designed as per relevant Indian standards. It is observed that conjoined building with link structure at 0.6 time height of building gives minimum top storey displacement. Further, to assess the advantage of placing the link structure at the optimal location in a conjoined building, a comparative study is carried out, considering separate building, conjoined building with link structure positioned at the top, and conjoined building with link structure located at the optimum position. From the study, it is found that placement of link structure at optimum position reduces the lateral load response as well as structural quantity of materials required for construction.</p>