Recently, a novel hybrid structure has been developed as an alternative lateral-load resisting system at The University of British Columbia. The hybrid structure includes Cross Laminated Timber (CLT) shear panels as an infill in steel moment-resisting frames (SMRFs). To increase the suitability of the suggested system, first in this paper types of hybridization for timber-steel structures are discussed. In the second step, an iterative design method is expanded and formulated for a hybrid timber-steel structure. The iterative design procedure comprises the following primary modeling variables: the gap between CLT panel and steel frame, bracket spacing, panel thickness and strength, and post-yield stiffness ratio. Later, the design displacement profile is developed by allocating primary relative strength between the CLT wall and frame component. This profile is then applied to acquire the distinctive of an equivalent single degree of freedom (SDOF) system. A mathematical term for the system ductility is formulated based on the proportions of the overturning moment resistance of the CLT wall and SMRF. A determined equivalent viscous damping-ductility relationship is applied to get the energy dissipation of the equivalent SDOF system. In the third study, A new reiterative direct displacement-based design method SMRFs with CLT-infill walls has been expanded and analytically confirmed by designing 3-, 6-, and 9-story hybrid buildings primary shear proportions between the wall and frame are allocated at the start of the design process. The system ductility and equivalent viscous damping are clearly accounted.