The consumption of natural resources for building infrastructure has significantly increased due to persistent population growth and limited urban and commercial spaces. Cement mortar has been the primary construction material throughout the years. The use of natural aggregates, which normally account for two-thirds of the entire volume of concrete and are primarily utilised in the construction of residential and transportation infrastructures, has led to substantial ecological changes and environmental problems. In the recent few years, the over-exploitation and extraction of natural resources have necessitated the identification of alternative materials to natural raw materials essential for the production of cement composites. One viable alternative is employing industrial wastes as cement and sand substitutes. In the present study, the different properties such as physical and mechanical properties of cement mortar consisting of plastic waste, blast furnace slag, and micro-silica at various percentages were studied. The design of Experiment of different mix proportions was prepared and compared with the control mix. A statistical correlation was derived. The laboratory results showed that the incorporation of additives improved the performance of cement mortar mixes and reduced the cost of construction. The results suggest that the additives upto a certain percentage can be efficiently utilized in the production of sustainable end products.