Concrete is a fundamental building element, especially for constructing high-rise structures, where durability is crucial. Key performance indicators including permeability, corrosion resistance, and compressive strength are used to evaluate the lifespan and endurance of concrete buildings. There are several ways to strengthen these qualities, such as adding more binder, adding less water, choosing the right grades, and reducing porosity. However, the main component of concrete, cement, is quite expensive. Therefore, it becomes essential to investigate affordable alternatives. Because of its benefits, silica fume, or industrial waste microsilica, is becoming more and more of a viable alternative to cement. Microsilica is a by-product of silicon metal and ferrosilicon alloy production. Silicon dioxide comprises the majority of the tiny particles that comprise microsilica. Microsilica has been added to concrete with encouraging results, increasing the material’s workability and strength. In accordance with IS code requirements, this study explores different amounts of microsilica (5–15% of the cement mass) in M30 grade concrete mix compositions. This research attempts to provide useful insights for refining concrete formulations by methodically evaluating the impact of microsilica addition on concrete qualities. The ultimate objective is to increase concrete performance in building projects while maintaining cost-effectiveness, hence supporting strong and sustainable infrastructure development.