Burnt clay brick is a predominant construction material used in construction. The CO2 emissions in the brick manufacturing process had been acknowledged as a significant factor to global warming. Therefore, now a- days we should focus more on seeking environmental solutions for greener environment. To fulfil this objective, new construction materials can be used for construction. One such material i.e., AAC blocks can be used as an alternative material for construction. This work highlights the comparative statistical analysis of cost-effectiveness of using AAC blocks instead of traditional red bricks. The usage of AAC blocks gives a prospective solution to construction industry along with environmental preservation. In this work, an attempt has been made to compare AAC blocks as a replacement material to red bricks. This work shows the analysis and comparison between the G+6 and G+2 building with different material in terms of bricks. The bricks which are taken for first building analysis is burnt clay bricks and for second building analysis is AAC blocks. This analysis is done by STAAD-Pro software and in result shows the reduction in overall cost of construction by using AAC blocks.