Autoclaved aerated concrete blocks are an exceptionally advanced, lightweight green building material that are superior to traditional building materials like clay, stone, and brick. Birla Aerocon is the top producer of these blocks in India. Lime, cement, fly ash, and an aeration agent are the main ingredients. Birla Aerocon 4 inch AAC blocks stand out due to its exceptional attributes, such as insulation and lightweight and available at reasonable price in KPR Buildware, Thanjavur. With no waste, it is made from recycled materials. Due to its lower density than clay bricks, it can be laid much more quickly and easily, reducing construction expenses. Superior heat resistance and non-combustibility characterize it. It readily yields to cutting, sawing, drilling, chiseling, and shaping tools. Rodents, termites, bugs, or fungi cannot enter because there are no cavities built.