The research of the mechanical behaviour of reinforced and cavity wall brickwork is the focus of this paper. In this paper, the casting of specimens are done manually and totally 18 specimens are prepared. The different proportions were followed for casting the bricks and specimens. The bricks used are red bricks, fly ash bricks and solid bricks. Conventional method of casting is done using mortar and casting of reinforced brick prism is done with red bricks, fly ash bricks and solid bricks. The cavity wall is constructed and finally the compressive strength is estimated for the reinforced and cavity wall brickworks. The obtained compressive strength for various bricks is plotted in the form of graph to interpret the exact results and comparison is drawn for all types of bricks used.