The present study aimed to investigate the feasibility of recycled soil for manufacturing burnt clay bricks by replacement of natural soil (NS). Recycled soil (RS) is the by-product generated during the processing of construction and demolition waste. The physicochemical properties of raw clay soil and recycled soil were examined using various laboratory procedures such as chemical analysis, index properties of soil, compaction etc. Six different NS+RS mixtures (0, 10, 20, 30, 40 and 50% by weight) were combined with clay soil. In this study, fly ash and lime were utilized to improve the performance of the mix as well as the firmness and density of the combined material. Bricks were cast in three separate groups. (1) NA+RS free of additives (2) NA+RS with 10% fly ash; (3) NA+RS with 5% fly ash and 5% lime. After casting and drying, controlled and uncontrolled methods were chosen for the burning of bricks. Further, the laboratory evaluation of bricks was done by performing compressive strength, water absorption, efflorescence, and thermal conductivity tests. Results of uncontrolled temperatures burnt bricks showed a maximum 20% replacement of NS having 4.23Mpa compressive strength. While controlled burning allows for 4.09 Mpa compressive strength with 40% soil replacement and 17.13% water absorption. Thus, using RS in clay brick construction is an efficient way to create a porous and lighter brick that meets structural and environmental standards.