 This study investigates the mechanical and durability properties of low-carbon concrete reinforced with waste-printed circuit board, WPCB, fibres towards a sustainable built environment. The evaluation was done by analyzing 11 discrete concrete mixes with WPCB fibres at different weight percentages, and the results indicate that incorporating WPCB fibre improves the mechanical strength of concrete. The properties of WPCB fibre reinforced concrete were validated through response surface methodology, RSM, which demonstrated a high level of accuracy in predicting the mechanical properties of WPCB fibre concrete with a p-value below 0.5. This article was authored by M. Vishnuprion, R. Anadurai, Kennedy C. Arnulo, and others.