This study investigated the properties of timbercrete blocks made with partial replacements of sawdust for fine aggregate. Sawdust was replaced at rates of 10%, 20%, 30%, 40%, and 50% by weight of fine aggregate. Solid blocks measuring 400mm x 160mm x 190mm were cast and tested for compressive strength and water absorption after 28 days of curing. Results showed the compressive strength started to decrease significantly above a 10% sawdust replacement rate. Water absorption increased with higher sawdust content, reaching up to 8.2% for 50% replacement. In conclusion, a 10% sawdust replacement provided comparable strength to conventional concrete blocks while utilizing an industrial waste material.