This study was conducted at the Pampanga State Agricultural University to develop amd evaluate the performance of the medium density fiberboard using coconut shell, coir and peanut husk. It aimed to produce a substitute component in fabrication of furniture, door boards, cabinets, decorations and in constructions. The following treatments that were used in the study were 20:50:30 (68.8 g coconut shell, 172 g coco coir, 103.2 g peanut husk) for treatment 1, 10:40:50 (34.4 g coconut shell, 437.6 g coco coir, 172 g peanut husk) for treatment 2 and 33.33:33.33:33.33 (113.52 g - goconut shell, 113.52 g coco coir, 113.52 g peanut husk) for treatment 3 with the same " amount of binder of 875.64 g cassava starch and 500.36 g of water. The study was conducted to determine the performance of medium density fiberboard in terms of; physical (water absorption, fire resistance, nailing, sawing) and mechanical properties (deflection, flexural strength); and determine the production cost of the fiberboard. The water absorption of T3 had the least amount of water absorbed with a mean of 90.67 g while T; and Tz had the highest absorption rate with a means of 101.3 g and 99 g. The result also found that all treatments was not significant with each other. For the results in fire resistance, T; had the widest area burned having a mean area of 422.48 cm? while T3 had the shortest area burned having a mean area of 199.86 cm? followed by T2 with 261.34 cm*. The result also shows that all treatments was highly significant with each other. Tn terms of sawing and nailing properties T; had the highest satisfaction rating of 82.93%. While T3 had the shortest average satisfaction rating of 75.2% followed by T2 with 69.6% satisfaction rating. With regards to the flexural strength of T; was the strongest among the treatments having a mean load of 10.39 Mpa compared to T2 and T3 having a mean load of 8.70 Mpa and 7.44 Mpa respectively. The result also found that they were highly significant with each other.