Use of machinery and machine extensively in the construction industry could increase construction productivity in terms of time, energy and costs and thereby to reduce dependence on foreign labour. Construction Industry Development Board has drawn up a strategic plan of using the Industrialised Building System (IBS) in both government and private sector to promote construction practices in the use of machinery and machine optimally. Therefore, this study was aimed to investigate the differences in the use of machinery and engines for conventional construction methods and IBS. The instrument consists of interview and focus group protocols. The findings found that there are two types of machines that were frequently used in the construction which included mobile cranes and backhoe, where IBS used modular components such as walls, floors, beams and columns. Modular components are heavy and large size which required the use of machinery and this could reduce the use of foreign labour. Using IBS, the completion of construction projects was within half or a third of the time of conventional construction period. This allows the contractor to add new construction projects and thiscould increase construction productivity.