Albeit, its earlier failures, the HDB was never looked back, indeed took a brave initiative to attempt the IBS again in 1973 and 1979 in view of the need for accomplishing the 100,000 dwelling units in the Fifth Building Programme target (1981-1985). As a result of continuous effort, the HDB has made a remarkable achievement in the adoption of IBS for the construction of the public housing program. Also,through its ongoing comprehensive program and industry collaboration, the IBS able to gain substantial market in the construction industry in recent years