Latest tender for Bukit Merah HDB housing project indicates average construction cost per unit to be between $144.9k and $179.7k

Lowest bid from Straits Construction = $214,500,000/1480 units = $144,932
Highest bid from Hi-Tek Construction = $266,000,000/1480 units = $179,729

HDB InfoWEB, 13 Nov 2013

Link

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Got link got talk: HDB at bukit merah only cost ~$150k to build - Hardwarezone Forum