Specific specifics of "hdb buyer stamp responsibility a hundred and forty 28" is not publicly obtainable, because the numbers most likely represent an address or interior reference selection rather then a normal identifier. Customer's Stamp Obligation (BSD) is actually a tax levied on all home purchases in Singapore, including HDB https://hdb-buyer-stamp-duty-14021086.onzeblog.com/37252875/hdb-buyer-stamp-duty-140-28