Precise details about "hdb customer stamp obligation one hundred forty 28" just isn't publicly offered, since the figures probably signify an address or interior reference selection rather then an ordinary identifier. Customer's Stamp Obligation (BSD) is actually a tax levied on all home buys in Singapore, together with HDB flats. https://hdb-buyer-stamp-duty-14064196.onesmablog.com/hdb-buyer-stamp-duty-140-28-78026947