Housing sales is expected to plunge 21 percent annually across nine major cities during the October-December quarter to 1.08 lakh units, according to a report by PropEquity on December 21.As per the data, the total sales of residential properties across the nine cities are likely to decline to 1,08,261 units in the current quarter as against 1,37,225 units in the same period last year.Samir Jasuja,...