Housing sales are estimated to fall 21 per cent annually across nine major cities during October-December period to 1.08 lakh units on high base effect, according to PropEquity. Real estate data analytics firm PropEquity on Saturday released the sale numbers for India's top nine housing markets -- Delhi-NCR , Mumbai, Navi Mumbai, Kolkata, Bengaluru, Pune, Hyderabad, Chennai, Thane. It has estimated sales to rise only in Delhi-NCR. 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. However, sales are likely to rise 5 per cent from 1,03,213 units in the preceding September quarter. Samir Jasuja, CEO & Founder of PropEquity, said the sales have declined on annual basis because of high base effect. He said the sales are likely to rise quarter-on-quarter on the back of festive demand. "A closer look at the numbers reveals that despite th