Sales of new housing units went up by nearly 60 per cent in eight cities, including Mumbai, Delhi NCR and Bengaluru in the three months between July and September 2021 as compared to the same period in the previous year, according to a recently released report. However, the overall year-on-year (y-o-y) jump in calendar 2021 was 13 per cent compared to 2020, says a report released by Prop Tiger, a real estate advisory firm, in February.