Sales of residential real estate properties have picked up in the wake of the forthcoming festive season, in turn giving a leg-up to the Nifty Realty Index, which scaled a new 52-week high on Thursday during the intraday trade. Nifty Realty Index was trading at 477.10, up 22.25 points or 4.96 % at 12:19 pm. The benchmark index, Nifty 50, was up 215.85 points or 1.23% and was trading at 17,762.50 points at the same time.