Housing prices have risen in 18 major cities, including Delhi and Mumbai, by up to 9.6 per cent during the October-December period 2012 compared with the previous quarter, according to National Housing Bank (NHB).Mumbai and Delhi witnessed the maximum increase in housing prices at 9.6 per cent each. Of the 20 cities tracked by NHB ‘RESIDEX’, prices have dropped in only two cities — Faridabad and Indore. “In the majority of cities prices are witnessing an upward trend,” NHB said in a statement. “The movement...