RTPI accusations that housebuilders are failing to build on 225,000 new homes worth of land with planning permission have been labelled as "misleading" by the HBF. The RTPI's submission to John Callcutt’s review of housebuilding delivery claims that housebuilders are sitting on 14,000 acres of land with planning permission. RTPI director of policy and research Kelvin MacDonald said: "Housebuilders and …