The expansion of Permitted Development rights which came into force on 1st August 2020, should make it easier for renovators and extenders to build upwards, allowing growing families to expand their homes without having to move. At the moment new Permitted Development rights allowing two-storey upwards extensions to blocks of flats came into force on 1 August. It has been allocated first to purpose-built blocks of flats, before eventually being rolled out to all detached prop