Rhwng 9 Mawrth a 1 Mehefin 2022,bu Llywodraeth Cymru yn ymgynghori ar gynnig i wneud is-ddeddfwriaeth a fyddai'n egluro'r amgylchiadau pan ddylid trin dwy neu ragor o unedau o eiddo fel un o fewn y system ardrethi annomestig, mewn pryd ar gyfer dechrau rhestr ardrethu 2023.
Between 9 March and 1 June 2022,the Welsh Government consulted on a proposal to make secondary legislation which would clarify the circumstances in which two or more units of property should be treated as one within the non-domestic rates system, in time for the start of the 2023 rating list.