Fel rhan o'r broses o gyflwyno'r cynllun yng Nghaerdydd, rhoddwyd blaenoriaeth i eiddo a ystyriwyd yn uchel ym Mynegai Amddifadedd Lluosog Cymru 2019 (MALlC). Wrth benderfynu pwy oedd yn gymwys, cafodd pob safle ei fapio yn erbyn ei sgôr amddifadedd cyffredinol a hefyd yn erbyn nifer o fynegeion ar wahân, gan gynnwys Incwm, Cyflogaeth, Iechyd, Mynediad at Wasanaethau, Gwasanaethau Cymunedol, yr Amgylchedd Ffisegol a Thai.
As part of the Cardiff roll-out, properties considered high in the Welsh Index of Multiple Deprivation 2019 (WIMD) were given priority. In deciding who was eligible for the roll-out, each site was mapped against its overall deprivation rating and also against several separate indices, including Income, Employment, Health, Access to Services, Community Services, Physical Environment and Housing.