Gwnaed penderfyniad yn 2017 y gallai Cadw aros o fewn Llywodraeth Cymru fel Asiantaeth Fewnol ond gyda mwy o ryddid gweithredol a masnachol a fyddai'n ei alluogi i weithredu'n fwy effeithiol ac effeithlon wrth gyflawni ei ystod eang o rolau a chyfrifoldebau.
A decision was made in 2017 for Cadw to remain within Welsh Government as an internal agency but with increased operational and commercial freedoms that would enable it to function more effectively and efficiently in delivering its wide range of roles and responsibilities.