listing on advertised websites, for example estate agent websites, Rightmove and Zoopla, or evidence of other ways in which the property is being marketed
hysbyseb ar wefannau, er enghraifft gwefannau asiantiaid eiddo, Rightmove a Zoopla, neu dystiolaeth o ffyrdd eraill y mae'r eiddo yn cael ei farchnata