the individual (whether that individual acts alone or with other individuals) has made arrangements to sell the old dwelling and acquire another dwelling (the ‘second dwelling’); and
bod yr unigolyn (pa un a yw’r unigolyn hwnnw’n gweithredu ar ei ben ei hun neu gydag unigolion eraill) wedi gwneud trefniadau i werthu’r hen annedd a chaffael annedd arall (yr ‘ail annedd’), a