The guidance will also provide support for individuals that want to sell their properties to local people or who are willing to reduce the price so that their home can continue to be a family home.
Bydd y canllawiau hefyd yn darparu cefnogaeth i unigolion sydd eisiau gwerthu eu heiddo i bobl leol neu sy'n fodlon gostwng y pris fel y gall eu cartref barhau i fod yn gartref teuluol.