Lyric discussion by Phanoutboy 

Cover art for House of Gold lyrics by Twenty One Pilots

Although most people take "and when your father turns to stone" as the father dying, I take it as something different. I think the father is abusive to the mother. I think the father "turning to stone" is him being abusive. Stones and rocks are used as symbols of toughness and lack of emotion."Will you buy me a house of gold" could be her wishing for her son to give her a better life. "And when your father turns to stone, will you take care of me" could be translated to And when your father (beats/hurts me) will you take care of me. The mothers House of Gold is a place where her and her son could be away from their abusive husband/father. Just a theory of mine

My Interpretation

@Phanoutboy oh and "I'll cure you of disease" could mean I'll cure you of his abuse