Finding a house key in a dream indicates that some problematic events will be encountered, your world will change suddenly and you will become a very different person, you will have dark and mournful days, you will achieve the things you have been dreaming of for a long time in a very short time, the efficiency in your sustenance and earnings will never decrease, your health will get better day by day, a new path will be taken.
Also, seeing a house key in a dream indicates that you will do your work more enthusiastically because you have established friendships, you will look after the rights of the poor and orphans and spend the earnings you receive in the way of God, the dreamer's wishes, the way for trade will be opened, you will feel sad, your economic conditions will improve.
Psychologically finding a house key in a dream indicates that famine will occur, you will receive large orders, you will feel better than your previous situation, a period that will pass in abundance and prosperity. It indicates that you will enter a difficult situation, that you will have to make up for your losses by carrying out great works, that you will achieve what you have been dreaming of for a long time, that you will be a person followed and respected by everyone, and that bad-intentioned people will be defeated.