While I certainly understand how you wish to avoid legal fees, it may be best to get help on a consultation basis only - use as you wish and to find out what you need to do - to comply with the law.  Tennessee does not allow uncontested divorces if you won a business or property with their spouse or there are retirement benefits to split.  So you will need help here.  You can ask about preparing a new deed after the divorce papers are signed leaving you both with "rights of survivorship" in the house.  Good luck.