I am one of 4 girls and have been the main hlep for my father who is my mother's carer. We moved into a house together 7 years ago and my siblings have not helped. One was estranged from them for around 5 years. One day my father thought I said no to him to looking after my mother while he went to the football (I look after her Sat arvo while he plays bowls) He screamed at me then 10 days later he threatened to kill me. My siblings are gathering around them and taking me to court to get the house off me which we bought together and I have been paying all outgoings inc mortgage, gas, water and even foxtel for them. They have all turned on me and have broken up the family even more by not allowing my mother's family to visit her. They have threatened restraining orders on them. They even lodged violent retraining orders on my children from their grandfather. They are accusing me of fraud and theft although none of them have been around for years or cared.
I totally agree that as long as you stay in the home, you have a better chance. If both of your names are on the house, then you both own it. Worse case scenario, you will have to sell the house and spilt the proceeds. Your parents can find a housing like ALF. Or maybe move in with one of your sibling?
Have proof ready to show you have been paying the bills. Checks receipts etc anything you can lay your hands on.
Aside from that it is not unusual for an elder to turn against their offspring care give especially if the elder has some form of dementia undiagnosed or not.
Has your mother's condition begun to deteriorate? Part of it could be his fear and anger at the prospect of loosing her. You are the one there, you are supposed to fix everything so you bear the brunt of his assults.
Does anyone have POA for Mom aside from dad?
This sounds like another case of follow the money. Why else would they want the house?
Do not under any circumstances move out. if your father becomes physically violent towards you do not hesitate to call the police.
Others have been through this and it is not pleasant. but if you have good friend to support you and go with you to see lawyers etc it will greatly help your self confidence. Blessings