Parents assets
If you are talking about when they enter a nursing home and applying for medicade, the spouse that stays home can have a car, house, and 78k in assets. If there is no surviving spouse at home then it drops to 2k and a burial plan or $1,700., or so. In Ca. the time frame is 2 years. That said, are you trying to avoid paying for your parents care, if you are be very careful as you could go to jail by hiding assets so you can get the money.
Get an elder care person to advise you from your home state, as the laws vary from state to state.
Wishing your parents and long and healthy life, Bucksp