I don't understand the negative responses now. Certainly, a sale with a final settlement is the more profitable option. But that also means that the aunt would have to move out. But maybe she doesn't want to. The life annuity is not made for inheritance matters, but for those who own property and want to secure a pension through their property already. The pension is supplemented and can be used if she ever needs care. Or if she has to go to a nursing home, it can also be used there for more exclusivity. It's like an insurance. The buyers are already paying for something they cannot use. Everything is a matter of time. The life annuity will certainly be an alternative to buying for some, which we can't even imagine at our age now. The idea that the cousin/brother of the OP takes over would require that he has the money monthly. Inheritance or not – for the lady, it is probably not such a crazy idea to sweeten her retirement with a life annuity every month.