u/BoomShackles

I am looking to buy my neighbors house but she wants to remain living there. We are thinking of doing a no-rent situation but I would cover those losses via reducing the purchasing price. That's where the advice is needed, what's the best way to calculate that? I've ran a bunch of number with net present value, predicted losses in rental fees and what not but I feel like I'm missing the mark. Or, perhaps, is this just a bad idea and should I follow a regular rent formula? The neighbor is 75 and rather frail; I'm trying to avoid the situation where she either passes or moves to assisted living and then I'm left with the mortgage of a higher purchase price. Does that make sense? In either scenario, new renters would come after her.