Oh for god's sake where do these people get their ideas from. My brother is moving into dads place next week rent free, it wouldn't occur to him to pay rent after all he will be buying the place when he can afford it after having installed a new bathroom suite and kitting the place out with new fitted wardrobes for the SIL's shoe collection etc. The fact that he doesn't own it yet has not registered with him, I am expected to just sit back and patiently wait, which I will of course because I am a complete walkover.
Just take heart
@MaNaAk that you will soon be free of these money grasping family members and you have nothing to feel guilty about because you did your best for your dad and that is what counts. Their behaviour just shows them for the selfish people they are. I get quite cross about this and I know I am being walked over by my brother and the SIL but I will be rid of them soon and it can't come quick enough for me.
I think Bod means that you should charge them for having looked after your dads place all this time, after all they have done nothing, they just left it all to you.
Perhaps the flat over the shop will serve as a temporary stop gap until you find something permanent and it is possible that property prices may fall next year if the covid thing is still around which could put you in a better position to buy. It may not be as bad as it all appears hopefully.
I know it is had but try to stay positive.