Agree substantially with Nir Shelter.
I like stories that pose genuine dilemmas for protagonists.? But I'm not sure that is the case here.? As Nir Shelter said, he seems to have the option? of vacating the premises, move his family out.? End of dramatic problem, end of dilemma, nobody has to die, right?? If the protagonist cannot take that option, there has to be credible reason why and I don't see what it could be.
Yes, moving out means financial disaster, the loss of every penny he's sunk into? the property, and the mortgage he is still obligated to pay off.? I can see where that delays him, but ultimately it comes to a choice between between life? (move out) and death (stay).? It's a no brainer choice, so it's not a true ethical dilemma.