In this case, I believe OP is actually a landlord, who invested in this old decrepit building for rental income. But what do you know, he has plenty of incentiv

In this case, I believe OP is actually a landlord, who invested in this old decrepit building for rental income. But what do you know, he has plenty of incentive to handle this situation as thoroughly as possible, because he lives there too! Moral of the story: "homeowner" and "landlord" are not mutually exclusive.