How do you buy condemned homes?

Question : How do you buy condemned homes?

I'm not interested in the courthouse auctions of foreclosed homes, i dont have that kind of cash/credit for mortgages. A buddy told me that some condemned homes simply dont go up on the auction block because they are too cheap. an example is, i live in pennsylvania, near lancaster city, supposedly theres condemned row homes that are listed for 3k(buy price, not auction) these are the types of houses that you gotta sleep in as you remodel because its in a bad area, yet you will have no problem selling it for about 30k when its finished, rehab is supposedly about 10-15k if totally stripped and condemed (which they usually are).