Building Violations Revealed

Okay. So here is my update to the 2 vacant properties. I was able to go back to the town to pick up the violation information on the 2 vacant properties. As per the building and legal department, the violation of the first property showed that the home's pool permit expired. Also there was an indirect implication that there was an illegal accessory apartment with report that there were tenants living in the poolhouse with no heat or hot water. The violation on the second home revealed that they had an illegal pool which has since been dug up and filled, plus the home is listed as falling in on itself and, like the first house, it also had an illegal accessory apartment. Either way I was told that if I purchase the properties, the violations fall on me to fix and accessory apartment in the town is only allowed if it's owner occupied and not allowed to convert to a 2 family. Now I have to go to another town to obtain the names of the lienholders. My head is spinning as I am trying to analyze the situation. I see the pros are that both houses are vacant, taxes are paid up, both houses are making someone lose money, and best of all the unfixed violations can act as a bargaining chip. The con's are not knowing whether or not final due diligence will reveal if they are good deals, if I would be able to obtain clean title and if I would be able to puchase 50-70 percent off. I feel like there is so much to consider that my head is spinning.