and i guess you can BRRRR your way to a turnkey - just depends what stage you buy it at, right?

Everyone that replys will just be guessing so go with your gut. 

If you provide a scope of what you are demo-ing, you may have better luck with someone's experience to comment here, but costs can vary regionally, so a local contractor would give you the best actual estimate. 

Once the title is clear of those pesky old liens, you'll be good to go.This is not legal advice, so speak with your attorney for actual procedural issues.Keep investing and moving forward!

I guess i would like to have clear goals on what to aim for when i save money and understand who i can reach out for such things.

The water heater blows up a week after closing guess who pays?

The neighbor is now giving my tenant a hard time by saying that his property actually extends into the driveway of the property that I own. 

I guess they haven't figured out their exit strategy? 

I understand the importance of a lease, but I think the actual risk of this happening is quite low.

Here is what is bad: only about 1% of properties actually end up in the hands of the lienholder. 99% redeem the property at some point.