You could also run a “quick title” search for $50 with a local title company to make sure there are no outstanding liens on the property.

If the current year water will is not paid within the year, nearing the end of the year(around late Oct/early Nov) the water works "rolls" the outstanding water bill into the current years taxes. 

Here is how I look at it from an interest rate perspective: If your interest rate is:Less than 4% - make the minimum payments and keep the debt outstanding. 

It is possible there’s an outstanding bill that they need your money for.

Our current mortgage is $1,151/month, with an outstanding principal balance of $116,536.

@Dakota Ferguson   Starting price doesn't matter as much as the ending price which will typically be at minimum the outstanding loan balance and potentially more than that.   

Outstanding! 

Instead of them collecting the loan payment for x more years you offer to pay them a lump sum at say 80% of outstanding balance.

I assume I would have to satisfy the outstanding tax, and the 4 judgements from GDOR and the county. 

There are many strategies to "Seller Finance" a property with an out standing mortgage Wayne.