But maybe there is a room for negotiation when you can propose to put 60k HELOC money out of your sales processed into an escrow accoun during settlement.

The Hud-1 is a proof of settlement.

They should have agreed to provide copies of all agreements affecting the property which would survive the settlement date. 

Then it clicked since there were no prorations factored in or settlement statement.    

It may help you get a settlement, but even if not, it can be a way for other investors in the area to be aware to avoid this contractor. 

I'm up to date on all bills as of the settlement date.

On the personal finances, buying my first BRRRR side of things:  My wife and I are within 10 days of closing on a refi of our house in order to wipe out the divorce legal and settlement debt I racked up on second mortgage and credit cards back in 2014 and cut $800-1000 out of our monthly obligations. 

I'll be splitting the building/land using the public record county tax ratios, but I'm not sure about the initial total to use.Possible options are:Property value shown in the public record (same place that has land/building split visible)Amount shown on the appraisal that my lender orderedAmount of money I put into it all (effectively sale price plus all the fees I ended up paying)Amount shown at the bottom line of my settlement statementWhich of those is correct?

I understand that your part of the settlement must have been remote, with you not present due to travel. 

@Laura Sullivan Unpaid water/sewer is a lien in every jurisdiction we cover and likely in yours so this issue really should have been raised prior to settlement... and if a balance was owed it should have been addressed.