@William Coet, as Jackson noted, there are too many variables to even begin.Two things to remember, any tax losses you utilize to offset incomes, will reduce basis making bigger tax bill in sale year.  

Take a look at BP's blog where new articles are published every day: https://www.biggerpockets.com/blog4.

I have a lot and i have one that pops up everyday LOL.Goodluck to you and your future real estate investing endeavors!

If we built a spreadsheet of the overall responses from the Mafia and how many were veiled attempts at business, I would bet it is close to 80 percent.I know I am not the only one annoyed every day, so please post your thoughts here so BiggerPockets can review them.I do know someone who bought multiple properties with a former Mafia member and the properties are still performing so this isn't a referenda on how good the agents are.

I understand there are change orders that happen and that can be handled on a per instance basis.

Paying anyone on a transaction basis requires that person receiving the compensation be licensed. 

Depreciable basis will be purchase price + renovations

Anyway like many people I look at my investments from a cash on cash/ rate of return/IRR/ ROI basis and IMO having a bunch of dead equity in a property is a lost opportunity.  

I think you could split after sale for a non-taxable event, the total basis transferred in would be split across the two "new" properties.Calling @Dave Foster to give his insights here, lots going on in this one.

I have saved many fall out deals from reputable lenders that I use on a day to day basis, It's just the client is not very familiar with the lender's process/ guidelines and/or the rep was being very unethical (bait and switch.. etc..).