You most likely will not get owner occupied benefits from your bank though on the loan.

Once your construction loan starts, most banks will not extend any more credit once construction has started.  2.

No bank loan.

I purchased a SFH as an investment property -  I’m reading here  there some CUs and banks who will allow a 80% heloc (in order to get cash for another investment ) .

This sounds like a thoughtful plan, but there are a few things to keep in mind.First, while you won’t be on the mortgage, you'll still be co-owner, meaning if things go south (like he defaults), the bank could come after the property, which affects your investment.

It means mass failures of regional banking because that's who holds majority of this commercial financing and what are they going to do with a property nobody will buy, or due to such change of numbers can only offer 30 cents on the dollar, where does the other 70 cents come from?

I've used other programs for it in the past, but I like that Baselane is both a banking and bookkeeping platform built specifically for real estate investors.

Many lenders, both traditional banks and private/hard money lenders, like to see experience of at least several completed flips before lending. 

It really just comes down to each bank and what they are willing to do for you. 

With just a quick estimation Jon K's bookkeeping is under what I would estimate with only the info he gave me, seeing a bank statement and asking more questions would give me a better idea.