You may also want to ask when a member must be a guarantor of the loan, if a hard or soft credit inquiry is done, and if the loan reports to personal credit.cheers! 

If I were to approach a seller of a $200k home, and they had a remaining mortgage of $100k, could I get a new bank financed loan for that $100k, and have the seller finance the remaining $100k of equity to me?   

these are construction loans 

I do not have any loans through Flagstar Bank, but I would talk to them prior to moving it into the LLC.

The builders loan couldn't approve us for the amount we need to get, but we had a loan broker find a loan for 10% down DSCR with a 2nd home status instead of investment home.

I read that one of the requirements for getting your second FHA loan is having a change in family size.

In addition to conventional loans and FHA loans, if either you or your wife are veterans, the VA also has a rehab program.I'd be happy to discuss my rehab experience both as an investor and as a mortgage broker, and at least help you think through your options. 

I can only imagine that they got a bunch of big time investors and business loans to grow this out.

The current lender refuses to do a loan assumption. 

yes, you could use the HELOC as a down payment on a hard money loan, and then the hard money loan for the rest.