Just for comparison, I am curious to know the prevailing A-I-O loan interest-rates for a typical borrower with 720+ credit score and respectable LTV.. ?

However, I confirmed with my attorney that I can also borrow from the partnership LOC if needed.

I knew someone who bought a house with a bf who couldn't qualify to be on the loan as a borrower.

So while I can't claim to speak for every financial institution out there, it's a very broad survey, finding an option not contained there might involve making quite a few phone calls.When I see 30 year fixed, 30 year amortization, 30 year maturity (basically, identical terms to a consumer-friendly kid-gloves home loan), which does in fact pop up if I specifically search for it, it's almost always at a rather high interest rate, and the borrower doesn't opt for it.

I would also shop with a local mortgage broker as currently United Wholesale Mortgage is running a 125 bps special on Government refinances through the end of September meaning if you did go FHA streamline then you should be getting a rate of around 5% (borrower paid)4) If you havent asked, at 700K+ loan tell your lender you want to go Borrower Paid and you expect them to only charge a 1% origination charge fee.

Given the higher cost of capital in countries like the US or Canada, you can get a higher return by investing 100% int cash in Mexico than with borrowed money in the US.

Thanks everyone for the input, i spoke to my money manager yesterday, she mentions a Secured Bank Loan as a line of credit borrowed against my investments with them. 

I have reached out the borrower/company to talk about the situation at hand.

The reason being is they can quote you a low rate (too good to be true usually) and then half way through the process or even worst at closing the rate is subject to what it is that day and then they excuse themselves because the borrower never asked for a rate lock or were never aware of what a rate lock is.If you have any more questions I am happy to help.

Most lenders will not allow a subordinate lender without some skin in the game (at least 10% down from the borrower).