She's not being flexible and will not sign an extension.

I am currently doing extensive research on each avenue as I have an owner financed deal that I am trying to close sometime next quarter.  

For instance, what is the current rate and payment on the mortgage, and what will the new rate and payment be?

There are all sorts of precautions you'll want to educate yourself on before borrowing.A very general good rule of thumb: don't use other peoples' money to try to do something you haven't already done yourself many times before, and don't use other peoples' money on speculative activities.If you're planning to borrow money from a private party, AND also getting financing from a bank (for instance, borrowing money from a family member to pay the downpayment on a new mortgage), you'll need to talk with an experienced mortgage broker about it beforehand--because if you borrow money from a family member, the bank will usually count that debt against your DTI, which affects how much mortgage you can get.Good luck out there!

While I agree 100% that taxes, insurance and other upkeep are expensive, if I rented I'd be paying a landlord a sufficient rent to more then cover these amounts in nearly every instance, plus his mortgage principal amortization.Since, personally, I prefer a home that is nicer then most rentals and like the idea that the home is mine to do as I please, I choose to own.As a RE investor, with over a 150 paid off doors, (antithetical to you Joe, I'm aware) I know how to purchase RE at a discount.

I was supposed to close this deal back in March and the lender didn't have everything ready so had to use my 30 day extension in my purchase and sales contract. 

The amount of surgery required just to convert them is pretty extensive, and in most cases for garage conversions like this, we recommend tearing down and rebuilding in the same footprint anyways.

For instance, where I bought is in an unincorporated part of the county, and hotels, motels, and tourist homes are taxed.  

For instance, if I buy them through an LLC, would my personal name not be on any public records showing I own the properties?

You need to be very careful about keeping personal money and LLC money completely separate.I doubt it will matter in this instance.