It super easy you sign up to have a quick call and do a quick tutorial with a Rep and you receive a certificate that you give to the Banker/Loan officer.

(Either with the roofing company, a heloc, or a personal loan.)Either way you will probably be way ahead on interest saved unless you have a sub 6% interest rate.

The deal will leave the seller at your sons mercy for decades (the life of the loan).

I financed the deal with a conventional loan and bought down the rate from 7.75 to 6.25.

I flip with cash, not loans, mainly because there are not enough deals out there that meet my highly selective acquisition criteria, so no need to pay interest on cash otherwise sitting in a money market account. 

@Jon Ankenbauer you won't be able to keep the land separate from any future construction loan.

If you are willing to live in urban areas you may want to talk to a local bank in your market and see if they have any incentives or grant loans for certain areas.  

Name detection is via loan signatures.

I have two rental properties through the VA loan being military.

Many Realtors will suggest purchasing a property using a FHA Loan, to reduce your out of pocket money.