Whether you're challenging the valuation of your home or investment property, understanding the appeal process and gathering supporting evidence can make a significant difference.

If you told him you have been playing pickup games for the past year and need help improving your jump shot, now he has evidence you're motivated and a specific goal he can quickly help you work towards.

That's evident in the number of "private" email messages that I've received regarding this very thread.And I'm also not interested in how I'm coming across to anyone here - it's your friend here who is here for the favor.  

But, if you have clear evidence that fraud was committed, you may have legal action against GP, but this is typically hard to prove, and likely going to be costly for you to pursue, and if the deal is already failing, there likely isn't much of anything left to collect anyways.

What will happen when you ask for evidence of his liability and workers' comp insurance?

Generally there would be evidence of the little critters.

I would say one of the things you want from the borrower would be the note on the first and evidence that payments are made each month.

So you'll have to show that you've made the payments on time for 12 full months (cancelled checks or bank statements to evidence debits on your bank statement to show payment).The 12 months of payment documentation will be required from the underwriter as a condition almost guaranteed 99.999%.Keep in mind what I am talking about here is if you pay an underlying mortgage that you're not obligated on and after the 12 month of payment you are "no longer," subject to the 50% LTV restriction with conventional financing.

the property for business or rental purposes....Here's the irrefutable evidence, however, for future passers-by....See:  https://www.law.cornell.edu/cfr/text/26/1.121-1CFR § 1.121-1 Exclusion of gain from sale or exchange of a principal residence. 

Can you please provide us with evidence of rent payments?