This is a very broad question but to give a general answer, the reason why they exist is to finance properties that won't fit the typical bank credit box.

I just came from the bank to open a bank account for the newly formed LLC that will hold the property I am purchasing.

IF you cannot get a copy of the lease, then she would need to show a bank statement from when she made it and prove it was that amount.What document do you have that shows she gave $850?

Also, you need a bank account. 

The national office market is showing signs of stabilization as major corporate tenants like Bank of America, Fannie Mae, Bain Capital, and Verizon commit to large lease renewals.

Hi all,I’m Josh, a real estate investor (land banking) who started my journey in a small town in Oklahoma and moved to Mexico in 2012.

Also, there was a state law passed in FL handcuffing jurisdictions from regulating minimum rental periodshttps://www.avalara.com/mylodg...They did allow jurisdictions with existing rules to keep them but they cannot modify or add to them. 

Just be prepared to provide documentation, such as leases or bank statements, to verify the rental income.

@Josh H.i think it's possible, but you might have to call a whole bunch of lenders, and try both banks and DSCR lenders.  

Bank, private, own funds.