Verifying last 2 years of rental history very important!

If you want to keep them, make sure they are 100% honest about their intent, check zoning to verify they are allowed in that area, charge them market rate, and confirm they are insured to protect you and the property. 

If you are doing a conventional loan your income would be verified by tax returns, pay stubs, and W-2 forms.

You have to take information you independently verify and determine what your risk is from that information.

Documentary tax stamp deed to the Clerk of Court [ I verified this as correct for our area]J.

IE; If you are looking at a P/L for last August, but annual property taxes are due November, you are not getting a good "monthly" snapshot.If this is due diligence, you will also want to verify the data being placed into revenue and expense.

Just ask for two previous addresses and check to verify.

There are so many lost opportunities relying on assumptions that aren't accurate and easily verified.

I would use a service such as vacationrentaldesk.com for this.A direct booking is no more risky than a booking through VRBO or Airbnb; they aren’t verifying identity, either.In fact, my own company has taken thousands of reservations over 19 years, and we don’t verify identity.  

It is career ending.Take the time to learn the law, know how to verify ownership and reduce the trouble you will encounter along the way.