Verify that who applied is actually who is on the lease, as opposed to one person applying to avoid the background check on the person in the household with terrible credit, evictions, or felonies.

Plus thumbtack is totally free and they verify contractors insurance and business information

It may help you get the property in escrow where using another agent will make it more expensive.You can always write the offer with an escalation clause to verify the other offers.

That being said, if you decide to proceed I recommend the following:  (1) get 5 references & call them, (2) get their work information - call and verify employment, (3) request 60 days of bank statements and pay stubs - the bank statements will give you a lot of information about their cash flow. 

I still have one left.. but not sure how realistic it is for anyone who is not a very established business person with perfect credit and very high taxable income, or substantial verifiable assets like you have. 

Verify they transfer utilities into their own name - call each utility to make sure it is done instead of taking their word for it.

That being said there is no new law(s) that are restricting business owners who can verify income a loan. 

Verify, Verify, Verify. 

Verify the information.  

I’m just saying verify those numbers.