Pre-Qualification...

Depending on your borrowing qualifications, lending institutions make land purchase loans.  

What qualifications do you want your tenants to meet?

Maybe you can include a print out with information where you keep your rental sign up so that interested renters can read more about the restrictions and qualifications before calling you.I like Bettina F.'

How long does pre-qualification last for?

I got the 28% number when using a pre-qualification worksheet to organize my data.

And if the buyer doesn't use your broker to get the loan, call the buyer's mortgage broker to chat with them to make sure they are familiar with any flip rules that might be applicable and ask about the buyer's qualifications and what are the broker's biggest concerns about getting the loan done.

@Derek Hammond- From a Private Portfolio Lending perspective, and specific to Rental Loan qualifications, we use a DSCR (debt service coverage ratio) of 1:1-meaning, we do NOT qualify Income. 

@Steve Vaughan  another SV brilliant post.. that's why I don't pay cash for my cars anymore I used to .. with 2% or less money out there.. and I am going to drive them one way or the other.Same with airplane.. less than 5% money fixed for 20 years and UBER write offs.. no sense paying cash for those.. this is why you have a private aviation and jet industry to begin with.. and heavy equipment for that matter.. you can buy a multi million dollar plane with 5 to 10% down and fixed for 20 years .. with moderate qualifications..

Financial qualifications of the tenant determine how much of the rent Sect 8 will actually pay.