Refinancing AFTER Owner Financing

[Daly O'Brien]

I have the opportunity to buy a property with owner financing and 20% down.

How quickly after a purchase could I refinance out of that Owner Financing to a traditional mortgage? Is there a set time or rule that banks use? 

I'd like to get my down payment capital back from the purchase and buy a couple smaller properties with that. 

Thank you for the guidance!