Bank Loans on New Fourplex with No Rental History

[Ann Best]

I am fairly new to real estate investing though I've had one rental property for 15 years. I have an opportunity to convert a 5300 sq ft office building into a fourplex with a manager's suite in the basement. As a BRRRR, I understand lenders want 6-12 months rental history to refinance. If I decide to flip the property, would a potential buyer have difficulty because there is no rental history? Would selling it after renovations be a realistic scenario? Thanks for any input!