Questions about BRRRR strategy and 6 month seasoning

[Jessica Freesia]

Hi all, 

I understand why you can't get traditional financing on a house that is in disrepair.  But let's say I use hard money to buy and rehab a property, with the intention of refinancing with traditional financing after a tenant is in place.  Is there a 6 month or 12 month seasoning requirement for this?  And if so, why?  To the bank I am refinancing with, I've just showed up with a property in excellent condition, so I am not sure why I would have to wait 6 months or 12 months to refi.  What am I missing?  

Thanks