That way you are applying the same process to everyone, which avoids problems later.  

When you convert a rental to personal, how do avoid taxes from the gain and depreciation recapture?

Ideally, once the rehab and construction is complete, it automatically converts to a perm loan (thereby avoid the need to refinance the property). 

Just avoid the whole issue.

That's not my approach, personally--I'd rather just negotiate a great seller financing loan for as long as possible, and avoid the headache and hassle of refinancing for as long as possible. 

I want to avoid the break up and she moves out and he stays and can't really afford the apartment? 

Government intervention: we are avoiding states that are aggressively going after landlords

The down side is dealing with your brother, which I would avoid for your sanity. 

EDUCATE YOURSELF - yes, it will take time, but will lead to a selection that better meets your expectations & avoids potentially costly surprises!

Avoid bidding wars altogether by avoiding listed properties.