Would it be possible to have the seller transfer the home into a LLC and then I buy the LLC from him. 

Sell and when you do remember there is a 10% hold by the insurance company until repairs are complete and that’s transferable to a buyer.  

And then can I buy right back into FHA after 1st duplex loan is transferred.Also what is needed for him to transfer his primary to a rental so he can also apply for FHA?

And it could be something international that sparks it.

They will have some of their own internal products that they underwrite.

or is it still possible to transfer the home to an LLC for asset protection with a quit claim?   

I usually don’t even buy an internal ice maker.

Also if you wonder where you fall compared to other coaches “A 2019 survey by the International Coach Federation showed that real estate coaches often charge high fees because of the tangible ROI their clients can achieve.

But whatever you do, don’t transfer ownership to you and/or your sister before his death.

A CPA I knew who was a partner  in one of the largest international accounting firms was aways “straight up” in any advice he gave his clients.