How long does it take for a change of lease holder to kick in after the passing?

My father just recently passed and apparently my older sister was left with everything. This could have just been word of mouth. And I personally don’t think a will was created in this time. I’m doing my best to obtain the death certificate so I can then receive a will if it was made. But from my understanding the Will has to be sent and made through the city they resided in. If he did hospice in Miami does that make him a resident if he passes away in just a few days of being down there? Would his residency still technically be here in Georgia? Because I’m just curious where would I find this will, Florida where he passed or Georgia where he technically resides. He didn’t change residency, and I’m not sure how long it would take to become a resident in Florida.