Whats the process?

Can anyone share how they went about setting up a home birth from the beginning? Is it only done by private companies? Can you see an OB until its time to deliver? I have read that its only for low risk pregnancies which makes sense but has anyone had Gestational diabetes (technically high risk) and still allowed to home birth?

I have had GD two out of my 3 pregnancies so im almost certain i will have it again if i get pregnant. However, all 3 of my deliveries were uncomplicated vaginal births and my biggest baby was 8lbs 1oz at term. I realize that deliveries can be unpredictable sometimes but i feel confident that i could do a home birth if i have another child but im just not sure how i can go about it. Can anyone share their experience?