When I was a firefighter, it used to annoy me when we would close a road because of a fire, accident, or other emergency, and people would be angry that “this is the only way to get to my house.” I would point out that I could think of four different ways to get around the closed road, but the idiots only knew one way.
Part of being prepared for anything is to know the area where you live. Know it on foot, know it in a vehicle, and if possible, know it from the air. That means doing a thorough recon of the area. That starts with knowing everything about the area within 500 yards of your door. You can use a range card, found here on the training materials page, or you can simply do a sketch. Make sure that it includes the range and bearing of landmarks like the treeline behind your house, that large elm tree down the road a bit, and other things that you can use to estimate range using the Mark I eyeball.
I know that the treeline behind my house is 98 yards away. The treeline in front of the house is 85 yards away. The house behind mine is 403 yards from my back door. I have all sorts of landmarks on my card, and that will allow me to guess the range to various things within 500 yards or so of my house.
Now that you know the physical layout, make sure you know your neighbors and identify potential allies as well as potential rats or informants. As always, practice OPSEC and remember that the person asking you to do illegal shit or showing an interest in what you have is probably an informant or a thief.