Look for Jacob in the Home Base and take him to ride a car with you. You need to go to the marker located down south. Here you will meet Jacob's friend who is about to turn, do your part and take care of him. In other words, finish him.
Afterwards, follow the next marker and make sure you get out of your ride when you reach it to complete this mission.
Now you will have the option to move your homebase since it is getting crowded and you are running out of resources in your current area. Your very best option is the Snyder Trucking Warehouse in southwestern Marshall. It has 8 outposts and is an extremely huge area. This homebase requires 12 people and 50 materials to move.