You've bought a bunker. Go to the construction foreman:
"Me and my, uh, "friends" would like to upgrade our base."
"Ok, well that'll cost you (TBD by devs or whoever)."
"Too steep for me right now (exit)."
"Here's your money."
"Ok, take this workman and show him the base."
You get there.
"This is it."
"This? I]m not sure it's worth the money."
"Just get to work and shut the fuck up."
A 'few days' later, you have a nice new bunker front. Three fruit trees, a barley garden, fiber plants, Brahmin but no butcher table, a tent with a workbench, a wall and a gate that actually only opens for authorized members of the faction. With sharp pointing things outside.