It seems a lot of the new SWADE content has Bases as a feature with various upgrades etc.

This extension unlocks the Bases button on any SWADE campaign. Then you can create bases for players and add whatever upgrades etc. as required. If you are using an setting with this already unlocked then do not use this extension - examples: Pinebox Middleschool, Horror Companion (SWADE), Super Powers Companion (SWADE), Fantasy Companion (SWADE)