In The Last Stand: Dead Zone, the Compound is your home base, where structures necessary for your survivors' continued survival are located. These structures are constructed and upgraded at the cost of resources and time, occasionally requiring components as well. Fuel can be spent to construct or upgrade the building instantly, with no cost in resources or components.
The buildings are categorized into 6 kinds, summarized in the Compound article. All structures are relocatable, but they can't be moved if it is performing an action, e.g. building, upgrading & recycling. Only constructable buildings can be dismantled into resources and components. Besides Miscellaneous Buildings and the Rally Flag, all constructable buildings can be upgraded to certain levels, depending on the building in question.
Below are all the structures that can be constructed: