A workshop has all the facilities for making various things. It includes tools, workbenches, supplies, and so forth. The Gamemaster may rule certain projects require a dedicated workshop of their own (which is an additional feature). For example, a workshop can easily handle woodworking, metalworking, and machining, but might not be suitable for creating magical inventions (see Inventing), which require a separate dedicated workshop.
D20 Hero SRD Installations Article- http://www.d20herosrd.com/7-gadgets-gear/installations