I have found that drawing everything to scale on grid paper is most helpful. That is what I am doing in preparation for my new shop. I will, however need to share that space from time to time with my wife’s hobby (hatching and raising chickens). Just a few in the spring till they get big enough to go outside. I am planning on a 26″ x 40″ building with infloor hydronic heat. Others have mentioned that you can’t have too much light, and I intend to use the 200 watt cfl’s to accomplish this, along with task lighting at each machine. Walls and ceiling will be painted white to reflect as much of that light as I can. I want to use the same type of floor treatment that Marc has used in his new shop. Marc, is it really expensive to do that? Or if a guy has never done that would it be better to hire out that job? Lumber storage I have not decided yet. I am fortunate that I am able to fell trees on our farm and have them cut up so I can stack and dry them. We have white oak, red oak, maple, cherry and pine. Although drying/storage will be in another building will still have to tote my boards around some.
A receptacle or circuit that is overloaded is a hazard, in particular one fused beyond its limits. Power tools, especially heavy-duty saws, require lots of amperage, and you may need to add a circuit or two to serve the increased demand in your workshop space. Some tools require 220-volt service, so you may want to install a special plug and line to power that high-powered table saw.
As the comic George Carlin might say, a shop is mostly just “a place to put your stuff.” The physical aspect of a shop is indeed simply a space of some kind — a garage, a barn, a teepee — that keeps the rain, rust, and robbers away and houses a collection of implements needed to saw, plane, slice, sand, and pound raw wood into useful objects. But just like the difference between a house and a home, what transforms a building full of tools into a comfortable workshop goes beyond the mere physical aspect.