your workshop

When setting up workbenches, the height should be set at about hip-pocket level.

But, also, consider the height of your table saw. If the bench and the saw are the same height, you can use the bench for extra support when sawing oversized materials.

If you are setting up a new workshop in an empty space you will be able to design it to accommodate the equipment you allready have. You should be able to have a very effiecent work space.

If you are moving into a ready made area with workbenches and shelving. Look at your tools and equipment, how are they going to fit?

Measure the space , wall to wall, corner to corner, (this will give you an idea if the room is square, for later changes) mark the existing plugs,lights, and the wiring lay out if you can. measure all of the shop equipment you have, height,width, ect.
You will need all these measurments, to best utilize your work space, even if you have a large shop it will get filled up too fast.
There are some real good ideas for storing the tools you are not using.