I edited my original post because of what Bill pointed out. For some reason, I was still thinking "in the box" about my last project, but a lot of the time, you will have to cut boards in half, like Bill was mentioning, so you should have adequate space on either side. Sorry, I wasn't thinking. :slap:
Joe also brought up a good point. If you are doing trim work, it is a HUGE help to have room on both sides of the saw. It's not always necessary. In some instances, you can cut things upside down and backwards and get the same cut (assuming your saw tilts and rotates in both directions), but if I'm running a substantial amount of trim and/or crown, I want tons of space on both sides and usually cut outside. If I'm running crown, I usually use 16' boards, and lets say I'm doing a small bathroom. I might need to cut a 3' piece off of a 16' board, or an 8' piece for the long wall, etc.
My shop is in a small, 1 car garage. One thing I've taken advantage of is a difference in height or dimensions of different work stations. Let me give you two examples from both ways that I've had my shop setup.
In this example, my saw/stand is out far enough from the wall that the lathe (to the left) will not get in the way. On that side, I had about 8 feet of clearance. On the right side, the stand is clearly taller than the compressor and if I opened the garage door (to the right of the compressor), I'm only limited by the weight of the board hanging over the side support making it uncomfortable to cut.
For my last project, I NEEDED 10'6" on both sides, so I did this.
I moved my MS station to the opposing long wall. I measured 10'6" from the wall inside the doorway (that the ladder is resting against). Then, to the left, my MS stand is higher than the table saw and table saw outfeed table, and if need be, I could open the garage door and have unlimited space on that side. For this particular project, I needed to drill holes every foot on a ten foot board. So I put my drill press on the miter saw stand and rigged up this contraption.
I just wanted to point out that you can also take advantage of a difference in height or dimensions of your other workstations.