Build another shop buck?
Ideally I would add on an additional two car to the existing two car, but sadly the funds are just not there. That does not change the fact there will be an immediate need for additional parts storage at a more modest price. The answer for me is going to be one of those portable sheds where they are built on skids, just drop it in place and you are god to go.
I found one local to me that is frame built, everything on the ground end is CCA the rest is stick built, 16" centers and tin skin. I can and will pay a bit more to have it fitted with a garage type rollup door. Shed size is 12' x 21' with 6' walls. Roughly $3,500 plus tax I am sure. I am no carpenter and will need this thing in maybe 3-4 months so I think it is about as good as I am going to find for the money. They will let you buy it on time too, finance anywhere from 3-6 years at less than $100 a month which is what I need. Remember, three kids, one a senior college bound next year, a boy 16 and a girl 14 years old so I am always stretched a bit thin.
I have actually been in one of these sheds and liked the construction very much. While I am not much of a carpenter I am good enough to know good construction from poor construction.
