My house is from the 1920s, with a poured concrete foundation and floor in the basement. The floor dips pretty noticeably downward from the foundation walls towards a drain near one end of the basement. I don't think there's been any significant settling, I think this is just how it was constructed, to direct any sort of spill or leak towards the drain.
That's all well and good, except that my office is in the basement. My desk chair likes to roll away on its own, and I need shims to keep shelves and my desk from tipping over. I'm considering building some sort of a subfloor under just this part of my basement to level it. I don't think that options like How can I level my basement floor, which has a 4-inch dip? are really in my budget, or really what I want to get into.
I'm basically thinking of building something with 2x4s and plywood that I can shim up enough to be level. Is that the right approach? I'm hoping to be able to get away with only spending about $200 on this. I'm only looking to level about a 12'x12' section of my basement, not the whole thing.
Dampness isn't generally a problem in my basement, my main goal is to make my work area level.