This multi-purpose dome can serve as a storage shed, cool pantry, or as a root cellar. No building permit is typically needed, because it is below the minimum size required by building codes, is not inhabited and is not attached to a residence ( I would still check with your local office).
We have posted about earth bag building before, even earth bag houses, but this simple earth bag dome is by far the quickest and easiest to build. Check out: How To Build An Earthbag Roundhouse