With every release of Xcode it seems to eat more and more space. I was thrilled to find the XcodeCleaner project from Baye on Github. This is a great project that allows you to tailor the space Xcode uses. I’ve been able to free up an easy 12GB without any issues.
I highly recommend checking out the project on GitHub at XcodeCleaner. You can build the project from source or download from the macOS App Store for $0.99.