[quote=faterikcartman]Has anyone built acting as their own GC?[/quote]

Not an option right now if you need a loan. Most construction loans have dried up. The few lenders remaining are only writing owner-occupied, and only with a licensed GC you have already selected for the project. They’ll want references for the GC, will check his background, complaints against him, etc. before approving.

Of course, if you don’t need a loan, then you can do whatever you want. You just have to pass inspection.