What can a General Contractor vs Handyman do in Oakland, CA?

[Matt A.]

I plan to have some remodeling/rehab/renovation work done on a condo I bought in Oakland, California. 

I've heard differing opinions on what parts of this work I can legally have a handyman do vs what parts I'd need a licensed General Contractor (or other type of licensed contractor) to do. Does anyone have an official answer on this? Or is it a grey legal area?

I'm sure the official answer is different for every city, but my question is specific to Oakland, California.