Most California construction attorneys know, or should know, that you need to “prove” you’re a licensed contractor in a construction case.
And, by “prove,” that means more than simply alleging in a pleading that you are a licensed contractor (that’s an allegation not proof) and it also means more than simply signing a declaration or testifying in court that you are a licensed contractor (while that is proof, it’s insufficient proof under the law).
What you need is a verified certificate of licensure issued by the California Contractor State License Board (“CSLB”). And if you don’t have one during trial, you’re out of luck, . . . until now.