I'm not sure if you want to be a carpenter or a production designer or what state you live in (sometimes there are different chapters depending where you live), so IATSE is the place to get your specific questions answered.
Thursday, June 21, 2012
Getting Jobs in Entertainment question 1199: Is there a Union for the people who are building the sets in Hollywood?
Yes. check out http://www.iatse-intl.org/home.html. "The IATSE is the labor union representing technicians, artisans and craftspersons in the entertainment industry, CLICK TO TWEET including live theatre, motion picture and television production, and trade shows."