http://www.abc.ca.gov/
You'll need a license to manufacture/distribute beer and the neighborhood association needs to have an "off-sale" license to sell the beer... they have special event permits but they all deal with on-sale licenses (not sure about off-sale licenses)
What you can do is auction off a "Brewing Lesson" that includes keeping what they brewed during the lesson. This way you are not selling the beer but auctioning your time and ingredients.