I saw Richard Trethewey of Ask This Old House install an AAV as part of a kitchen island sink system. I thought I might be able to use one for the water line for my washing machine. I'd like to relocate the machine but I don't want to have to open a lot of wall area for the air vent. The AAV seems like an good approach but apparently its not code in a lot of places.
I live in the San Francisco Bay area of northern California. Apparently California has the "California Building Code (CBC)...based on the... International Building Code (IBC)" but I think one has to be a professional plumber to read those. How can I find out if I'm allowed to install an AAV?