Good idea, I will look around and see if there are any such places that are local, but given all of the searching and looking I have done as of late turned up nothing. I would not have to register, nor would any of my tenants under the state and federal laws as I read them. So long as I am not brewing it for them, I am not involved in their manufacture, is it not my beer or wine and therefore I don't need to register as a brewery. Second, as I am only renting space and leasing equipment, again the product is not mine. I would have to have a waiver signed also stating that you are not brewing anywhere else and that if you brew over 200gal I would have to report is- and you would have to agree not to sell your product. All of these things make you eligible for a tax stamp in California... My thing is space and security and since you are leasing- the space might as well be your home.