Here's a blog post about small home-based business owners' concerns about using their address, but apparently they are not Californians, because the CA Atty General's office told me I was required by statute to give a street address for the executive office (again, not the address for the service of process, which is different).

ISO solutions! Thanks!

Here's that link:
Web Link

There are plenty of abandon houses around town.. ;) Go check it out yourself..

I need an address where I know I will get any mail the secy of state decides to send there instead of to my "mailing" address...)

Although the prospect of free rent is appealing! ;-)

Instead of a PO Box, get a mail box at the UPS store (fka Mailboxes Etc I think). You can also use their street address for non USPS delivery, and I imagine for anything else you like. More costly than a PO Box, but I think it would solve your problem.

Thanks --it looks like there are some "virtual" office spaces for rent, too, where they have a receptionist, conference rooms,etc. The problem for me is just that the the Mailboxes etc and the virtual offices are all too expensive. I"m starting up online on a shoe string, and I just don't have money for things like that (house poor in Palo Alto if you know what I mean). The PO Box is not that expensive and we've had it for decades.