There are a bunch of great sites in San Diego. Most of the ones I know of are in North County:
I have a 1/2 acre site in Vista that is off the hook!!!ha
https://www.facebook.com/pg/ImrayWellnessCenter
Finch Frolic Garden is pretty amazing
http://www.vegetariat.com/finch-frolic-gardens/
If you are down for hanging with cool burners that are into sustainability
http://www.theemeraldvillage.com/media-archive/videos/
Some amazing projects done by these guys in fancy neighborhoods
https://www.ecologyartisans.com/p/portfolio/
Exotica Rare Fruit Nursery is not to permie but it is classic
Terra Madre Gardens has an amazing passion fruit tunnels.
http://www.terramadregardens.com/
Sky Mountain, I've never been but i here it is dreamy
https://www.skymountainpermaculture.com/