Claudia Hernandez wrote:..... Not alot of help in this area, county is willing to work with me if I can get a structural engineer to put their stamp of approval on my plans. I feel so overwhelmed with everything I want to do and what im actually going to be allowed to do. ...
An engineer can be held legally accountable for anything they put their stamp on; so if you do their research for them, it will be easier for you to convince an engineer to do so on your plans. Google buildings in England made of cob and contact the owners to see how they met building codes and how they kept all the dampness out of their cob building during rain and fog.
Then google California building codes for cob and maybe Portland, Oregon too. You'll begin to understand the precautions you'll need to take for rain and have a packet of information to show an engineer that these types of buildings are legit forms of building.
Good luck!