Get clear with the stringent CA rental laws, knocking on the door may be ok but can be interpreted as an inspection. 

-------------------------------------------------------------------"Upon them knowing" Sounds like actual knowledge to me, which she did not have, so your statement that "[t]his did not happen" is unsupported by the facts.But then again, I'm just a lawyer, so what would I possibly know about contract interpretation?

I informed her of my shock and surprise at this INCREDIBLY AGGRESSIVE business approach, which she said she could understand my interpretation of, but that is the company's policy.Despite finally getting the approval for termination of contract (based on lack of communication and followup), it still took 3 weeks for installation/removal to receive the termination, at which point they attempted to further delay the process by scheduling the removal another 5 weeks away!

It will all come down to how courts have interpreted the laws in the past.  

Your interpretation of that would be the cynical interpretation, optimists and apologists will point to the giant Fannie Mae database of appraisals, a database that did not exist to be cross referenced, as is currently the case, 5 or 10 years ago.

The thing about law is that it requires a lot of interpretation, as language is tricky and definitely not unambiguous.

I have a very good understanding of my state revised statutes, where to find them, how to interpret them and apply them.

And plenty of people have been interpreting this to mean garage conversions to JADUs are allowed.

Therefore, their lease ends on January 12 and they owe you all of December and 12 days of January.I'm not sure how Oregon law interprets it, but just because the law allows them to give the 30 days notice at any time during the month doesn't necessarily mean they can move out mid-month after those 30 days are up.

Under the legal doctrine of four corners, the lease would have to be interpreted by other parts of the document, not just the first page where someone forgot to put down a dollar amount for the rental.