Code enforcement is now telling me I only have a 3 unit property, so I have to kick my tenant out of the newly upgraded unit.  

It's just very simple, clear, long established and industry accepted, and has significant knowns for how any enforcement or default type actions are handled. 

Enforcement is apparently only done If someone complains.

(There’s no way to transfer title that can legally prohibit enforcement of due on sale, except transfer to the owners REVOCABLE trust or transfer to children upon death).  

Either you enforce the lease, or you don't. 

If they are VERY professional, they will have their processes in writing as verification that policies are enforced equally and fairly by their entire staff.6.

There are some services like Guest Ranger but we do not screen in the traditional sense.Make your house rules clear and make it clear they are enforced, then they tend to screen themselves. 

Here is text from sb13 “the violation is not necessary to protect health and safety, as determined by the enforcement agency, subject to specified requirements.” 

It seems that all posters above are focusing on building code which is irrelevant decades later.Municipalities enforce the maintenance code in the present for preexistent structures.

Seems like tens of millions of dollars were raised from unaccredited investors...Here are some SEC links for a partner and CFO of Norada showing previous fraud history:https://www.sec.gov/enforcement-litigation/litigation-releas...https://www.sec.gov/files/litigation/complaints/2017/comp240...Jon thanks for sharing.