The ordinance defines a primary residence as your primary "place of return" as proven by a series of documents.

This is because you would be engaging in Professional Real Estate activity as defined in the above stated statute.

Define your criteria very specifically. 

It might reference "transient" but how do they define that?  

I am familiar with broad negligence and responsibility - I'd  just like to find a statutory paragraph somewhere that really defines what happens in this situation, which does not seem to fit under "negligence" on our part. 

You just need to define a strategy and what you want and then go for it. 

This doesn't mean you're available 24/7, but it does mean that within the structure you define, you can provide value they won't find anywhere else.I'm not saying you shouldn't be cordial or anti social, you just need to have a well defined business relationship, and make sure you know which hat you're wearing when boundaries get tested.

@Ethan Cooke all the SF RC regulations still apply- like tenants ability to add roommates as they wish, without your explicated permisssion as long as they don't over crowd, which is liberally defined.

@Mitchell BerryFinding deals starts by learning your market and defining your strategy.

Additionally, West U is defined as a city (still in the 610 loop so a bit more urban) and controls many of the laws in the area.