In the case of GEG, we let our members know we did not have a track record with them - they were new to us and just being tested - and therefore it was even more important to perform thorough due diligence since we can't be involved in the transaction. 

I hope you found the Google reviews before getting involved.

From what Ive read, it looks like I may have to get a business certificate to do this in SF but Im not sure what that entails or what else is involved?

Since your parents seem open to your involvement, I would start start small. 

HoltonWise is currently involved in litigation on the topic.

I am also involved in management at one of the largest STR property management firms in Cashiers.

You would also want to ask what is your current rate, what rate can you get, what are the closing costs that are involved including points, ect.

Something to watch if you are mindful of the government being over-involved in nearly every single LLC registration.

For example when someone wants to have financial freedom and spend more time with family, but then sets a goal by creating a heavy active income stream that involves their personal involvement daily.

Keep in mind magistrates deal with MANY MANY cases involving small issues so their rulings OFTEN may not follow the correct technical application of the law.