We have several subcontractors that handle the process but the owner has zero involvement.

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. 

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

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

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?

Understand the fees involved and calculate the total cost for an entire year of management so you can compare the different managers.

Budget Wisely:Make sure your budget accounts for the purchase price, the cost of the renovations, and any additional charges involved in flipping a house.

HoltonWise is currently involved in litigation on the topic.

From day one I treated my involvement in real estate as a real business.This means, I had an advertising budget, a lead generating and follow up process, a back end process and money source and above all an experienced mentor.  

I hope you found the Google reviews before getting involved.