From a business perspective it’s very simple, raise the rent to market value / increase profit.

Brandon is absolutely right - the process is simple, it's the work that's not that easy. 

Google "Sean Terry Simple Strategic Seller Script" and it should come up

Please click on the links, give them a read, and share your thoughts in the comments.First is a post that I feel will help not get overwhelmed with the amount of info that is here on BP:https://www.biggerpockets.com/blogs/5868/52761-the-simple-guide-to-getting-started-on-bpThe second is a post that will help get you focused with your real estate investing goals:https://www.biggerpockets.com/blogs/5868/52743-im-new-to-bp-any-advice-would-be-appriciatedThe last one is a post that will help you choose an “investor friendly” real estate agent.

Plain and simple.  2.

Contrary, if you have zero experience then you might want to consider something more simple such as syndication or buying into a note fund. 

EFT’s are a simple way.However, I am highly against holding gold as an asset.

I use a really really simple roommate addendum that requires signatures from the current tenant(s) and the additional tenant.

Please click on the links, give them a read, and share your thoughts in the comments.First is a post that I feel will help not get overwhelmed with the amount of info that is here on BP:https://www.biggerpockets.com/blogs/5868/52761-the-simple-guide-to-getting-started-on-bpThe second is a post that will help get you focused with your real estate investing goals:https://www.biggerpockets.com/blogs/5868/52743-im-new-to-bp-any-advice-would-be-appriciatedThe last one is a post that will help you choose an “investor friendly” real estate agent.

This is very common in California, as you are experiencing.Consider this:(Annual Cash Flow + Annual Appreciation) / Total Investment = ROIIf you bought the house (simple numbers) at $500,000.