I find that sometimes the most simplest of things can create significant tension like tenants that work different shifts disturbing one another while trying to rest.

The simplest is to have both tenants qualify financially to pay the rent without a roommate. 

There are many other creative possibilities in SD county but I think this is the simplest way to start.

The simplest thing that can and should be done is to have an affidavit  signed by both parties stating that “$450 was detracted from the Security Deposit for X purpose” and stating the remaining balance.

The simplest and easiest option is to:1.

In the simplest example, your cap rate can be calculated by dividing the NOI by your purchase price.

@Wenqian Guo if you are single, doing a house hack is the simplest and most tax-efficient way to start building your wealth here in the SF Bay Area.

That is probably the simplest solution.

Greg also added a key ingredient... 

If it's the cashflow, you'll likely find passive investing (being the money man) is the simplest path to the goal.I'm excited for you on this journey!