Hidden factors can be anything not easily visible on pictures or stated on the sales advertisement.

San Diego passes a lot of dumb 'blue' type laws (like you can't use section 8 as a factor when looking to rent to someone. 

The city is still continuing to develop, since they've only completed about 50% of the approved construction projects.

A high-low price range would be developed to help you out.When you are first starting out just figure any improvements will be the average.

With self-directed IRA the sky is the limit.Of course you must be aware of the IRS prohibited transactions and be sure to stay away from those:https://www.irs.gov/retirement-plans/plan-particip...Selecting appropriate investment option depends on many different factors such as your age and investment horizon, your risk tolerance, investment experience, etc.

Although I'm sure we all do this mentally I was considering developing one in print to go along with spreadsheets to make sure there isn't anything overlooked when considering a property. 

Other things you need to factor in: utilities like satellite TV/internet (which, since the house probably doesn't have access to cable, internet can be An Issue), and will the HOAs allow short-term rentals?  

Guess it doesn't hurt, but I thought that was something we only factor in for 5 or more.  

@James LeeHow much cashflow you’re willing to take should have your expected appreciation playing a big factor, no matter what it is

Such a good, comprehensive overview and introduction to help us keep perspective on all the ways to develop our businesses.