That being said If I found a good deal on a duplex there I would jump on it but overall haven’t found anything to catch my eye. 

Changing filters is a good time to do a brief walk through to check the condition of the property.... and catch "little" problems before they turn into "big" problems.Sure you can charge them for it, probably half of what it costs. 

Good for clickbait but very unrealistic.California is competing with other countries (not Midwest, Texas, or Florida) to maintain its status as the tech epicenter of the world, and the best competition is so far behind that they may never catch up.

The owner occupied properties you may try writing a letter telling them that you have methods of catching up taxes without them writing a big check.

Yes, the payments and catch-up wont be a problem.

You will file Form 3115, “Application for Change in Accounting Method,” with the IRS and claim a one-time “catch-up” deduction for the current year’s return.

The property you bought may think they have the rights to, but it makes come back to bite you in the rear if the city catches wind of what is going on. 

The catch is that it's in a highly appreciating market.

I thought I would be able to catch up on it over the course of the year but several issues have found me before I could find them.

It gets a pretty good rent for the size, but I still need to catch up on some deferred maintenance.