And i agree that the dirt might sometimes hide some treasures.However, things dont always work out that way....It takes a savvy investor to decifer where the treasure is....I will not advise anyone who is not experienced with rehab work to jump into it.....Neither will I advise sticking to TK unless, the seller has at least 12 months warranty on all major items.

Our focus has always been great customer service is the differentiation when you are renting metal boxes....I will give you a quick example. 

We went back and forth on price and I talked him down by reminding him of the value of the scrap metal that he could haul off and sell to a scrap metal dealer.

Second, BP is a treasure trove of information for new investors. 

At that point, the metal scrap/recycler is sure that there is no hazard from a high pressure cylinder going "boom!".

They just have a shell metal building so it's not all that expensive for them to move and rebuild.Also, find a metro area that has very high population and job growth then find out which directions they are growing (usually easy to see by where there's a lot of construction).

Maybe one of the prefab metal buildings? 

Investing in CA will maximize your equity/loan pay down (vs cheap properties out of state), maximize the total value of your treasured fannie/freddie loans, save you travel expenses, leverage your money to higher appreciation, low property taxes (as a ratio), and low insurance rates (as a ratio).There is no rule that you have to invest only for appreciation or only for cash flow.

A couple of Hayward idiosyncrasies: Until last year, they required metallic pipes and traps under all sinks. 

If they have not met all your criteria (perhaps income) you can consider higher security deposit, or other evidence of ability to pay, to offset that.