We've had 2 instances of tenants' doors being broken down - one by the police in a case of mistaken address-identity (the city later reimbursed us for the repair), and one by an alleged robber.

Nothing to that extent, I know someone who has an identical lot on the same street who is regularly getting offers for 15k-20k, so when I won the auction for 4700 I figured even if I run into minor problems ill make a decent return.

My investment thesis, needs, preferences, tax situation, is never going to be identical to yours.  

Thieves could break in and steel all the copper piping.

There is a distinct area of our city the has a greater number of house fires and interestingly the police department crime map overlay indicating high crime rates is almost identical.

Kenneth, your plan is identical to mine.

I had almost an identical issue.  

The appraisal came out about 15% below what it should have and the appraiser did not even count the sale of an almost identical property 3 doors down that was sold 2 weeks prior.

@Jackson Sandland i have done a lot of SFR BRRRRs in the last years and it is interesting to see how appraisals for pretty much identical properties come it at +/- 10%.

I moved in to the empty unit, and learned over time from my other new neighbors that my tenants were the neighborhood thieves/drug dealers.