Don't worry, yes, I had them sign a lease, a mold addendum, rules & regulations, and an addendum for drug-free housing.Complication #2- They moved out with prior notice (which is required, 30 days in advance of the 1st of the month), leaving behind TONS of possessions, and moved into a shelter.Complication #3- I was never given notice.

Once you start hiring it out and passing around master keys, you can get in trouble if one of your maintenance guys gets on drugs or angry.  

It very much depends on your personal risk-threshold and definition of 'high crime'.For some people 'high crime' is when there's an occasional drug deal going on, for others it's 'drug deals on every corner'.

I've also found drug paraphernalia, kegs, and things on stuff on the walls from someone's nose.

I have chose to target these areas in order to avoid high crime- war zones. although, drug problems do exist, the local law enforcement seem to be watching closely.

As your portfolio grows, you will personally experience all of the horror stories: dealing with drug dealers; BIG damage done by tenants; lawsuits, evictions, etc.

They get involved in drugs, they drink, they don't pay their bills (including their portion of the rent), etc.

If you do one on a flip you're going to look more like a "dealer" than a "holder for investment".I've done a few 1031s but ONLY on proerties that had been rentlas for (in one case 23) years.

Additionally, many do not consume alcohol or drugs for religious or cultural reasons.The above boarding house is setup as a duplex with the "girls" upstairs and the "boys" downstairs.

That would be like a car dealer doing a credit check before you're allowed to come into the dealership.