Some things to look out for would be disposal of medical waste issues, a lot of landlords do not allow abortions on premises, fetal tissue transplants, or medical marijuana, for example.

We are even in a state that passed a law to allow the use of recreational marijuana.

For my SFH rental in California (San Francisco, a tenant friendly city), I also state: late charge of $25 and $20 per day (not to exceed $200 per month), no candles, no fragrance plug-ins, no illegal drug use, no smoking and no vaping of any products inside the house (I'm okay with weed use in the back yard or outside since marijuana is legal here), tenant mops up standing water, oil spills in driveway, etc.

Also, if your state has opened the door to medical marijuana, this category loves former bank sites - vaults being a big part of it.  

It was completely trashed and smelled like marijuana.

For example, I had one applicant that had one marijuana possession misdemeanor charge on his record, but nothing else.

Cocaine, marijuana, meth, meth alt, opiates, opiates alt, benzodiazepams, methadone, pcp, barbitcurates. 

Again I'm going off anecdotal evidence here, but I believe a large number of transplants are here for legalized marijuana, and with state regulations tightening as well as more states legalizing, along with all the other factors at play (such as skyrocketing rents), we will see a steady slowdown of population growth.

If you're worried about what a potential renter may do....here's what I did when I advertised on GoSection 8......No Smokers of any kind,....period....no vaping, no marijuana, no e-cigarettes, NOTHING.No Animals or Pets, PERIOD (Of course if someone told me they had a Service Animal then I of course showed them the property because by law I had to).No Evictions, EVERNo Felonies, EVER1st Month's rent is due BEFORE move in.I could care less about their credit score because I know Sect. 8 is paying most of their rent anyway.I also let them know that there will be a background check that THEY pay for through SmartMoveAlso, in the ad it stated that (their portion of the) rent is collected electronically through E-RentPayment so if they don;t have a bank account then they need to have one before applying.Still got TONS of inquiries.

We had to add in along with no smoking cigarettes, no vaping or marijuana.