It might have been used in mfg drugs or have someone murdered not disclosed.

The NFPA and the ICC developed and publish codes through a prescriptive process, mostly because some got hurt or destruction and devastation occurred.

We are a little concerned about running into problems with this tenant as it looks like the person on the lease is not actually the person in the unit as well as the + drug use that may or may not be going on in the unit.  

All new cabinets are needed paint inside out all new windows like 60 plus windows to replace they have window AC units (but again that might be the norm for the area and yes I agree on the PM idea) and then she has a drug dealer living there, she is cool with it.

I was recently informed that there was drug activities in one of the units.

However, it was positive for a prescription medication that had been prescribed to me.

There are some areas of northern California where Vacation Rentals off the grid may be marketable, but probably not in the actual northern California areas, but more the central California (north of the bay area a little in more mild climates)  In some of the mountain areas and near the coast, such as Trinity, Humbolt counties, there are drug cartels growing pot, and several people have gone missing (they stumble upon the gardens or have gone to work at the grows, never to be heard from again).

And while it's not the norm (here, at least), there have been some problems with property destruction and drug use/arrests (and even 1 OD, though it wasn't on the property). 

One neighbor told me the house was being foreclosed on and another neighbor told me it was the only drug house left in the neighborhood.

The extended stays in our town are where all of the crime happens, drugs, prostitution, assault probably worse.