@Michael Porche isn’t Medellin Columbia place to lots of drug issues ?

and knee deep in the mindset change that comes from the gateway drug that are the Kiyosaki books and Think and Grow Rich, and stuff online like BP.

My part time job is giving them pre-employment drug screens before they can start work. 

My biggest concern though would be the heavy drug use in that area.

If ONE unit is vacant and both units are equal in rooms/bathroom composition, then the new owner will need to move into the vacant unit and then the owner can either evict to take the occupied property completely off the rental market (5 years off the rental market), evict to take back the occupied unit for personal use like moving in immediate family (2  years off the rental market), or they can evict given the tenant is a nuisance or conducting illegal activity (this is a harder method to evict since you have to provide evidence and have a case but if they're selling drugs and you have video footage or something, then make your moves) and there are a few other reasons for at-fault evictions. 

A long-time resident at where I'm now living told me when a previous owner (that went bankrupt) started accepting HUD tenants, "that's when the drugs came in" (I wasn't living here then to be able to confirm this assertion, but I have no reason to doubt it).The same reaction happens in business ("street fighting" and "lifeboat ethics").

I obviously don’t condone drug use in the house and don’t want him scaring away prospective buyers.

I was the kid in high school getting offers from private colleges over how high my test scores were, and I ended up ruining so much with drugs, toxic emotions and bad decisions. 

Is it a place where people are making very little money and have none left over, or is it a place where there are open air drug deals during the day and cars broken into every night? 

"Bob-The Son" gets hooked on heroin, vacates the property, returns to steal everyone else's stuff to pawn for drugs, gets arrested and goes to jail.