So I just received a phone call from a tenant that his roommate is on hard core drugs and does not feel safe in the house and wants off the lease.

I agree, In my case I won't offer if I see there is a serious foundation problem, under or near high tension power lines, too near a cliff, flooded, burned, drug house, war zone, more than 3,000 sq ft, under 1,000 sq ft, clouded title.

If you sell before mid-2019, the tax treatment will be for the sale of an investment rental property and for the sale of a primary residence.  

Any pests/bugs they've had or recent treatments?  

But now only real property is available for 1031 treatment.   

Only the sale of investment property qualifies for 1031 treatment. 

What has been posted is enough to be "dangerous," if it wasn't tax season I may be up for a phone call to discuss your concerns further.If you are interested in investing in a syndication and the tax treatment is a material matter I would question whether it is a good investment. 

Cost segregation looks at the $400k of the building and picks out pieces that qualify for a different treatment.

As well the city being a hub for the drug trade.5) Sure why not.

Depending on which, the treatment is entirely different.