"Drug-related illegal activity" means the illegal manufacture, sale, distribution, purchase, use or possession with intent to manufacture, sell, distribute, or use of a controlled substance (as defined in Section 102 or the Controlled Substance Act [21 U.S.C. 802]) or possession of drug paraphernalia. b.

There was a unit in which he found meth paraphernalia, and this particular unit is a 4 bedroom with a potential to make an office space a fifth bedroom if we add a wall.

Also as a real estate investor you don't always know who is answering that door I've been through houses where the owners had no problem leaving all their drugs and paraphernalia out in the open, some people are a bit out there to say the least, I would personally advise against it.   

Get police/fire department results with regards to mjs, ask what other drug paraphernalia was found in the room.

If he is in fact in the middle of a lease, then you could give him some sort of legal 7 or 8 day notice for breach of lease agreement for drug paraphernalia.

Then, today, one of my contractors informed me they found drug paraphernalia inside this morning.

Judging by the grab bars and other paraphernalia, this likely happened when the last lady of the house grew to frail to navigate the grand staircase to the master suite on the second floor.The second floor has the master suite (~800 - 1000 ft^2) on the left-hand side of the house and two smaller bedrooms (each about 400 ft^2) on the right-hand side.

I buy foreclosures and distressed, so during the initial rehab I'm always finding porn, drug paraphernalia, occasionally falling through rotten floors, evicting wild animals, discovering termite damage, etc. 

At a move out inspection meth paraphernalia was found in one of the units.

"Slumlord property" means residential rental property that has deteriorated or is in a state of disrepair and that manifests one or more of the following conditions that are a danger to the health or safety of the public:Structurally unsound exterior surfaces, roof, walls, doors, floors, stairwells, porches or railings.Lack of potable water, adequate sanitation facilities, adequate water or waste pipe connections.Hazardous electrical systems or gas connections.Lack of safe, rapid egress.Accumulation of human or animal waste, medical or biological waste, gaseous or combustible materials, dangerous or corrosive liquids, flammable or explosive materials or drug paraphernalia."