@Steven Baker, Like @Bill Brandt said your business model is exactly that of a dealer. 

But it's so rough now, it's hard to go anywhere without being around sketchy junkies, homeless people on drugs raging, etc.

Find a Pre-Fab dealer for your countertops.

The dealer wants to obtain as much as possible.  

projects we looked at were in Oregon and if your doing actual MH and your doing a larger project like 100 to 200 units it can take a few years to many years to fill them  and you usually need a mH dealer on site to sell them  etc etc.

Have it taken out carefully and sell it to a specialty dealer when the time comes.I think this should tip the scales toward covering it, and I almost always refinish my own floors, using my own equipment.

Looking for advice from those with experience: We manage a small multi-family property, and we have a strong suspicion of drug use in one unit.

She was very afraid of moving to this neighborhood because there was a strong belief among Americans and Russian-speaking immigrants that this neighborhood was criminal, full of murderers, drug dealers, and thieves.

He has been really rude to me, even to go so far as to accuse me of being on drugs because I am demanding all my money.

@Lynn Le There are a lot of factors at play here - "dealer" status, 1031 exchanges, nonresidency, entity structure, etc. - a comprehensive answer would require a deep dive into the details so I will keep my response as general as possible.You are correct in saying that you would generally be classified as dealers when selling a home you bought with the intention to fix and flip it.