Also, do I have to become a dealer?  

The dealers had gone but are not back and in front of the building again.

And if I keep the deed will they be allowed to purchase a mobile home from a dealer if they do not have the deed in hand? 

The dealer was giving me $1500 (trade in) for my car.

I speak with sellers weekly that were oversold by dealers on beautiful new and used mobile homes.

@Matthew Buttner - Depending on how much "inventory," you carry, how long you hold, how frequently you sell , and how substantially you upgrade/renovate you may cross that grey area of being considered a "Dealer."

I put barricade everywhere, window, door,etc for them not to enter hahaha .... crazy.Squatter is really nasty, and purchasing drug dealer house is nothing fun hahaha

Lending of monies for securities, by either banks or broker/dealers must follow the regulations of the Federal Reserve. 

So an additional 7,500 or so in tax if you are considered SE.I've actually researched and think you can get away with putting flips on sch. d if you are real estate investor and not real estate professional/dealer.

Shysters will price a property higher playing with terms, kinda like your no money down car dealers, just your trade in.