You would be tied up in court for years trying to fight the government and likely lose. 

Of the 19 properties on the list, only five were habitable, three had squatters and the rest were tear downs in blighted areas.When people say "housing shortage", we're talking about habitable homes which buyers would consider "move-in ready", not tear-downs, rehabs and fix-ups ("handyman specials").D'ya ever notice all the unfinished subdivisions now languishing in various courts and forms of proceedings?

I have the feeling this tenant will not leave unless court ordered. 

I have the feeling this tenant will not leave unless court ordered.

Small claims court

Working with my resources i was able to convince seller to provide close to 10k in concessions and additional repair money to put in escrow hold back for repair repairs after sale and money coming from sale proceeds. 

hi, i’m in pennsylvania, and every time i win against my tenant in court and am awarded possession of my property, the tenant simply appeals the case within 30 days (usually on the 30th day) with no justified defense, buying himself months at a time while the courts issue a new court date . is there anything i can do to prevent this next time?

The ball is in the professionals court in all there favors.

If it can't be legally zoned as a third unit then a written lease is useless as it wouldn't stand up in court.

The courts usually require a thorough due process to insure that heirs of the  previous deceased owners don't get disinherited and deprived of their legal rights.