Increasing the rent would force the tenant to leave.

Can my tenant force me to accept section 8 in the middle of an existing lease?

Watch the market carefully, be patient for the good deal, and try to buy something with value added too (safer) as you can force appreciation. 

Have any of you ever had to be forced to negotiate with the tenant who had legal rights to the property, but who you couldn't trust?

Currently, there is only 1 huge old gas hot water furnace that services the whole house and 2 hot water boilers, 1 services the basement and first floor and the other one services the top floor.I have been quoted $18k for a complete forced air, central air system for the 3 units.

Top down policies alone, no matter how progressive, are not enough to change the dynamic of a city without help from market forces and private investment.  

Been there, thought he borrower choose to hand over the property deed-in-lieu, rather than forcing a foreclosure.  

I'm hoping to buy a fixer upper and force appreciation at least a little so I can live in the property over a year, refinance, gain some equity ( I think I read somewhere that most banks need you to have at least 20% equity in order to be able to refinance?)

The rest of the state will slowly follow suit once our Democrat governer is elected out of office.The work force is highly skilled and manufacturing centric, but the union mentality has tarnished things since there's an entitlement sentiment among the blue collar workers.

Everything I have read, or heard about CRE is this is how you force appreciation and buy more properties.