@John Thedford depends on the PPM you use  @Michael Bishop  same thing you can pay for a PPM that allows non accreds.. they are just much more expensive and usually are used for very large raises.

Depends on the city And state but typically between $25-40/sq ft.

Depends on whether or not heat is provided or tenants pay for it. 

It still depends on the rehab though.

depends on the size of the building, but to underwrite it to formulate an offer you will want the rent roll and last years P&L and current T-12.

Depend on your debt to income ratio. 

In my city, that solely depends on the zoning and the number of units per acre allowed.

It'll depend on what type of property you have, but there are number of tax shelters that you can use on real estate investements; that's the reason real estate is such a highly sought after investment and why so many have amassed their fortune in real estate.

So I guess it depends on how much equity is still in the property once the unpaid's get satisfied.

Contractors need licenses and to be properly bonded(depending on state).