Non-payment of rent is always the path of least resistance to get someone out in a somewhat timely manner.

It depends on non-SEC 8 market rents for similar properties, the utility estimate for your property, and the tenant's income.

The bank will want something as a release of liability in selling the note to an individual or non-banking/mortgage company.

Correspondent lending typically takes one of two forms: delegated or non-delegated.One approach is to obtain your loan purchaser’s criteria and documentation, (hopefully) adhere to them scrupulously, and originate the loans yourself.

Background: purchased property with inherited tenants. Tenant had bf living with them I made bf sign lease amendment to be on lease. Tenant informed me they would be leaving February first. (M2M Lease)A couple days la...

The meters, bills, old permits (should be available through the city planning), the appraisals, etc.Most appraisers check with the city on permits and non-conforming use while doing their research. 

I have a pro forma  using very pessimistic occupancy/booking percentages (worst case scenarios) which identify a very nice cash on cash return, and the ARV will (again, pessimistically) be at least double the purchase+rehab costs. 

At least it will show that someone put forth effort to return the money like you have been trying to do. 

First thoughts are finding a way for the tenants to use it for a fee, either rent the space monthly or create a space that can be rented on a per-use basis....or possibly rent to another non-tenant individual for office use of some kind. 

But if you are looking to buy and flip, you could see substantial returns.