(The arrangement was that they pay me for electricity because they share electric with other unit.) and they started to complain about roof leak which caused them hardship.

I am looking for clean and rent ready finishes, not luxury or custom.

Important Question: How do you manage your time and cleaning schedules efficiently for quick turnovers between guests?

Seems renovating this part of the attic would require ceiling insulation, drywall, flooring, electrical outlets, & heating source.My concern is that a reappraisal wouldn't add anything to legal square footage. 

You'll either have to convert the house into a legal duplex by getting permits from the city or you install an electrical panel split so that you can track each units/bedrooms of their power usage.In terms of lending world and being to use the rental income, the property needs to be a legal duplex meaning title must be shown as a multifamily and not a single family in order to use the rental income separately.

If it was built before, say, 1960 there may be a slew of electrical work you'll need to do to stay in regulations with current times and, of course, for the safety of a future buyer.

Before I bought the house, I found a 3 inch pipe with a spicket and electrical wiring going to it.

Her clean criminal background check didn’t s help her spitefully from stop her paying rent.

You want to trust people of course, but it only takes one bad one to cause cleaning headaches as well as unhappy neighbors.  

It's just far better to bring the loan current or pay it off or file for a "clean and honest" bankruptcy to stop the foreclosure.