I also want to make to put a kitchenette in the basement to make it a full Studio, with its own entrance.

In Pittsburgh and Austin, the online county records show the owner of each property. 

Just to set the record straight, the city can't require you to replace the 60 amp panel because it is "grand-fathered" - meaning if it was up to code when it was installed they can't force you to replace it now or in the future. 

When deed is recorded, the PCOR will go to the county as well (sent both together). 3.

Said they recorded the calls and filed the letters away.

The zoning enforcement officer shall require that a declaration of the accessory family dwelling unit for the family member, or members, and its restrictions be recorded in the land evidence records and filed with the zoning enforcement officer and the building official.

If they come off aggressive or not well intentioned/motivated when you address the issue, then drop the facts on them (eviction on record/no place to live/court) if they are positive and motivated then work with them and put your hard working self in their shoes and show empathy.

County records show it as her primary residence but she is obviously not living there anymore. 

Maybe I'm confusing this with bonus depreciation.I also thought I read that I would need to purchase the vehicle before the flip was sold (recorded).One other question, I generally lease and write off my lease.

Alternatively, once you record the quitclaim deed you can evict the squatter and rent the property immediately.