Otherwise, unless there is actual damage and not just cleaning it would be an additional charge above wear and tear for cleaning.  

In addition, I purchased the property at market cost.

So, you may need to read all of the changes that have made to the ordinance which may appear at the end or in additional separate documents. 

I.e. a prospect has a background check that under the owner's screening criteria says it may require an additional deposit, the owner must communicate with that prospect regarding that you may not do so.   

There could be additional reasons as well.

This could be a good additional income stream later in retirement.Am I putting myself at risk?

Considering your current employment situation, DSCR is definitely the way to go in addition to the idea of utilizing a 1031 exchange on the property in MA. 

If the owner wants to step up, I would be happy to answer additional questions about the process.

An additional benefit of a detailed engineering-based Cost Segregation Study is that it can increase potential insurance premium savings as well as provide support for the property tax appeals process.

Since your property is in Philadelphia city limits, at the time of transfer, the title company will collect 3.278% of the sales price to be paid to the county and an additional 1% of the sales price paid to the state in transfer taxes.