It is my understanding that in Pennsylvania an escrow account is required for tenant security deposits.

Depending on how it is done and what guarantees the government offers and requires of the released entities, interest rates could move slightly higher.

Short-term rentals of non-owner-occupied properties will also require a special use variance which is obtainable by starting with the completion of an application in the Zoning Department."

I don't know what they are but unless there's something in the city that requires that kind of notice, it sounds excessive to me.

In addition, the Grantor will probably be required to sign the same seller's affidavit that are needed for a non DIL closing. 

You'll want to read Maryland new requirements for landlords.https://dhcd.maryland.gov/TurningTheKey/Documents/HB693-Land...

Only a few simple documents are required, including a valid passport, birth certificate, and proof of address.

It requires hard work, strategy, and a willingness to take on projects others might overlook.

This route requires more attention as you will need to ensure that you are finding good deals wether they are on the market or off market.

The answer will form around what work you are doing that requires permits.