It has something to do with self-employment taxes and paying less in taxes. 

Double lot = 2x property taxes.

Just trying to find my niche, whether it’s wholesaling, Tax liens & Deeds, or other investments strategies I’m always down to connect with local like minded individuals to share advice and opinions 

Is the main reason to get into tax liens to foreclose and get the property? 

This high cashflow is great, but it is being countered by slowing down my ability to get more financing for my next purchase as I typically need 1-2 years on a tax return to get rental credit from said STR when qualifying with a lender for the next purchase.

It has something to do with reducing self-employment taxes of 15.3%.LLCs are generally used for passive income like buy-and-hold investments. ...

Or should I keep paying the mortgage and benefit from the mortgage interest tax deduction?

The tax benefits of real estate come from the ownership of rental real estate.

One of the greatest benefits to the Philadelphia market is the low property tax.

If it was a gift he’d inherit her cost basis and owe capital gains tax upon sale that would have disappeared at her passing.