I know in Philadelphia if I had a 2 BR house it would be viewed favorably by tenants who are seeking 2 BR living situations because most inventory will be apartment style living and for this reason would achieve a rent premium.

What zoning code could I request a zoning variance or rezoning that would allow us to have the 2 livable units on parcel, one primary residence and one additional living unit (known currently as ADU)?

Here's a little background on Tenant situation...has 2 or 3 young kids, an adult sister, an aunt with her male friend and the lessee has a male friend, that all appears to live in the apartment but aren't on the lease.

Some of the best investments can be found in neighborhoods where you may not want to live, but the numbers support it! 

I don't know your living situation but if your paying x,xxx for rent or a mortgage and instead by living in one side and renting out the other you will be paying y,yyy instead and y is less then x that's great, especially if you can rent out your primary residence and make income there too. 

I live in the Tyler, TX area, but I hold my mortgage licenses in Pennsylvania and Texas.

Yes 1k sqft is small but probably much better than living with family.

Quote from @Juan Perez: Greetings,My first home was paid off over a year ago, and I am now living in my recently purchased 2nd home.

The kitchen, living room, and bedroom are one room, the laundry and bathroom are together.

I currently live in WA state and invest out of state for buy and holds.