Added mini split.  

True, but (a) they were typically experienced investors, and (b) today's market includes record prices and high mortgage rates, which is a double whammy. 

We needed to build more there but the cost to build has doubled and the return is t sufficient.

Same number of bathrooms and bedrooms.

At minimum, stage the living room and primary bedroom to give it some warmth.That said, have you thought about cutting bait and putting your money into a market where the numbers actually work?

Buying a property as primary, renting a bedroom or two to friends is a good way to start building your RE portfolio.

EBR housing allows around $1,300/month for 3 bedrooms.

I have a tenant who lives in my very nice three bedroom unit whose lease provides a pet authorization for “one dog, one cat and one rabbit.”

Both "2 bedroom" units were listed as having the same market rents. 

As eric pointed out, someone who lives in Phila will have to be registered as a manager of the property to obtain a rental license - usually a PMPersonally if you're looking to target SFH I would recommend: Roxborough (for 3+ bedroom - there is a large saturation for 1-2 bed apartments in area), East falls, E and W Mount airy (need to be proficient in neighborhood to know where the good and not so good blocks are, and far NE philly.