When it comes to your question I can tell you’re an apartment person with amenities but a lot of people prefer to live in places that are more like a home with more privacy and a yard.

C'mon man these properties are risky enough already in Memphis.FIRE THIS PM IMMEDIATELY and try to salvage the second half of the years rents. 

All in all though if you have a long time horizon its one of the best investments in the area imo because they are building a pedestrian bridge to Navy Yard ( https://www.washingtonian.com)which is one of the hottest neighborhoods in D.C. which will increase property values greatly and in the very long term may even spur development of Anacostia's waterfront which if that happened and i'm well into the realm of speculation here and this may be 20-30 years out but if you had two waterfront areas both walkable to each other it could be one of the best neighborhoods in the entire area. 

The higher value is mainly due to the fact that we're the only home with a fenced in yard and we have a significantly larger patio area than the others.The point is, all of the other 5 homes are 2 bedroom, 1 1/2 bath.

@Aaron BihlIf you don't mind me picking your brain a bit, did you separate the yard, or do they share the same space?

This also lets you check on things such as gutters and yard upkeep that might need more tending to at certain times of the year.

Why are you only considering investing in your back yard? 

If there is a dog, she will need to be 'home' at the time of showings, but she can take the dog for a walk or put him in the back yard.

@Andy Monaghan don't forget a yard sign.

That way if they aren't a candidate for quick close then you can salvage the deal and turn it into a listing.