You have a tree/bush rubbing against the building.

If it's an older building surrounded now or in the past by mature trees with serious root systems, there's a chance the main sewer line to the stretet is leaking.

@Scott Trench  Well anyone who says you can get by on little sleep because the need for sleep is a sociatal delusion, and uses his book as a platform to sell daily planners and calming aura and soothing chakra tea,  isn't someone I'd look to for serious life advice.

Initial Landscaping clean-up is complete.In the back...weeded dumping area is gone, Ivy trimmed back, leaning tree in rear is gone and all bushes trimmed.The Stumps on the side have been removed from area where we need to add access for door on 2, dogwood trees in front pruned (looking good!)

Don't lose sight of the forest for the trees.

I guess my question is whether there is good way to figure out who the owner of the property is since it's empty and not on the market.Another possible option is a distressed property, with a rehabbed interior and a sad exterior/ roof/ yard on Byrom St that has been on the market for 4 months with price drops, and up until last week had a giant tree hanging over it which was just removed.

Some of my rental properties have extensive damages outside, such as down trees, fence collapsed, sheds blown over and none of those are covered since they are not part of the main structures. 

There are plenty of more established / less variant neighborhoods as well.  1% deals kinda grow on trees here, 2%+ deals can be found with a little work simply picking off the MLS.  

I paid $6400 for the house, rents in the area are typically $1200-1500 a month, House is a complete shell and has some Structural damage from a tree falling on it towards the back.

The lot has a slight slope from back to front but there are essentially no trees on the property.