Deteriorating exterior brick wall, 4 story brownstone. How severe an issue is this?

[Mike Bower]

Hi everyone,

One of the exterior brick walls on the outside of my building's primary residence is showing significant deterioration and damage. This is a 4 unit, 4 story brownstone in Downtown Jersey City, NJ. 

I had the home inspector look at it when I purchased my Unit, and after finding a steel reinforcement of the building in the basement, he concluded it shouldn't be a major issue - but now, two years down the line, I find myself looking at this shabby brick wall and feeling pretty unnerved. See attached photos of the exterior brick wall on the ground level, about chest height.

How would this community respond to / address this issue? Is it better to get an expensive foundation engineer at a few hundred dollars / hour for an assessment, or a foundation / stone mason contractor in to take a look? Would really appreciate the community's thoughts.

Thanks,