I call a house that shares a wall structurally (not simply contiguous with two side walls) a “true row house.” There used to be thousands of them around the city, mainly built up to around 1880. What after that, houses start to split apart, usually in the standard three or six foot distance. I like these houses, particularly because of the Formstone on the houses above, because they remind me of my time living in Baltimore.
The one’s with form stone seem like they should have a window above the door. Look a bit strange with out one. Do you think it could have been covered up?