You are correct and so is Philip. It is important to note that this house is located only one block west of the dividing line. I live in the area, and I can tell you there isn't much difference - in terms of real estate value or otherwise - in this part of these two neighborhoods. In other words, it wouldn't change anything in terms of value if this house was located a block and a half east of where it is. In this light, to me anyway, it doesn't make any worthwhile difference whether you call it Mayfair or Albany Park.
If you are in need of a Real Estate agent that lives and works in this neighborhood, feel free to email or call me with further questions: (773) 234-3869, firstname.lastname@example.org
I will be happy to do more research on this or any other homes in the neighborhood. Good luck!