What they would have meant was that Carey Street was an area of "court dwellings". They're clearly shown on the large-scale map you've provided. In fact 'Court number 4' is named.
Most were jerry-built and became slums and, eventually, they were all replaced.
Carey Street, as you know, went quite early.
Do a Google for "Court Dwellings", if the expression is new to you.
Bookmarks