Joe Konrath first mentioned it last year, and I heard it again recently at Romantic Times. So I looked it up.
John Clute says: "UFs are normally texts where fantasy and the mundane world interact, intersect and interweave throughout a tale which is significantly about a real city."
Well, that would certainly fit The Tomb: mythological Hindu demons transported from India to NYC to fulfill a curse/vow, ancient magic necklaces with healing powers that allow two characters to live indefinitely. They intersect and interweave with Manhattan and with Jack who is the ghost in the city's urban machinery.
The first recognized urban fantasies are either Faerie by Ray Feist or War for the Oaks by Emma bull, both published after The Tomb.
So, yes, there's a case to be made but I'm not entirely comfortable with it.
What do you folks think?