He Built a Crooked House ss by Robert Heinlein about someone who builds a 4 dimensional house, and the consequences.
Vurt Jeff Noon bizarre, psychedelic Manchester
The Final Programme and other Jerry Cornelius stories by Michael Moorcock. Much of this is set in a decadent future version of Notting Hill. You can see where some of the inspiration came from if you look at the first 20 minutes or so of this documentary about the band Hawkwind:
Bick has already mentioned Ballard's short stories. I think it is worth going a bit further with Ballard:
High Rise. Set in a residential high rise. These were seen as the great post war solution to the old innercity slums. In retrospect they destroyed communities and dehumanised the inhabitants to a significant degree.
Vermilion Sands. A collection of related short stories about a community of atristic exiles living in a desert community. Concentrates on the architecture and isolation of the community.
The Unlimited Dream Company. Shepperton gets a psychedelic makeover.
Cocaine Nights and
Super Cannes. Both set in the Mediterrannean coastal super conurbations around Cannes, and the Costa Del Sol. Anyone who has ever driven SouthWest along the main road from Malaga will have seen this strange, divorced, largely expatriate coastal strip with miles of gated communities, British pubs, and golf courses.
Ballard's intense dystopic visions of urban life were a significant insiration to the early British electronica scene, as discussed in the early parts of this fascinating film: