UPDATE&EDIT: The same workaround for the Brazil and Las Vegas properties will work for this one too. Thanks to Jo Gilliam for doing further testing.
First there was the Brazil Property Bug . Then came the Las Vegas Bug . We now present....the London Property Bug. It’s the same thing as those who try to build their properties are told “You do not meet the requirements” even though they do. A workaround for the Brazil and Las Vegas Property Bugs is outlined here but it appears to work for the London Property Bug. Those of us who have long since built our properties are not affected by this but Zynga needs to fix all 3 of these bugs if they want to keep newer players in the game. Thanks to Joe Smith and Patti Payne Sheppard for posting this issue on our fan page. Please comment if you find a workaround.