Skyscraper Index

The Skyscraper Index is a concept put forward in January 1999 by Andrew Lawrence, research director at Dresdner Kleinwort Wasserstein, which showed that the world's tallest buildings have risen on the eve of economic downturns. Business cycles and skyscraper construction correlate in such a way that investment in skyscrapers peaks when cyclical growth is exhausted and the economy is ready for recession. Mark Thornton's Skyscraper Index Model successfully sent a signal of the Late-2000s financial crisis at the beginning of August 2007.

The buildings may actually be completed after the onset of the recession or later, when another business cycle pulls the economy up, or even cancelled. Unlike earlier instances of similar reasoning ("height is a barometer of boom"), Lawrence used skyscraper projects as a predictor of economic crisis, not boom.

Careful statistical study has found that the height of buildings can not be used to accurately predict recessions or other aspects of the business cycle, but that GDP can predict the height of building construction.