18-Year Land Cycle
The recurrent ~18-year cycle of land prices, speculation, and credit that culminates in a property-driven economic crash — used to forecast the 1990 and 2008 downturns.
Definition
The 18-year land cycle is the observation that real-estate land prices, and the credit that finances them, tend to move in a recurrent cycle of roughly 18 years: a long upswing, a brief mid-cycle dip, a final speculative "winner's curse" phase, and then a crash that drags the wider economy into recession.
History of the Idea
The pattern was documented by economist Homer Hoyt, who traced Chicago land values from 1830 to 1933 and found a recurring ~18-year rhythm. Fred Harrison revived and popularised it, using it to forecast the early-1990s recession (nine years ahead) and the 2008 crash (over a decade ahead). The mechanism is Georgist: rising land values attract speculation and bank credit, which inflate prices until the burden of land costs and debt triggers collapse.
Significance
The land cycle reframes the business cycle as substantially a land-and-credit cycle, linking Henry George's theory of land speculation to modern financial instability — a connection developed by Michael Hudson and others.
See Also
Sources
- Fred Harrison (2005), Boom Bust: House Prices, Banking and the Depression of 2010. Publisher
- Homer Hoyt (1933), One Hundred Years of Land Values in Chicago — the original empirical study.