Boom Bust (PDF)

In the two and a half years since the first edition appeared (April 2005), events have unfolded as predicted. Then the consensus among forecasters was that the boom in house prices would cool to an annual 2 or 3% rise over the following years. In fact, in keeping with the 'winner's curse' phase of the cycle described by the author, prices rose by more than 10% per annum in Britain.

Harrison's first book, The Power in the Land, predicted the early 1990s recession. Boom Bust, warned that investing in property is not always a safe bet, because the housing market is subject to a sharp downturn at the end of a remarkably regular 18-year cycle. The crash of 2007/8 occurred exactly as predicted. His forecast was based on a careful study of the evidence from property markets in many countries over the last 200 years. Gordon Brown's claim, last made in his 2007 Budget speech, that 'we will never return to the old boom and bust' has been proved false.

The reason for the instability, Harrison explains, is not the housing market itself but the land market on which all buildings stand. Land is in fixed supply ' as Mark Twain noted: 'They're not making any more of it'. Therefore, as the demand for land for new homes and offices rises with population growth and economic expansion, market forces, which normally increase supply to reduce prices, have the reverse effect: prices rise. This encourages speculation, with banks lending more against escalating asset values and reinforcing the upward spiral.

Under existing government policies, the only way land prices can be brought back to affordable levels is a slump, undermining the banking system and causing widespread unemployment and repossessions. This is exactly what happened in America with the collapse of the sub-prime mortgage market. The run on Northern Rock showed the UK economy is not immune.