New house sizes have dropped more than 30 percent in the United Kingdom since 1920. Ireland’s smallish houses are built at the same time that the nation emerges as the most affluent in the European Union excepting Luxembourg. At the same time, houses in Australia, Canada, New Zealand and the United States have continued to increase in size. Meanwhile, over the last 20 years, the average new detached house in Australia and New Zealand has increased by an amount to the average total size of a house in United Kingdom.
There appears to be a general unawareness of these differences, at least in the United Kingdom. For example, Richard (Lord) Rogers, who chaired the UK Government Urban Task Force has written:
The British are extravagant with land. We insist on building as if we lived in the American Midwest or the Australian outback. The US builds on average 40 dwellings for every hectare … in Britain, we erect 23 new buildings for every hectare ...
In fact, average house lots are much larger in the United States (and Australia, Canada and New Zealand) than in the United Kingdom. In the United States, new detached houses are built at 2.7 per acre (6.6 per hectare). In Australia, new detached houses are being built at 5.5 per acre (13.3 per hectare). By comparison, in the United Kingdom, new houses were built at an average of 16 per acre (40 per hectare) in 2005. Future lot sizes are likely to be even smaller in Dublin, where present zoning calls for 20 houses per acre (49 per hectare) an increase of 35 percent in just four years. Seven Dublin houses or six United Kingdom houses could be built on the average new house lot in Australia.
Indicating a similar misunderstanding, the Times of London wrote that an objective of an Essex County plan was:
…to persuade builders to provide big family apartments on the continental model, rather than large numbers of small detached houses.
In fact, much of recently built housing stock in many continental (Western Europe) markets is detached. For example, single family houses comprise two-thirds of new house construction in France. The United Kingdom has some of the most tightly packed suburbs in the high-income world, nearly double that of Western Europe and one-half greater than in Japan.
Value for Money: New houses, adjusted for size differences, are more than twice as costly relative to incomes in Ireland and the United Kingdom compared to Australia and New Zealand. New houses in Ireland and the UK are four to five times as costly compared to affordable markets such as Indianapolis and Winnipeg (Figure 8).