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For more than forty years Britain has relied upon rising house prices as a substitute for genuine economic growth. As manufacturing declined and debt expanded, housing became not merely somewhere to live but the principal store of household wealth. Millions of people came to believe that their future security depended upon the continual rise in the value of their homes.

The recent concern that Britain’s housing wealth may be in danger of collapsing raises a much deeper question. What happens if the economy itself continues to shrink?

In a shrinking economy, the fundamental assumption behind ever-rising house prices begins to weaken. Housing values ultimately depend upon what future buyers can afford to pay. If incomes stagnate, secure employment becomes scarcer, borrowing becomes more difficult and younger generations possess less disposable income, the pool of buyers capable of sustaining high prices gradually contracts.

This does not necessarily mean a sudden crash. More likely is a long period of stagnation in which house prices fail to keep pace with inflation. In nominal terms prices may appear stable, but in real terms housing wealth steadily declines year after year. Britain may already be moving in this direction.

A shrinking economy would also change the role of housing itself. During the growth era, property functioned as an investment asset. People expected capital gains. Buy-to-let investors expected rising values. Governments quietly welcomed rising house prices because they created a feeling of prosperity.

However, if economic growth disappears, housing increasingly reverts to its original purpose – shelter.

That change could have profound consequences.

The first consequence would be psychological. Much of Britain’s middle-class security is tied to property values. Pension planning, inheritance expectations and retirement assumptions all depend upon housing wealth remaining high. If prices stagnate or fall, many households may discover that what appeared to be wealth was largely a paper valuation dependent upon continuous market optimism.

The second consequence would be political. Governments have repeatedly intervened to support house prices through low interest rates, mortgage schemes and planning restrictions. Yet in a shrinking economy governments themselves become poorer and more indebted. Their ability to support asset prices weakens. Eventually economic reality may become stronger than political intervention.

The third consequence concerns localism.

If housing ceases to be viewed primarily as an investment, local communities may begin to think differently about land and property. The emphasis shifts from maximising exchange value to maximising usefulness. Empty buildings become potential workshops, local enterprises, food production facilities or housing for younger families. Land ceases to be merely a financial asset and becomes part of the productive life of the locality.

This would represent a major cultural shift. For decades Britain has measured success through rising property values. Yet from the perspective of a shrinking economy, permanently rising house prices are actually a sign of increasing unaffordability and growing dependence upon debt.

The irony is that falling or stagnant house prices may be painful for those who expected continual gains, but beneficial for future generations seeking somewhere to live. Many younger people already regard high housing costs as one of the greatest barriers to family formation, financial security and independence.

If the shrinking economy continues, Britain may eventually be forced to choose between preserving housing as a speculative investment or restoring it as an affordable necessity.

The housing market was built during an age of growth, expanding credit and rising consumption. If that age is ending, then housing wealth may no longer behave as it did before.

In that case, the future may not be a dramatic collapse, but something perhaps more significant – the slow transformation of housing from a financial asset back into a home.