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Nearly 70 per cent of British Columbian households own their home. A relatively minor 10 per cent negative shock to home prices would extinguish $90 billion of their wealth, or $70,000 of the average homeowner’s equity. While some may see this as a paper loss, it will have a significant impact on the economy, as declining household wealth reins in consumer spending. Retail sales would suffer, with an estimated $1.8 billion in forgone revenue in the first year after the shock.

Home construction activity would fall dramatically. Home builders would cut back production 25 per cent; that’s 10,000 fewer housing starts in the first year alone. A negative price shock would markedly slow the expansion of the housing stock, creating even more critical housing supply problems down the road.

Across the economy, a negative home price shock will slow growth. Tens of thousands of jobs will be forfeited. The unemployment rate will shoot up. A 10 per cent negative price shock will slow real GDP growth to 1.5 per cent from a baseline of 2.7 per cent. That’s $3 billion in lost activity. If home prices fell 35 per cent, a level some activists are championing, the BC economy would collapse into recession. The average home owner would have lost $245,000 in equity, housing starts would fall by half, 64,000 jobs would be forfeited – sending the unemployment rate to 7.5 per cent with $4.4 billion in forgone retail sales and a colossal $8 billion loss to GDP in the first year.

This analysis does not account for the negative impact on provincial tax revenues, expanding deficits, ballooning debt and credit downgrade risks.

Think seriously about what you want when asking the government to intervene in a market system. You are playing with fire. Loss of GDP has an extremely long tail of destruction.