Housing starts collapse: a leading indicator of internal slowdown

Housing starts, considered a leading indicator of demand and the health of the housing market, fell sharply by 9.8% year-on-year in August — far beyond analysts’ expectations of a more moderate 5.2% decline. The steep drop highlights a slowdown in private investment in construction, potentially signaling a hit to household purchasing power, reluctance to commit to long-term obligations, and structural challenges such as a shrinking population and rising costs of raw materials and imports due to a weak yen. If the trend continues, it is expected to exert downward pressure on employment in the construction sector and on the consumption component of growth.

Yen weakness: competitive and import-related effects

The USD/JPY exchange rate stands at around 147.84, with the dollar appreciating roughly 40% against the yen over the past five years. A weak yen theoretically benefits exporters — making their goods cheaper in dollar terms — but on the other hand, it raises import costs and fuels higher prices for energy and raw materials. The burden of yen weakness is particularly evident in industries dependent on imports (energy, raw materials), posing a negative inflationary risk, pressuring household incomes, and eroding profitability for companies reliant on global supply chains.

The BOJ’s monetary challenge

The Bank of Japan (BOJ) faces a difficult position: the 2% inflation target has historically proven elusive after decades of deflation, keeping monetary policy loose and interest rates near zero. Now, the currency’s weakness against the dollar and a drop in domestic demand complicate the BOJ’s choices between two extremes: maintaining zero interest rates to support inflationary recovery, or attempting to stabilize the yen by shifting policy — a move that could disrupt markets and harm the export sector. In addition, any attempt at direct intervention in the FX market could be perceived as politically motivated, increasing uncertainty.

Possible fiscal and monetary measures

Fiscal incentives: The government may expand housing incentives and private investment support to stimulate construction and domestic demand.

FX market intervention: There is potential for intervention if yen depreciation accelerates, though this tool carries political and economic risks.

BOJ policy adjustment: The BOJ will need to balance continued support for inflation with sending a clear signal to markets regarding normalization — a move difficult both in communication and implementation.

Conclusion: approaching an economic crossroads

The sharp decline in housing starts in August, combined with yen weakness, highlights structural issues and a lack of economic confidence. Japan now faces a dual test: how to stimulate domestic demand while stabilizing its currency, without undermining growth resilience or signaling policy inconsistency. The measures taken in the coming days — from fiscal incentives to BOJ decisions — will determine whether Japan can return to a path of stable growth or remain stuck in a state of prolonged imbalance.