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Aziz Sunderji's avatar

Excellent post.

But does it make sense to look at everything in nominal terms?

Sure, deflating incomes and housing costs by the same factor wouldn't change your analysis. But your analysis is not taking into account non-housing costs, which matter if we are concerned with housing affordability.

For example, even if housing costs and incomes are rising at the same pace, if non-housing costs are soaring, then housing is still becoming less affordable—it's taking up a rising share of household incomes post food, car, clothing, and other necessities.

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BenW's avatar

Thought experiment in real dollar terms, likely wrong:

You're an apple farmer in a 1980 economy that only consumes apples. Apples are $1 (high quality apples) a pop and you farm 100 of them a year.

A house is going for 250 apples today (1980), so $250 dollars. You head to the bank for that full $250 mortgage.

They say, hey, inflation expectations are high right now at 17% so the mortgage rate is 20%, paid annually, but if you're still interested we can offer you something over 25 years.

Shoot, you say, looking at your early MS Excel prototype model, that's $50.5 dollars/apples a year, half my current income this year! But then you notice - with inflation, that'll only be 43 apples at the year 1 payment, 37 at y2, 23 apples at y5, etc. In apple terms, the payment is dropping by over 14% apples a year. In ten years, the NPV of my mortgage will just be 49 apples, payments just 10 apples.

Loan payments in high inflationary environments need to be really front loaded because everything later in time gets nulled; the first payment amount might be high but it becomes nominal quick. In terms of your output, you'll be spending 290 apples over the mortgage term at this 20/17 scenario. Quite a bit better than paying 2x higher priced (600+) at a lower interest rate in 2022, unless you think there is something countervailing going on with opportunity cost.

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