Erdmann Housing Tracker · Housing & Cities
TIER 4 Mon, 8 Sep 2025 18:04:26 +0000
A Housing Shortage Reduces Cyclicality
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Here I'm going to walk through various aspects of the new business cycle. As with the earlier post on rental supply, I am sort of thinking aloud here, so forgive me if there ends up being an incongruity here or there. This is a market that has changed fundamentally. We have a choice: (1) Learn what that means on many dimensions in real time, or (2) misunderstand every trend in the market because of outdated presumptions. Studying some historical period of housing that shared our current conditions to confidently model today's market isn't an option because I don't think there is a historical precedent to today's American housing market, and if there was, there isn't likely to have good data.
I will build the table of contents as I finish the series:
Review of 2008 vs Today (free post from 2024)
Introduction
Part 1: A Housing Shortage Reduces Cyclicality
Part 2: What about 2008?
I think that one reason the 2001 recession was relatively light was because residential investment is a leading cyclical component in the economy, and there wasn't an up-cycle in the 1990s. In previous decades, residential investment would top out at 5% or more of GDP (4.3% in the 1980s) and then decline to 3% or 4% leading into recessions. Residential investment never even recovered to 4% in the 1990s.
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Figure 1
By the year 2000, the cyclical process of managing housing expenditures had flipped. In the 20th century housing expenditures were real expenditures. When American incomes cyclically slowed down, American families built fewer homes. By the year 2000, marginal housing expenditures were inflationary - rents on land. In that context, spending less on housing requires building more.
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(C) 2025 Kevin Erdmann
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