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Monetary Policy & Housing

Housing is the most interest-rate-sensitive asset most households will ever own. A decade of near-zero policy rates and $8 trillion of asset purchases did not leave it untouched.

The short answer

Monetary policy does not build or demolish a single house. It changes what a given house costs per month, and therefore what buyers can bid. When the Federal Reserve held rates near zero and bought mortgage-backed securities at scale, it lowered the monthly cost of a fixed quantity of housing. With supply constrained by the rules described in Zoning & Land Use, the extra purchasing power went almost entirely into price.

Home prices rose 53.8% from 2020. That was not a supply response. It was a demand response to cheap money meeting a market that could not build.

The demand was pulled forward, not created

Ultra-low rates did not add households. They moved purchases earlier in time. Buyers who would have transacted in 2024 or 2025 transacted in 2021 instead, at prices bid up by everyone else doing the same thing. When rates normalized, the demand that would have supported the market had already been spent. The buyers left behind faced both the higher price and the higher rate.

That is the payment shock: the same house, financed at 6% instead of 3%, against a price set when money was free.

Lock-in: the supply side of a demand policy

The least anticipated consequence was a supply effect. Millions of owners hold mortgages at rates they can never replace. Moving means surrendering a 3% loan for a 6% one, so they do not move. FHFA data put the shortfall at roughly 1.72 million missing home sales.

This is why the existing-home market froze without a recession: the constraint is not willingness to sell, it is the price of the mortgage the seller would have to take on next. A demand-side policy ended up throttling supply.

Why the Fed cannot simply cut

Shelter is the largest single component of the Consumer Price Index, and it enters with a long lag through owners' equivalent rent. That lag means yesterday's housing inflation is still arriving in today's CPI print, which keeps measured inflation elevated, which keeps policy tight, which keeps mortgage rates high, which prevents the building that would ease shelter costs.

The loop is uncomfortable for everyone: the instrument that would relieve housing costs is held hostage by a lagging measure of housing costs.

The cluster

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