Relaxed Constraints

Housing Affordability: Introduction

How do you create affordability in a system where a decrease in asset prices is seen as a failure?

Housing affordability has become one of the defining economic issues of the current political cycle. The United States faces a supply constraint which dates back to a pull-back in lending post-GFC. Years of constrained housing starts, rising regulatory burdens, and labor shortages have casued a decline in long-run elasticity.

At the same time, today’s affordability pressures are being amplified by elevated mortgage rates. The rapid rise in financing costs has dramatically increased monthly payments, even in markets where home prices have moderated. This rate-driven shock has layered on top of an already tight supply environment, making affordability conditions appear even more severe.

With the midterm elections approaching, policymakers have responded with a series of initiatives that predominantly stimulate housing demand. While demand-side stimulus can be effective in certain environments, history suggests that in supply-constrained markets such measures risk pushing prices higher rather than increasing housing availability. Housing presents an interesting balance. Many homeowners have upwards of 40% of their net worth tied up in home equity, so any decline in housing prices would significantly impact a large portion of home-owning consumers. Trump has said he “wants to drive house prices up,” yet at the same time is pushing to make homes more affordable for first-time buyers through lower interest rates.

Last Monday, the Housing for the 21st Century Act (H21 Act) was approved by the House. Unlike many recent proposals, this bill has the potential to address underlying supply-side constraints, particularly those related to lending requirements, rather than simply expanding purchasing power.

In subsequent articles, I will examine the risks of demand-side incentives, evaluate whether the H21 Act represents a meaningful step toward improving long-term affordability, and outline my predictions for the performance of homebuilders, mortgage providers, and suppliers in 2026.

Current policy landscape:

Policy NameActorIncentive
Fannie/Freddie $200B MBS PurchasesTrump AdministrationDemand
Executive Order Restricting Institutional InvestorsTrump AdministrationDemand
Higher Conforming Loan Limits (FHFA)FHFA / Federal Housing AgencyDemand
Housing for the 21st Century Act (H.R. 6644)CongressSupply
American Homeownership Opportunity Act (H.R. 3475)CongressBoth (Demand + Supply)
30-Year Fixed Mortgage Rate
While we have seen an 80bp YoY decrease in the 30yr rate, many people are priced out or "locked in" to their current mortgage contracts. Each additional percentage point on a median borrower's mortgage rate translates to an additional $2,000 in annual mortgage payments. For each additional point of the "lock-in" effect (current mortgage rate minus locked-in rate), the probability of moving is reduced by 16%.
Housing Starts
Illustrative of the degree in pull-back post GFC. Growth has remained sluggish since 2022 due to the rate environment.
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