Housing and the Economy
Why housing matters far more to the economy than its share of GDP suggests: how it enters the national accounts, why construction swings so hard, how mortgage rates reach buyers and sellers, the lock-in effect, home prices and household wealth, and housing's record as an early warning of recessions.
The short version
Building homes is only about 4% of US GDP, but it's the most rate-sensitive part of the economy and one of the most volatile. Housing starts fell from 2.27 million a year in January 2006 to 478,000 in April 2009. A study of US recessions found residential investment to be the best early warning among the parts of GDP. Mortgage rates set what buyers can afford: the payment on a $400,000 loan is about $1,690 a month at 3% and $2,770 at 7.4%. Because most US mortgages are fixed, higher rates also lock owners into their homes, which an FHFA study found prevented 1.72 million sales and raised prices.
By the end of this lesson, you'll be able to
- Explain how housing enters GDP and why residential investment swings more than the rest of the economy
- Show how mortgage rates affect affordability and explain the lock-in effect of fixed-rate mortgages
- Describe housing's role in household wealth and its record as an early warning of recessions
Why this matters
US households own homes worth about $54 trillion, and home mortgages make up about two thirds of everything they owe.1 Housing links interest rates to spending, construction, and household wealth. An economist who studied the US recessions since the Second World War concluded that, of the components of GDP, residential investment offers by far the best early warning of an oncoming recession.2 Knowing how housing works helps explain rate decisions, bank risks, and the business cycle.
Where housing shows up in GDP
Housing enters the national accounts in two places.3
- Residential investment. Households' purchases of new homes are counted as investment, alongside businesses' purchases of equipment and structures. Sales of existing homes aren't, since those homes were produced in earlier years.
- Housing services. Consumer spending includes the housing services people consume, both rent paid by tenants and an imputed value for homeowners who live in their own homes, so that GDP doesn't change when a home switches from rented to owned.
Residential investment has averaged about 4.6% of GDP since 1947. It reached 6.7% at the end of 2005, fell to 2.4% in mid-2010, and was 3.6% in mid-2026.4 A part of the economy that small can still drive the cycle because it moves so much.
| Month | Starts |
|---|---|
| January 2006 | 2,273,000 |
| April 2009 | 478,000 |
| 2025, monthly average | 1,356,000 |
| August 2026 | 1,275,000 |
Census Bureau figures.5 Construction of new homes fell by almost four fifths in just over three years.
The rest of this lesson is for members
Still to come in this lesson: Mortgage rates and affordability, Home prices and household wealth, Housing and the cycle, the key takeaways, and 2 quiz questions with explanations.
Membership opens every lesson in the curriculum, the capstone projects, the interactive tools, and the members-only channels in the Hyperion Entities Discord. The first lesson of every module stays free.
Go deeper
- GDP and How It Is MeasuredEconomics for Investors (depth track)
- Mortgage-Backed and Asset-Backed SecuritiesFixed Income in Depth (depth track)
- Measuring Inflation: CPI and PCEEconomics for Investors (depth track)
- REITsPart 2: What You Can Own
Notes and sources
- Federal Reserve Bank of St. Louis (FRED), from the Board of Governors of the Federal Reserve System (Financial Accounts of the United States). Households and nonprofit organizations: owner-occupied real estate at market value (HNOREMQ027S), home mortgages (HHMSDODNS), and total liabilities (TLBSHNO), quarterly. Checked 2026-10-14. Back to text
- National Bureau of Economic Research. Edward E. Leamer, Housing IS the Business Cycle, Working Paper 13428 (September 2007). Checked 2026-10-14. Back to text
- U.S. Bureau of Economic Analysis. Measuring the Economy: A Primer on GDP and the National Income and Product Accounts (December 2015). Checked 2026-10-14. Back to text
- Federal Reserve Bank of St. Louis (FRED), from the U.S. Bureau of Economic Analysis. Private Residential Fixed Investment (PRFI) and Gross Domestic Product (GDP), quarterly. Checked 2026-10-14. Back to text
- Federal Reserve Bank of St. Louis (FRED), from the U.S. Census Bureau. New Privately-Owned Housing Units Started: Total Units (HOUST), monthly, seasonally adjusted annual rate. Checked 2026-10-14. Back to text
- Federal Reserve Bank of St. Louis (FRED), from Freddie Mac. 30-Year Fixed Rate Mortgage Average in the United States (MORTGAGE30US), weekly. Checked 2026-10-14.
- Federal Housing Finance Agency. Ross M. Batzer, Jonah R. Coste, William M. Doerner, and Michael J. Seiler, The Lock-In Effect of Rising Mortgage Rates, Working Paper 24-03 (revised August 2024). Checked 2026-10-14.
- Federal Reserve Bank of St. Louis (FRED), from the Federal Housing Finance Agency. All-Transactions House Price Index for the United States (USSTHPI), quarterly. Checked 2026-10-14.