Understanding U.S. Housing Affordability
National Trends in Home Prices, Mortgage Rates & Buyer Purchasing Power
The housing affordability index is one of the most important indicators for understanding whether homeownership is within reach for the average American family. Published by the National Association of Realtors, this national index combines three critical factors – median home prices, current mortgage rates, and median household income – into a single number that measures how easily a typical family can qualify for a home loan. A reading above 100 means the median-income household earns more than enough to qualify; below 100 means they fall short. On this page, we break down the latest U.S. housing affordability data alongside median home sale prices and 30-year fixed mortgage rates so you can see how these national trends connect and what they mean for buyers in the Phoenix-Mesa real estate market.
The Housing Affordability Index is published quarterly by the National Association of Realtors and measures whether a typical family earning the median income can qualify for a mortgage on a median-priced home. You can learn more about how the index is calculated and what it tracks on the NAR’s official methodology page.
Housing Affordability Index
National Data – United States Average
How to Read the Index
A value of 100 means a family earning the median income has exactly enough to qualify for a median-priced home. Above 100 = more affordable. Below 100 = less affordable. The higher the number, the easier it is to qualify.
What Drives This Number?
Three factors: home prices, mortgage rates, and household incomes. Even if prices rise, falling rates can improve affordability. And rising incomes can offset both. This index captures all three variables in a single metric.
Mesa Context
Mesa’s housing market is heavily influenced by migration from higher-cost states like California. As home prices and rates shift nationally, this index reflects how those changes affect a typical household’s ability to qualify for a mortgage.
U.S. Median Home Sales Price
National Data – United States Average
What This Chart Shows
The median sales price represents the midpoint of all U.S. home sales – half sold for more, half for less. It’s a reliable snapshot of where the national housing market stands, without being skewed by luxury or distressed sales.
Mesa vs. National Prices
Mesa’s median home price often tracks close to the national figure, but local supply, seasonal snowbird demand, and new construction activity can push it higher or lower. Compare this national trend to your neighborhood’s reality.
Seasonal Patterns
National median prices typically show seasonal fluctuations – higher in spring and summer when more families are shopping, and softer in fall and winter. Mesa follows a similar pattern, with additional influence from winter visitor demand.
U.S. 30-Year Fixed Mortgage Rate
National Data – United States Average
How Rates Affect Affordability
On a $400,000 loan, each 1% rate increase adds roughly $240/month to your payment – or $86,000 over 30 years. Rates are often the single biggest variable in what a household can afford, sometimes more impactful than the purchase price itself.
Rate Trends to Watch
Mortgage rates follow the 10-year Treasury yield more closely than the Fed funds rate. When bond yields fall (often during economic uncertainty), mortgage rates tend to follow. This chart helps you track those trends over time.
Historical Perspective
The 30-year fixed rate averaged around 3% during 2020–2021 and climbed above 7% in 2023. Historically, rates between 5–7% are considered normal. This long-term view provides context for where current rates stand relative to decades of data.
National Association of Realtors, Housing Affordability Index (Fixed) [FIXHAI], copyright 2016, reprinted with permission. U.S. Census Bureau and U.S. Department of Housing and Urban Development, Median Sales Price of Houses Sold for the United States [MSPUS]. Freddie Mac, 30-Year Fixed Rate Mortgage Average [MORTGAGE30US], copyright 2016, reprinted with permission. U.S. Census Bureau, Real Median Household Income in the United States [MEHOINUSA672N]. Retrieved from FRED, Federal Reserve Bank of St. Louis.
The Employment Dashboard
Jobs data shapes everything from Fed policy to mortgage rates. Our Employment Dashboard tracks payroll growth, unemployment trends, and labor force participation using live data from the Bureau of Labor Statistics, so you can see how the job market is moving and what it means for housing affordability right now.
Does Inflation
Hurt Your Home Value?
Inflation affects more than just gas and groceries, it reaches into every corner of homeownership. Property taxes climb as assessed values rise, insurance premiums adjust to higher replacement costs, and routine maintenance gets more expensive each year.
Have You Explored The Home Price Index?
Home values in the Phoenix-Mesa metro don’t always move in sync with the rest of the country. Our Home Price Index page tracks the FHFA House Price Index for the local market alongside the national median sales price, so you can see how the valley’s appreciation compares to the broader U.S. trend.
National data provides a valuable benchmark for understanding where the broader housing market stands, but it’s the local trends in Mesa, Chandler, and the greater Phoenix metro that will directly shape your real estate decisions. Whether you’re determining the right list price for your home, deciding how aggressively to structure an offer, or timing your next move based on where the market is heading, it’s the trajectory of the local market that matters most. National averages can mask significant regional differences, and what’s happening at the metro level often tells a very different story. At Red Penny Realty, we track these local and national data points side by side so our clients always have the full picture. We use this information to guide pricing strategy, negotiate from a position of knowledge, and help you make confident, well-informed decisions whether you’re buying or selling in today’s market.