The Price-to-Income Ratio: A Smarter Way to Measure Housing Market Affordability

A reporter recently posed a question to me that seemed simple on the surface: "Is now a good time to buy real estate?" I told her what I always tell clients when they ask that question: it depends entirely on which market you're comparing, and you need a common unit of measurement to make that comparison meaningful.

That's where the price-to-income ratio comes in. It's one of my favorite lenses for evaluating housing markets because it strips out the distortion of high nominal prices and answers the real question: can the people who live here actually afford to buy here?

How to Calculate It

The calculation is straightforward. Take the median home price in a given market and divide it by the median household income. The result is the number of years of income it would take to buy the median home.

Historically, a healthy housing market has a price-to-income ratio of 3 to 4. That means a family earning the local median income could theoretically buy the local median home for three to four times their annual earnings. That used to be the norm in most American cities.

A price-to-income ratio above 5 means the average household in that market cannot afford the average home. Many cities are now well above that.

What Current Ratios Reveal

In many coastal cities, the price-to-income ratio has climbed above 10, meaning the median home costs more than ten years of the median household's gross income. Markets like Los Angeles, San Francisco, and New York have ratios that put homeownership functionally out of reach for most residents without significant outside capital.

Sunbelt markets that were considered affordable five years ago, Phoenix, Austin, Tampa, have seen their ratios rise sharply as remote work demand and investor activity drove price appreciation faster than income growth.

How Investors Should Use This Metric

For real estate investors, the price-to-income ratio does something price-alone analysis can't: it signals where organic demand is sustainable. In a market where locals can't afford to buy, rental demand tends to stay strong, which matters for occupancy and rent growth. In a market where the ratio has temporarily spiked due to investor activity, prices may be more vulnerable to correction if demand softens.

High price-to-income ratios often signal strong rental demand, the people who can't buy still need a place to live.

Don't Just Look at the Price

When a client asks me whether a market is expensive, I don't just pull up the median home price. I want to know the income context. A $400,000 home in a market where households earn $120,000 is more affordable than a $300,000 home where households earn $55,000. The price-to-income ratio captures that distinction. It's a more honest comparison.