The math behind the American assumption that owning a home is the surest path to building wealth has been quietly falling apart. Between December 2015 and December 2025, the Case-Shiller home price index rose 87 percent nationwide, while the S&P 500 climbed 235 percent over the same stretch, excluding dividends. A gap that wide is prompting a growing number of younger Americans to rent and put their savings into the market instead.
The gap keeps widening
This year has only sharpened the contrast. Home prices are up just 1.5 percent nationwide so far in 2026, while the S&P 500 has climbed 13 percent over the same period, even as the average 30 year mortgage rate sits above 7 percent. National forecasts for full year 2026 home price growth cluster around 1 to 2 percent, below the roughly 3 percent long run historical average, while the S&P 500 has averaged closer to 10 percent annually since its 1957 inception.
Renting is now cheaper almost everywhere
A March 2026 analysis from Realtor.com found that renting now costs less than buying in all 50 of the largest United States metro areas, a striking reversal from the long held assumption that owning inevitably builds more wealth over time than renting does.
Sellers are already blinking
The buyer's market is showing up in real numbers too. Sellers offered concessions in 44.7 percent of home sales in August, according to Redfin data, with incentives ranging from mortgage rate buy downs and free appliances to price cuts and packages worth 10,000 to 20,000 dollars or more, occasionally including extras like an all expenses paid cruise. Redfin chief economist Daryl Fairweather has argued those concessions amount to a hidden price decline that official figures do not fully capture. If we were to quantify all these concessions, she said, we would see that home prices are down, and people are getting better deals. Sun Belt markets including Atlanta and Charlotte face the most pressure to offer incentives, a legacy of a post pandemic construction boom that outpaced actual demand.
Two decisions, bundled into one
Economists Ray Fisman of Boston University and Michael Luca of Carnegie Mellon argue that buying a home actually bundles two separate decisions people rarely evaluate on their own terms, where to live and how to invest their savings. The mortgage that lets a buyer control an asset worth many multiples of their down payment magnifies both gains and losses through leverage, while the home itself remains an illiquid, undiversified bet on a single property in a single location, unlike a stock portfolio that can be diversified and sold in seconds.
The rent-versus-buy decision involves real trade-offs that too often go unrecognized, especially by those who can comfortably afford to buy.
None of this means renting is automatically the smarter move for everyone. It strips out factors that have nothing to do with returns, like the stability of a fixed housing cost or the forced savings discipline that a mortgage payment provides. But after a decade in which stocks have outpaced home prices by this wide a margin, the argument for treating a house as a straightforward wealth building vehicle has become considerably harder to make by default.
