Elgin, Illinois Home Prices Rose 10.8% This Year. Austin's Fell 6.9%. Federal Data Confirms the Great Reversal.

The Sun Belt Playbook Just Broke — and the Federal Government Has the Receipts

For five years, the investor consensus was simple: go where the people are going. Migration to Texas, Florida, and the Mountain West drove the fastest price appreciation in modern history, and every "best markets" list pointed the same direction — Austin, Phoenix, Tampa, Cape Coral.

That consensus just inverted. FHFA's Q1 2026 House Price Index, released May 26, shows the fastest-appreciating housing markets in America right now aren't in the Sun Belt at all. They're in Illinois, the Northeast, and pockets of the industrial Midwest — while Austin just posted the steepest annual price decline of any major metro in the country.

This isn't a hot take from a contrarian newsletter. It's the same federal purchase-only price index that underwrites conforming mortgages nationwide, pulled from actual closed transactions, not listings or sentiment surveys. And it lines up with what NAHB's Eye on Housing found digging into the metro-level detail the same month, and what Scotsman Guide is reporting on the rental side: the Midwest isn't just holding up on price. In several metros, it's beating the Sun Belt on cash flow too.

It also lands at a moment when financing math matters more than usual. Mortgage rates briefly dipped to a six-week low of 6.43% in early July on Iran ceasefire optimism, pulled pending sales up 6.3% year-over-year, then snapped back to nearly 6.9% within days as the 10-year Treasury climbed on hawkish Fed signaling. When rates whipsaw like that, the deals that still cash-flow at the higher number are the ones worth chasing — which makes this appreciation-versus-yield split even more relevant today than it would be in a stable-rate environment.

What the FHFA Numbers Actually Show

Nationally, home prices rose 1.7% year-over-year and 0.5% quarter-over-quarter in Q1 2026 — modest, unremarkable. The state and metro breakdown underneath that number is where it gets interesting.

Illinois posted the largest annual gain of any state at 7.3%, followed by Alaska (5.5%), Vermont (4.9%), and Connecticut and Kentucky (4.7% each) — four of the five top-performing states sit in the Northeast or industrial Midwest, not the Sun Belt migration corridor investors have been chasing since 2021. At the metro level, Elgin, Illinois — a Chicago exurb, not a resort town — led all major metros at 10.8% annual appreciation. On the other end: Colorado posted the largest state-level decline at -2.4%, and eight states plus D.C. saw prices fall outright. Austin-Round Rock-San Marcos, Texas posted the steepest metro decline in the country at -6.9%.

Zoom out to the census-division level and the pattern holds: the East North Central division (Illinois, Indiana, Michigan, Ohio, Wisconsin) posted the strongest regional appreciation at 4.4%, while the West South Central division (Texas, Oklahoma, Arkansas, Louisiana) was the weakest, down 0.7%. NAHB's analysis of the same dataset found roughly a third of the 100 largest metros posted outright declines — with Cape Coral-Fort Myers, Florida among the persistent laggards.

None of this is a new pressure building overnight — it's the continuation of a shift Fortune first flagged back in April, when former boom markets started correcting as 2021-2022 overbuilding caught up with softening migration. What's new is that it's now showing up in the government's own benchmark index, not just anecdotal metro comparisons — and it's held for two consecutive quarters, not a one-off blip.

The Numbers: Appreciation and Cash Flow Are Pointing the Same Direction

Here's what makes this more than a "where prices are rising" story: the Midwest metros posting the strongest appreciation are also delivering some of the best cash-on-cash math in the country. Scotsman Guide reports Cleveland running gross rental yields near 9.8–10%, and Cook County, Illinois — the Chicago metro Elgin sits inside — projected at roughly 9.8% for 2026. Compare that to the national median rent-to-price ratio, which puts most markets in the 150-165 range versus 90-145 for genuine cash-flow markets, and the Midwest is doing both jobs at once: appreciating and cash-flowing.

That's a combination Sun Belt markets built their entire investor pitch around for the last five years and, per this data, currently aren't delivering in several of their flagship metros.

One caveat worth pricing in before you wire a deposit to Illinois: property taxes. Effective rates in Texas and Illinois run 2.0-2.7%, versus 0.4-0.9% in Ohio, Alabama, Tennessee, and Mississippi. On a $200,000 property, that's a $2,500-$3,500/year swing in carrying cost — enough to erase a chunk of the appreciation edge if you don't run the full math. Illinois also carries some of the more tenant-protective landlord-tenant statutes in the Midwest, which changes your eviction and turnover timeline math versus Ohio or Indiana.

Common Mistakes Investors Make Here

• Running the 2021 playbook on autopilot. "Go where people are moving" was a great rule three years ago. The data says it's not the rule anymore — at least not in Austin, Cape Coral, and their Sun Belt peers.
• Buying Illinois for the headline number without pricing in property tax. A 7.3% state-level appreciation average doesn't survive contact with a 2.5% effective tax rate if you didn't underwrite it going in.
• Treating a state number as a metro number. Illinois's headline gain is disproportionately a Chicago-exurb story (Elgin +10.8%). Downstate Illinois isn't Elgin. Always drill to metro, not state.
• Chasing appreciation and ignoring cash flow, or vice versa. The whole point of this data is that a handful of Midwest metros are delivering both. Screening for only one variable means you're leaving the better deal on the table.

How to Use PropGPT for This

The whole value of this data is worthless if you can't turn it into a specific deal search. Here's how to run it in PropGPT:

"Find single-family and 2-4 unit properties in Cook County, IL and Cuyahoga County, OH under $250,000 with estimated gross rental yield above 8%." This screens directly for the two metros this article flags for the appreciation-plus-cash-flow overlap, with a hard yield floor so you're not just buying the narrative.

"Compare estimated property tax burden, insurance cost, and net cash flow for a $200,000 rental in Elgin, IL versus Cleveland, OH versus Indianapolis, IN." Runs the exact property-tax-adjusted math this article flags as the thing most investors skip before buying into a "hot" state number.

"Pull 12-month price trend and days-on-market for zip codes within the Elgin, IL metro, sorted by appreciation rate." Drills a state-level headline down to the submarket level, so you're not assuming the whole state — or even the whole metro — is uniformly hot.

"Show me metros where FHFA-tracked home prices rose over 4% in the past year AND estimated rent-to-price ratio is under 145." A direct, repeatable screen for the "wins on both fronts" pattern this article describes — rerun it monthly as new data lands.

"Find distressed or price-reduced listings in Austin, TX and Cape Coral, FL — the two metros with the steepest FHFA price declines — where estimated cash flow is still positive at today's rates." Flips the story: if Sun Belt sellers are capitulating on price, some of those markets may now be pricing in enough discount to make the math work again. This checks whether that's actually true today, deal by deal.

The Bottom Line

The Sun Belt migration story was real, and for a few years, it was the correct trade. The federal government's own price index says that trade has quietly flipped: the fastest-appreciating markets in the country right now are Chicago exurbs and Northeast metros, not Austin and Cape Coral, and in several Midwest metros the cash flow math is winning too. That doesn't mean abandon the Sun Belt entirely — some of those markets are now correcting hard enough to become genuine buying opportunities for investors willing to underwrite the discount. It means stop running searches based on a five-year-old narrative and start running them on this quarter's data. Pull up PropGPT, run the Cook County/Cuyahoga County screen above, and see what's actually there.