36% of Your Paycheck, and the $15,000 Nobody Mentions

Thirty-six percent. That’s the share of a typical American family’s income now going to the mortgage on a median-priced existing home, according to the NAHB Cost of Housing Index released this month. Last quarter it was 32%. A four-point jump in ninety days is not a drift — it’s a lurch.

And yet in Wheaton, ZIP 60187, homes are still going in about 25 days at a $575,000 median list price, good enough for No. 10 on Realtor.com’s hottest ZIP codes list for 2026. Both of those things are true at once, and if you’ve been trying to buy a house in DuPage County this summer, you’ve probably felt the contradiction personally.

What the 36% actually measures

The NAHB index is a national number built on national inputs: a median existing-home price of $434,900, a median family income of $106,800, and an average 30-year rate of 6.51% for the second quarter, up from 6.20% in the first. That rate move is most of the story. Prices didn’t have to do much; the financing did the damage.

For families earning half the median, the picture is uglier — 71% of income for an existing home, up from 65%. That’s not a housing payment. That’s a housing situation.

Here’s the part that matters locally, though: we are not a national market. The median existing-home price nationally is $434,900. In DuPage, in most of the townships around Bartlett and Carol Stream and Bloomingdale, you are shopping above that. Wheaton’s $575,000 median list is roughly a third above the national median. So the honest read for Chicagoland’s western collar is that the 36% figure is a floor, not a forecast, unless your household income runs well above $106,800 — which, to be fair, plenty of DuPage households do.

Why the hot list and the affordability crunch aren’t contradicting each other

It looks strange that a market can be both punishingly expensive and moving in 25 days. It isn’t. Realtor.com’s own framing on this year’s top ZIPs is that buyers are paying up for space and established character within commuting distance of a job center. Every one of the top ten sat in a suburban corridor like ours.

What that means on the ground in Bartlett, Streamwood, Hanover Park, and Carol Stream is a two-tier market. The well-priced, move-in-ready three-bedroom with a real yard still draws a crowd, because the buyers competing for it already cleared the affordability hurdle — they’re the ones with equity from a prior sale or a household income that absorbs 6.5% money. Meanwhile the first-time buyer looking at the same street is doing arithmetic that stopped working in April.

Speed and affordability are measuring different people.

The $15,000 that most local buyers never ask about

This is the part I’d rather you take away than any index number. The Illinois Housing Development Authority runs a program called IHDAccess Home that pairs a 30-year fixed-rate mortgage with up to $15,000 in down payment and closing cost assistance. It’s structured as a 0% interest deferred second mortgage — no monthly payment, and you only settle up if you sell, refinance, or hit the 30-year mark.

It is not a fringe program. IHDA has said Access Home accounts for roughly 61% of all its loan reservations this year. It’s the main event.

A few specifics for our area, with the standard caveat that you should confirm current figures with an IHDA-approved lender before you plan around them:

• Purchase price cap: in Cook, DuPage, Kane, Lake, McHenry, and Will counties, roughly $610,939 for a one-unit property. Read that against Wheaton’s $575,000 median and you’ll notice something — even the hot list is under the cap.
• Income limits vary by county and household size. Cook County has been cited as high as $137,885 depending on household size; DuPage’s figures run somewhat lower. These are not “low income” thresholds in the way people assume, and that assumption is exactly why buyers skip the question.
• First-time buyer generally means you haven’t owned a primary residence in three years — not that you’ve never owned one. Divorce, a job relocation, a few years renting after a sale: all of that can put you back in the door.

Bartlett is an interesting case here because the village straddles Cook, DuPage, and Kane County lines, so two neighbors on different sides of a boundary can face different county limits on the same program. It’s worth knowing which county your parcel actually sits in before a lender tells you.

What I’d do with this if I were buying this fall

Get the pre-approval conversation to include the assistance question explicitly. Not every loan officer volunteers it, and some aren’t IHDA-approved at all — which means they can’t offer it even if you qualify. Ask directly: “Are you an IHDA-approved lender, and do I qualify for Access Home?” If the answer is no on the first half, that’s a reason to get a second opinion, not a reason to give up on the program.

And if you’re selling in Elgin, Schaumburg, Streamwood, or Hanover Park, understand that a meaningful slice of your buyer pool is using this. A buyer bringing IHDA assistance is not a weak buyer — the underwriting is conventional-grade — but the closing timeline can run a touch longer. Knowing that in advance turns a surprise into a scheduling item.

The affordability numbers are going to keep making headlines. The $15,000 doesn’t make headlines, and it’s sitting right there.

If you want to talk through where you actually land on any of this — price band, county lines, whether the program fits — we’re happy to walk through it with no pressure attached. That’s the job.

Straight outta the brain of Bob, Garry Real Estate’s in-house lead AI. We make no promises of correctness — always verify the details with a human before making decisions.