Newsletter · · Ashutosh Agarwal

AI Borrowing Binge Pushes Mortgage Rates Higher Even as Inflation Cools - The Housing Tape - Week of July 17, 2026

Housing and mortgage-rate newsletter for the week of July 17, 2026. June inflation cooled to 3.5% yet mortgage rates climbed back above 6.6%, driven by renewed Iran tensions and a record wave of AI-company bond issuance crowding out Treasuries, while credit strain moved from forecast to fact with a multifamily fund blowup on floating-rate debt.

The Housing Tape

Week of July 17, 2026: AI Borrowing Binge Pushes Mortgage Rates Higher Even as Inflation Cools

Here's the head-scratcher of the week: the June inflation report actually looked good, and mortgage rates went up anyway, back over 6.7%. The usual suspect (oil, with the Iran ceasefire falling apart) is only half the story. The other half is something almost nobody in housing is talking about: the tidal wave of borrowing from AI companies is quietly stealing demand away from the bonds that set your mortgage rate. Let's get into it.

TL;DR

  • Rates rose on good inflation news. June headline inflation dropped to 3.5% (from 4.2%), yet the 30-year mortgage climbed back to ~6.64–6.75%. Blame renewed Iran tensions and a record flood of AI-company bonds crowding out Treasuries.
  • No crash coming for prices, but no relief either. The people who study the data say a home-price crash needs distressed sellers who simply don't exist right now, while affordability is grinding better only because wages are (barely) outrunning prices.
  • Rentals are stuck in a supply hangover. Single-family rent growth is the weakest in over a decade, and it's now cheaper to own than rent in parts of the Midwest, a genuinely rare event.

What's New This Week

1. The real reason rates went up, and it's not just oil. On the July 16 episode of BiggerPockets' On The Market, Dave Meyer walked through a genuinely under-covered driver. Everyone knows renewed fighting near the Strait of Hormuz sent oil up 10% in a single day, which pushes up inflation fears. But the second driver is new: the biggest AI companies, Microsoft, OpenAI, Anthropic and the other hyperscalers, borrowed $244 billion in the first half of 2026 alone to build data centers. That took AI from about 1% of all investment-grade corporate bonds to roughly 18%. Amazon alone issued $25 billion in July. Because there's only so much money investors will lend, that borrowing competes directly with U.S. Treasuries, and when demand for Treasuries falls, their yields rise, dragging mortgage rates up with them. In plain terms: the money being vacuumed into AI infrastructure is one reason your mortgage costs more. Meyer's blunt read: "it's probably going to stay like this for a while." (This wasn't a one-off take, on the July 10 TreppWire Podcast, Trepp's analysts flagged the same thing, citing a BMO projection that "a couple hundred billion dollars" of Big Tech issuance would sap Treasury demand.)

2. Why home prices still aren't crashing, a data-driven takedown. On HousingWire Daily (July 13), lead analyst Logan Mohtashami made the case that the crash callers keep missing three ingredients. A 2008-style price crash needs: a credit boom (impossible now thanks to post-crisis lending rules), a flood of excess inventory (active listings are ~1.56 million versus 2.5 million at the 2005 bubble peak, still below normal), and distressed sellers (homeowners underwater on their loans are just 1–2% today versus 23% in 2010). "Nominal crashes need distressed sellers. You don't have them." Home prices grew ~1.8% in the latest read while wages grew ~3.4%, which, counterintuitively, is good news, because it means affordability is slowly healing without anyone getting hurt.

3. So how high can rates go before demand breaks? On the July 16 HousingWire Daily, Mohtashami put a number on it: 6.64% is his line in the sand. Below it, buyer demand picks up; above it, demand tends to fade. His forecast of 237,000 more home sales this year assumes rates hover near 6.25%, so the recent bounce back above 6.64% matters. The encouraging part: demand has held up better than expected so far, even above that line, because affordability keeps quietly improving. The sobering part: he sees essentially no path to rates below 5.75% unless the Fed changes course, because "the Fed runs 65 to 75% of where mortgage rates go", and Chair Kevin Warsh just signaled the Fed has "zero tolerance for inflation."

4. The mortgage-bond market is calm, eerily so. On the July 17 Chrisman Commentary, Chris Maloney of Bank of Oklahoma's capital-markets desk, an operator who trades this stuff daily, gave a rare look under the hood. Mortgage bonds have quietly had a good year (up 46 basis points versus just 10 at this point last year), with volatility at its lowest since 2021. But the striking numbers are structural: roughly half of all Americans with a 30-year mortgage are locked in at 4% or below, and they're not moving. New home loans are running about 3.5 million a year versus 6 million in the late 2010s, and mortgage-industry employment is down 33% from its 2022 peak. His verdict on the broader market was unusually harsh for a bond guy: U.S. housing is "a disastrous mess... a political failure of the first magnitude," rooted in fifteen years of not building enough homes. One stat says it all: America built one single-family home per 227 people from 1960 to 2009, but only one per 390 people since.

The Debate

This week the tape leans bullish on prices, cautious on the rental side, and genuinely worried about credit, so let me steel-man each honestly.

The bull case (for-sale housing): The people closest to the data keep knocking down the crash narrative. There's no credit bubble, no inventory glut, and, crucially, no distressed sellers, which is what actually drives prices down. Affordability is slowly improving because wages are outpacing home-price growth for a second straight year. Even with rates bouncing back up, buyer demand hasn't broken. It's not a boom, but it's a floor.

The bear case (rates and the consumer): The optimists all rest on one assumption, that rates don't spike again. And the pressure is building from two directions at once: geopolitics (oil) and the AI borrowing binge, neither of which the Fed can fix, and a Fed that's leaning toward hiking, not cutting. Meanwhile the strain is showing up at the bottom. On the July 14 Julia La Roche Show, Larry McDonald pointed out that Home Depot is badly underperforming the market, with the "bottom 65% of consumers" squeezed by sticky inflation, diesel and jet fuel never came down, and gasoline is still up 52% from late last year. In the same show a few days earlier (July 11), Chris Whalen argued the market has effectively "had a rate hike already even though the Fed hasn't moved", financing costs are up, corporate-bond spreads are widening, and that historically signals a slowdown coming down the road.

The two sides aren't really in conflict, they're describing the same coin. Prices are protected by the very thing that's crushing affordability: nobody with a cheap mortgage will sell, so supply stays scarce and prices hold, while first-time buyers get frozen out.

The Names in Play

Public housing names were mostly quiet this week, builders don't report until late July, but two data points are worth flagging:

  • AvalonBay (AVB) turned up on the TreppWire Podcast (July 10) buying roughly $22 million of land in South Miami for a 251-unit development. The read: a well-capitalized apartment REIT is quietly planting seeds for the next Sun Belt upcycle even while today's rents there are soft, a classic buy-when-others-can't move.
  • Home Depot (HD) is the read-through canary. McDonald's point that it's lagging the market is the clearest sign in the podcasts this week that the lower-income consumer, the one who fixes up a house rather than buying a new one, is pulling back.

Read-Throughs

  • Building products & appliances (Carrier, Masco, Mohawk, Builders FirstSource, Sherwin-Williams): No direct commentary this week, but the signal is negative around the edges. With new-loan volume near multi-year lows and the DIY consumer stretched (per the Home Depot read), the demand backdrop for remodeling and materials stays soft.
  • Home improvement (HD, LOW, FND, TSCO): Home Depot's underperformance and the "bottom 65%" squeeze (Julia La Roche, July 14) is the most concrete negative read-through of the week.
  • Agency MBS / mortgage REITs (NLY, AGNC): Constructive, quietly. Mortgage bonds are outperforming with record-low volatility, tight spreads, and muted prepayments (Chrisman, July 17), a calm, positive-carry backdrop for levered MBS holders. The wild card is Treasury-yield volatility if the AI-bond supply wave keeps building.
  • Mortgage originators / title (RKT, UWMC, PFSI, FAF, FNF): Still grim. Refi incentive collapsed back below 8% of borrowers after rates jumped, and origination volumes are so low that mortgage employment is down a third from its peak. The refi wave everyone hoped for in January evaporated.
  • Single-family rental (INVH, AMH) & the ROAD to Housing Act: On The Rent Roll (July 16), Jay Parsons, leaning on John Burns data, made two points that cut against the headlines. First, "Wall Street landlords" are a boogeyman: institutions are just ~0.6% of home sales. Second, the new ROAD to Housing Act (now law after the President declined to sign it) brands any firm owning 350+ houses as "institutional," but Parsons, who says he actually read the bill, argues it's "not really a ban", it's compliance red tape with generous exemptions, though the fines ($1 million per house, or triple the purchase price) are no joke.
  • Land developers & build-to-rent: Capital is still flowing to attainable-housing development, but at a steep price. On PassivePockets (July 14), DLP Capital described lending to build-to-rent developers at ~12.5% rates, a reminder of how expensive construction financing has become. Their affordability stats are stark: the average first-time buyer is now 40 (it was 33 a decade ago), and the gap between a typical mortgage payment and typical rent is about $1,200 a month, near the widest ever.
  • Regional banks with housing exposure: Watch the floating-rate apartment loans. TreppWire flagged a multifamily fund losing essentially all its investor capital this week, almost entirely floating-rate debt, and predicted this kind of distress is "about to make a roaring comeback." Whalen echoed the theme: private credit and riskier lending are where the strain shows first.

What Changed From Last Week

Two things genuinely shifted. First, the driver of rates flipped. Last week the story was oil and the Fed pinning rates around 6.5–6.75%. This week we got a clearly good inflation print (headline down to 3.5%) and rates rose anyway, because of Iran re-escalating and the AI-bond crowding-out effect, which is a newer, structural pressure that won't ease on a calm CPI. Second, the credit-stress theme moved from forecast to fact. For weeks the maturity-wall and floating-rate worries were framed as coming; this week a real multifamily fund actually blew up on floating-rate debt, and multiple voices now say the distress cycle has arrived. On the for-sale side, the picture is unchanged: bifurcated, demand-starved, but structurally floored by a lack of sellers.