Chicago’s industrial market has spent two years fixated on construction pullbacks, big-box rebounds and the question of how quickly tenants will reengage. But the next cycle may hinge on something far simpler: the land that no one can build again. As developers trim pipelines and the mid-range bulk segment hollowed out entirely this year, a different corner of the market has emerged as the most strategic battleground heading into 2026. It’s not Class A warehouses or speculative megasites; it’s the infill industrial outdoor storage yards in the beltline where trucking, intermodal traffic and last-mile networks intersect.
These sites have always been operational necessities. The difference now is that they have become financial ones too. Chicago’s Q3 2025 data makes the point clearly. Construction has fallen 55 percent from its 2023 peak, leaving only 12.9 million square feet underway across a metro with more than 1.2 billion square feet of inventory. Not one square foot is under development in the 500,000 to 749,000 square foot size range — a segment that historically helped balance the region’s supply pipeline. With development hollowed out in that middle band and the remaining large-format construction tilted toward build-to-suit, the pressure on infill land has only intensified.
Nowhere is that pressure clearer than in the IOS segment. These sites were already scarce. Redevelopment, rezoning and infrastructure expansion have pushed them into near-extinction, reshaping the competitive landscape in ways that aren’t reflected in traditional vacancy or absorption data. IOS availability contracts even when the broader market appears stable. It’s a land-use story, not a leasing one.
“My view of Chicago in 2025 is largely shaped by the scarcity of highly functional, strategic real estate in core infill areas,” said Cary Goldman, founder and CEO of Timber Hill Group. “The mainstream focus on massive, speculative bulk warehouses along the outer edges of the market often overlooks the mission-critical segments closer to the urban core.”
That scarcity has only intensified as redevelopment pressure mounts. Data centers, higher-value warehouses and infrastructure projects are absorbing land that once supported IOS functions. Even as overall vacancy holds at 6.2 percent, according to Avison Young’s Q3 2025 report, the supply of IOS-compatible parcels is shrinking in ways vacancy rates cannot show. These sites don’t replenish through new construction cycles. They disappear permanently unless an operator is willing to undertake complex, occasionally contentious entitlement work.
This is exactly why Timber Hill has leaned into assets where zoning, functionality and connectivity overlap. The firm operates four IOS cross-dock terminals in Chicago and recently repositioned one following the expiration of an inherited below-market lease. The property sits six miles from the Loop at I-55 and Cicero, a location that leverages the dense interplay of interstate access and the BNSF and CSX intermodal networks. The site includes a 55-door terminal with an executive office, a free-standing 10,000-square-foot truck repair building and parking for 70 trailers and 59 tractors. Leasing has moved quickly, underscoring an infill theme that is increasingly dominating tenant behavior.
Goldman pointed to why these “messy” assets matter more in today’s network-driven environment.
“The ‘overlooked’ properties aren’t necessarily obsolete buildings; they are often the highly constrained, legally zoned parcels used for fleet management, last-mile staging, and container storage — the critical ‘parking lots’ of the supply chain that enable efficient movement of goods,” Goldman said.
Institutions have historically treated IOS as an operational afterthought. As more capital sources tune into the structural scarcity of IOS-compatible land, competition has followed. With few viable options for ground-up IOS development, acquisition and conversion strategies have become the most realistic and efficient plays. Older low-coverage buildings, once discounted, now trade at premiums because their zoning and locations can’t be replicated.
That supply-side pressure is meeting a demand profile that looks nothing like the broader industrial market. Chicago’s logistical advantages are unusually dense. Four interstates intersect here. Six Class I railroads run intermodal operations across the metro. O’Hare ranks among the top cargo airports in the country. According to the AY report’s freight movement data, roughly half of the nation’s intermodal trains pass through Chicago on any given day, and Q3 leasing activity reached 35.9 million square feet — pacing ahead of 2024’s full-year total. Those concentrations of movement are exactly what turn IOS sites from niche assets into strategic infrastructure.
“Chicago sits at the convergence of four major interstate highways (I-55, I-65, I-80 and I-90), providing direct east–west and north–south connectivity,” Goldman said. “All six U.S. Class I railroads operate intermodal facilities in the metro area, and roughly 50% of all U.S. intermodal trains — about 1,300 trains per day — move through the region. This concentration of rail infrastructure is unmatched elsewhere in the country.”
The region’s freight behavior is stabilizing too. After several years of rate volatility, trucking markets show more balanced routing, better service reliability and fewer extreme swings. That predictability gives operators the confidence to make longer-term location decisions, especially for nodes that support staging, parking and asset maintenance. With data center construction surging and manufacturing activity picking up, flatbed spot rates have shown the first sustained increase in months. Those indicators typically correlate with increased need for IOS capacity.
But the most consequential shift is likely to be psychological rather than statistical. For the first time, IOS is emerging as a primary investment category, not a residual one. The institutionalization of the asset class driven by rising rents, operational needs and persistent land scarcity is pulling new capital into a segment that once required specialist knowledge.
“The next evolution, in my view, is land scarcity,” Goldman said. “Inside the 294/290/55 beltline, the amount of industrial-zoned acreage that can support open storage, equipment yards or fleet operations is shrinking every year.”
That accelerating scarcity will define 2026 more than any movement in headline vacancy or absorption metrics. As developers stay cautious and mid-range bulk construction remains absent, the assets that depend on land rather than walls will set the tone for the region’s industrial performance. IOS may not grab headlines, but its influence runs deeper than most market indicators reveal. In a market built on movement, the most valuable assets may be the ones that never move at all.
