Warehouse capacity trends turned in 2026, after years of loose supply, and the shift is already reshaping costs for shippers.
Overview
Warehouse capacity trends shifted direction in the first half of 2026. For nearly three years, shippers held the upper hand on rates and available space. That balance is now moving back toward landlords. Vacancy is tightening in the segments that matter most, and rents are climbing for the first time since 2023. The driver is not a mystery. It is tariffs, and the scramble to get ahead of them.
Shippers grew comfortable with abundant capacity and soft pricing over the last few years. This is a meaningful inflection point. Understanding why it is happening, and how long it might last, makes the difference between locking in space at a reasonable rate this year and paying a premium for whatever is left in 2027. It is also why more shippers are re-evaluating their supply chain strategy earlier than usual.
Warehouse capacity does not tighten gradually and predictably. It tightens in bursts, often triggered by policy changes outside any single company’s control.
Why Warehouse Demand Is Rising Again
The simplest explanation is that companies are pulling inventory forward. When tariff deadlines loom, the rational move for an importer is simple. Bring in as much product as possible before a new duty takes effect, then figure out storage later. That is exactly what has been happening.
The National Retail Federation’s Global Port Tracker, produced with Hackett Associates, forecast July 2026 container volume at major U.S. ports. The projection: 2.47 million twenty-foot equivalent units, a new all-time monthly record. That tops the previous high set in May 2022, during the post-pandemic demand surge. June volume was projected at 2.33 million TEUs, up nearly 19 percent year over year.
This matters because it is not simply a strong retail season. Retailers are explicit about the reason. Jonathan Gold, NRF’s vice president for supply chain and customs policy, points to a clear driver. Retailers are rushing shipments in ahead of tariff increases expected later in the year. That is defensive, cost-avoidance behavior, not a demand signal driven by consumer spending.
Every container that lands early has to go somewhere. Most of it is going into warehouses that were not built for this kind of surge. The supply side of the market has spent several years underbuilding relative to long-term demand. That same surge is straining port drayage and inland moves. It is why many importers are leaning harder on freight brokerage partners to secure capacity out of the ports.
Peak Season Timing Compounds the Surge
Layer on top of that the ordinary seasonal pattern. Peak season imports, historically concentrated around October, have been creeping earlier for several years running. NRF has tracked this trend since the pandemic era. In 2026, back-to-school ordering and tariff timing have collapsed into the same window. That compounds the volume spike rather than spreading it out.
The result is a warehouse network absorbing a holiday season’s worth of inventory in the middle of summer. It still has to plan for the actual holiday season a few months later. These are the warehouse capacity trends shippers should track heading into the back half of the year.
What the Data Reveals About Warehouse Capacity Trends
The Logistics Managers’ Index is a monthly survey of supply chain executives run out of Colorado State University and Arizona State University. It gives the clearest read on how this is playing out operationally. The June 2026 LMI came in at 71.1, up from 69.5 in May. That is the first reading above 70 since March 2022. A reading above 70 is considered significant expansion on the index’s 0 to 100 scale.
The composition of that number is more instructive than the headline. Inventory Levels jumped from 54.8 in May to 60.5 in June. LMI researchers attributed the move largely to larger respondents and downstream retailers pulling inventory forward. That lines up directly with the port data above.
| LMI Component | Direction, June 2026 | What It Signals |
|---|---|---|
| Inventory Levels | Rising sharply (60.5) | Companies are stocking up faster than normal, largely to get ahead of tariffs |
| Warehousing Utilization | Increasing at an increasing rate | Existing space is filling up faster than it is being vacated |
| Warehousing Capacity | Contracting | Available space to lease is shrinking as inventory occupies more square footage |
| Warehousing Prices | Increasing at an increasing rate | Landlords are gaining pricing power as space tightens |
| Transportation Utilization | Increasing at an increasing rate | Carriers and fleets are running fuller, a byproduct of the same inventory surge |
Warehouse Capacity: The Component That Matters Most
Warehouse Capacity is the metric that deserves the most attention. It moved in the opposite direction of everything else. As inventory filled available square footage, capacity slid back into contraction territory. That is the clearest sign the market has flipped from a shipper-favorable environment to one where landlords are regaining leverage. It is also a strong argument for reviewing warehouse management practices before space runs out in a given market.
It is also worth noting the shape of the change within the month. LMI researchers found that growth rates accelerated from moderate expansion early in June to robust growth later in the month. The tightening was not a slow drift. It happened quickly, in a matter of weeks. That pace tends to catch shippers off guard. It does not leave much runway to renegotiate a lease or find overflow space before terms shift.
Industrial Real Estate Is Tightening
Warehouse operators and commercial real estate researchers are seeing the same story from the supply side of the ledger.
CBRE’s Q1 2026 industrial figures showed leasing activity up 14 percent year over year, reaching 249.8 million square feet. That puts the market on pace for a record year. Net absorption rebounded to 43.1 million square feet. National vacancy sat at 6.7 percent, and construction completions slowed to 55.4 million square feet, still barely keeping pace with demand.
Prologis Research, published in May 2026, projected new warehouse deliveries for the full year at roughly 190 million square feet. That would be the lowest level of new supply in a decade. It is about 20 percent below the pre-pandemic average. At the same time, Prologis expects full-year net absorption to reach close to 200 million square feet, up from 2025. For the first time since the pandemic-era construction boom ended, demand is on pace to outrun new supply.
The trend has since accelerated. JLL’s industrial market dynamics report for Q2 2026 shows leasing activity surging to 175.7 million square feet, up 49.4 percent year over year and the strongest quarter in more than three years. National vacancy compressed to 6.8 percent, the first meaningful contraction since mid-2023, and big-box leasing rose 58.3 percent year over year as occupiers prioritized power availability and automation-ready space over discounted rents.
CBRE’s Q1 reading of 6.7 percent vacancy and JLL’s Q2 reading of 6.8 percent come from different quarters and different market samples, so they should not be read as conflicting data points on the same period. Read together, they show the same trajectory: vacancy stopped rising during the first half of 2026 and started contracting.
What CBRE, Prologis, and JLL All Agree On
This combination of numbers matters more than any single data point on its own. Together, they describe a market with almost no slack left to absorb a surprise. Construction starts have been low for multiple years in a row. That means the pipeline of new space coming online in 2027 and 2028 is already constrained. If demand keeps accelerating the way port and inventory data suggest, there will be little new supply available to relieve the pressure.
Prologis itself has flagged that industry-wide utilization is running around 84 percent, still below the long-term average. Scarcity is emerging in select locations and building types, particularly large modern buildings near ports and population centers. That is the segment where PLS Logistics most often helps shippers secure warehousing and distribution capacity. It is exactly the segment tightening fastest, and it is where warehouse capacity trends are moving quickest from loose to tight.
Why Waiting Gets Expensive
Every data point above points toward the same conclusion. Shippers who wait to secure space are going to pay more for it. They may also not get the location or building type they want.
Moody’s Analytics has projected industrial rent growth of roughly 3 percent for 2026, the highest of any commercial real estate category. That follows a period of near-stagnant pricing. That is not a dramatic number in isolation. It represents a clear reversal from the flat-to-negative rent trends shippers grew accustomed to over the previous two years. CBRE’s own 2026 industrial outlook points in the same direction. It expects vacancy to stabilize as speculative construction dries up, rather than continuing to rise.
Prologis reported net effective rent change across its portfolio of 32 percent in the first quarter alone. The full-year pace is tracking toward 40 percent. Lease mark-to-market, the gap between expiring lease rates and current market rates, was estimated at 17 percent. That represents roughly 750 million dollars in future net operating income for the company. In plain terms, tenants whose leases are coming up for renewal are staring down meaningfully higher rates than what they signed years earlier.
The Real Cost of Delay
Storage costs are only part of the equation. The LMI’s Warehousing Prices component and Transportation Utilization component have been rising together. That means the same inventory surge filling up warehouses is also filling up trucks and rail cars. Higher utilization on the transportation side tends to mean fewer available appointments and longer dwell times. It also means less flexibility to reroute freight on short notice.
There is also a structural risk that gets less attention than pricing. As available square footage shrinks, especially in the largest and most modern buildings, shippers lose optionality. A company that needs to add 100,000 square feet of overflow space in a specific market may simply not find it on short notice. That is already the case once vacancy in a submarket falls into the low single digits, as it has in markets like Chicago’s O’Hare corridor and Nashville. These warehouse capacity trends make early action the safer bet.
What Shippers Should Do Now
Shippers are not powerless in this environment. The decisions made in the next two or three quarters carry more weight than they did a year ago. A few practices stand out as the most effective responses to these warehouse capacity trends.
Each of these is a hedge against the same underlying risk. The market can tighten faster than a company’s real estate decision cycle. The LMI data from June showed how quickly conditions can shift within a single month. Waiting for certainty before acting is itself a bet in this environment. It is a bet that certainty will arrive before space does.
Looking Ahead
The next few months will be a genuine test of how much further this cycle has to run. NRF’s Global Port Tracker forecasts a sharp pullback after the July peak. August imports are projected to fall 4.5 percent year over year, with September through November trending below 2025 levels. If that plays out, some of the pressure on warehouse capacity should ease heading into 2027.
What Could Change the Outlook
But a few factors argue against assuming quick relief. First, the pullback in imports assumes tariff policy holds steady. Trade policy has been anything but steady over the past two years. A new round of tariffs or an extended deadline could reset the front-loading cycle again. Second, construction completions are still running near decade lows, according to both CBRE and Prologis. Any near-term drop in demand would not be met by a corresponding wave of new supply. The market would simply return to a more balanced, still relatively tight, state rather than a loose one.
Third, peak season itself has not gone away. Whatever inventory got pulled forward into the summer still has to move through the network in the fourth quarter. Warehouse and transportation utilization are likely to stay elevated through the holidays, regardless of what happens with tariffs.
Shippers should watch the next two or three LMI releases closely, along with Prologis and CBRE’s quarterly updates, for signs of where warehouse capacity trends head next. These will show whether Warehouse Capacity stabilizes or continues contracting. A sustained reading below 50 on that component would confirm the market has moved into a genuinely tight, multi-quarter cycle. That would rule out a temporary tariff-driven spike.
The broader lesson from 2026 is one that supply chain leaders have learned before, usually the hard way. Companies that treat warehousing as a strategic, forward-looking decision come out of cycles like this with lower costs and more flexibility. Reactive companies do not. Those that wait for the data to become obvious tend to negotiate from a position of scarcity. Choice belongs to those who moved first.
Shippers looking to stress-test their own network against these conditions can start with a conversation with a PLS Logistics supply chain specialist.
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